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YMQ - STL

Find cheap flights from Montreal to St. Louis

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Round-trip
Economy
Montreal (YMQ)
Lambert-St Louis
Tue. 30/11
Tue. 7/12
Any month
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Good to know

Low season

August

High season

September

Average price round-trip

C$ 381

Good deal round-trip

C$ 150

Good deal one-way

C$ 197
Best time to beat the crowds (26% less expensive on average)
Most popular time to fly (19% more expensive on average)
(avg. price over the last 2 weeks)
or less
or less

When to book flights from Montreal to St. Louis

Estimated round-trip price
Average price per month
Flight prices as travel date approaches

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 197 or less one-way and C$ 150 or less round-trip.
  • The cheapest flight from Montreal to St. Louis was found, on average, 53 days before departure.
  • Book at least 4 weeks before departure in order to get a below-average price.
  • High season is considered to be August, September and October. The cheapest month to fly is August.
  • On average*, there is no price difference when choosing to fly in the morning or the evening on this flight route.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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Top 3 airlines serving Montreal to Lambert-St Louis

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 30,124 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews

Cons: "Overall not bad. Food service can be better but it is due to the pandemic currently. Overall excellent flight!"

Cons: "Had no entertainment, asked the attendent, she called simebody, but it didn't help and she didn't bother to come and explain. Food was really bad, undercooked and cold."

Cons: "Delta flies a lot of the CRJ planes, even on relatively longer trips. Traveling first class, the seats are a little wider than in coach and have a little more leg room, but calling it "first class" is a bit of an exaggeration. It's more like what coach used to be before the days of the flying sardine cans."

Pros: "Great service"
Cons: "Messed up my luggage in Atlanta. Gate said baggage was going to domestic. Ended up in international terminal. Added almost an hour of back and forth between terminals."

Pros: "Good experience"
Cons: "Better snacks"

Cons: "I’m skinny and 5’2” and I felt squashed. Like I was in a dollhouse. The space is too small, it’s too uncomfortable. I couldn’t take my zip front sweater off. The seats and space are not proportional to humans."

Pros: "Not much"
Cons: "Being on time. Trapped in plane for 2 hours"

Pros: "All the attention bestowed upon me"

Pros: "We eventually got to Atlanta."
Cons: "Delta is flying a lot of commuter planes, which are pretty cramped. We usually fly first class, and the seating is essentially the same as what coach used to be. There's nothing "first class" about it. And of course, the flight was hours late."

Pros: "Crew was amazing."
Cons: "Delayed departure due to late crew arrival. Not a huge deal."

Pros: "Zee was our flight attendant and she was absolutely wonderful. Personable, attentive, and she made sure each and every person on the plane was comfortable and happy, going so far as to move solo passengers to empty rows so they could have more space. I wish she could be on every flight I take."

Pros: "I was rerouted through Detroit after it was apparent I would miss my connecting flight. The flight was good and I have no complaints."

Pros: "I did get home eventually"
Cons: "Flight was delayed. Seats are cramped."

Pros: "Flight crew was excellent. We had the emergency exit row so leg room was awesome! Kind bar and soda we good."
Cons: "Flight delay due to the older aircraft and lack of a pilot that knew how to fly it. Bathroom needed some tending to"

Pros: "Equipment felt a bit dated. No entertainment system, which was fine with me. Skipped the offered snack. Just had water. Flight was onntime."

Pros: "Take off on time, arrived early, pleasant flight attendant"
Cons: "Had to sit on tarmac after arriving early"

Pros: "On time, pleasant and friendly flight attendant, no unexpected issues or problems."
Cons: "Grumpy gate attendants at YUL! Could not hear the captain’s comments over the PA system. Shouldn’t the volume be checked every so often? We were offered only water or coffee, bad enough, then there was no milk or cream on board, so water or black coffee... not very impressive! And there was no entertainment so I’d rate that zero but the scale only goes as low as one star."

Pros: "Snack"
Cons: "I was delayed over 2 hours"

Pros: "It's a fast flight and boarding was quick."
Cons: "The terminal at LGA airlines is terrible."

Cons: "Customs never to hire more agents to work in the early mornings."

Pros: "On time, and pleasant flight. Flight attendants were first class: very competent."
Cons: "I slept all the way, so can’t say whether anything went wrong with the flight."

Pros: "Everything!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
Cons: "Nothing!!!!!!!!!11111!!!!1111111!!1!!!!!!!!!!!!!!!"

Cons: "Not much to read"

Pros: "I love the in-flight movies!"
Cons: "This wasn't pertaining to the flight or airline; but the TSA line was ridiculously slow."

Pros: "Good choice of video programs."
Cons: "The flight attendant took 25 minutes to appear, and had enough time for one round of service. First class, at least you should get two drinks. Fly basic economy, there just isn’t any reason to fly first class."

Cons: "Direct flight, on time arrival"

Pros: "i fell asleep until we arrive to STL."

Pros: "Not applied"
Cons: "Not applied"

Pros: "We got on the plane and it went to where it was supposed to go."

Pros: "Over all everything specially we got in earlier than expected"

Pros: "Crew member Lori was exceptional. Great detail to safety and customer service!"

Pros: "I got upgraded to comfort + which was great. quick flight, was even early"

Pros: "Fligth were on time"
Cons: "My flight from Montreal to Atlanta was 2:30 min Left at 6:10 arrive at 8:30 roughly Tried twice to get to my connection earlier and get 9:30 instead of 12:09 fligth to Daytona Delta was not flexible to allow me to book saying i did not have 55 min in between fligth which i had than lear n it will cost $75.00 to change the fligth - What? Very disappointed of Delta - lost 3 hrs at the airport today"

Pros: "Same as above."

Pros: "Couldn’t find a thing."
Cons: "My husband booked West Jet by phone. They spelled my name wrong on the ticket which caused hours of delays tryng to check in...ultimately leading to our missing the flight. The time spent was around 6 hours....4 of them the were on one continuous phone call where we were bumped back and forth between West Jet and Delta. The problem was never fixed and we haven’t flown home yet. We have new flights booked on Delta but only because Delta took pity....West Jet does no refunds or reticketing. If flights are missed you're out on of luck!"

Pros: "Flight was delayed by 2+ hours, Delta (running the flight for westjet) sent 1 email about the flight being delayed to 4:45 which was inconsistent with the gate signage and agent who said 3:45, flight ended up leaving at 5:45PM. No reasons were provided beyond the incoming flight from LGA hadn't come in. Why hadn't it come in? When could we expect to leave YUL? No answers."

Pros: "Delta automatically rebooked our flight due to delays. We were rebooked on Air Canada"

Cons: "Plane kinda of old. Just cookies and coffee"

Pros: "I got to destination. Baggage claim was quick."
Cons: "Flight was delayed due to waiting for a tardy flight attendant. Landing felt a little hard. No announcement about baggage carousel prior to disembarking."

Cons: "Seats are very small."

Pros: "For a short-haul flight on a small CRJ, it was the most pleasing and comfortable flight. No delays and everyone was pleasant from ground staff to flight crew."

Pros: "Great (seemed like unusually friendly and helpful) crew. Plenty of carry on baggage room."
Cons: "Seats didn't recline. Plane hot initially and couldn't be cooled down until airborne."

Pros: "Did not eat or use entertainment."

Cons: "lack of carry on luggage space. very tight. gate agents did not care about the customers. I had to stick my bag under the seat and only half would fit so my feet did not fit with my bag. it was a back pack. I do not prefer checking luggage since I've had so many bad experiences."

Pros: "Everything was smooth. Short flight, but they offered us refills on drinks, which I've never experienced before. Polite staff, great flight. Thanks!"

Pros: "Excellent flight. Nice new aircraft."

Pros: "Crew service was excellent"
Cons: "Poor leg space"

Pros: "On time, nice crew."

Pros: "Plane got to NY."
Cons: "Plane got to NY an hour late due to a maintenance issue, and we missed a connection because of it. Delta staff very unhelpful regarding connections and rebooking... we got redirected to a wall of phones to call for help."

Pros: "The flight was on time. I got lucky and was seated with extra legroom and was very very grateful. No drama - nice and easy."
Cons: "When we were checking in I wasn’t sure where to lineup to put my luggage in. The lines for the kiosks were also confusing. Some more direction that I think would be helpful at Philadelphia airport."

Pros: "Gate attendant was a superstar."
Cons: "6 hour delay due to part that St. Louis sent for - twice. Will never fly through ST Louis again on AA. Terrible Domino's pizza and water were complimentary after 4 hours delay. Returned to gate twice. 11 a.m. flight arrived at 9:30 PM ( 3 hr flight). Poor gate attendant was left to fend for herself as she was fed false and contradictory information."

Pros: "Crew was friendly and nice."

Pros: "Our flight attendant was very polite and with a great attitude."
Cons: "The pilot arrived late because he went for a Tim Horton's coffee (I know that because I was in first row and I heard the flight attendants talking about that). Then, after he finally arrived with a tray full of coffees, there was an issue with the jet's computer and had to reset it and we had to wait even more. When we finally arrived, our Gate was taken by other plane already and we had to wait (more) for the first one to be available for us. Then, when we finally got our Gate, there was another issue, now with the "finger". They weren't able to move it and connect it to the plane to get off of it. So we had to wait AGAIN. And finally as soon as we got off the plane, they were supposed to give us our carry ons on the aisle (Because it was a small plane CR700) , but again, we had to wait almost 10 minutes so that they could send the luggage... To make things worse, I had a first class ticket and I couldn't get the perks of it at the airport. Because they said I wasn't flying in an international flight. Come on?! Canada->USA->Mexico is not International??? You lost me AA."

Cons: "Seat space"

Pros: "I like nothing!!!!!"
Cons: "My flight was canceled and company didn’t give any other flight.... any compensation for it...."

Pros: "Flights were on time."
Cons: "Seats are too small."

Cons: "Delayed three hours with no communication or compensation. Poor customer service"

Pros: "Crew nice- flight smooth"
Cons: "More leg room"

Cons: "Better communication about handicap persons. I called twice and notified two people about my mom and her wheelchair but no one tells the gate to put a ramp up to the regional jet on the tarmac. Three ring circus as usual ."

Pros: "Arrived early. Friendly pilot."
Cons: "Attendant did not offer snack choice."

Pros: "Did good job"
Cons: "Bigger seats in economy"

Pros: "Great surprise at the end of a long travel day. New plane, great crew."

Pros: "Service was good"
Cons: "Nothing"

Pros: "Nothing"
Cons: "Flight was late and caused me to miss my flight to Dallas."

Pros: "Nice leg room in exit row"
Cons: "My travel companion and I encountered the most unfriendly and non respondent flight crew of all time."

Cons: "6 hour mechanical delay"

Pros: "Good smooth flight and quick"
Cons: "I left my iPad in the seat pocket and they said they didn’t find it!"

Cons: "I’m not sure how this flight was as I missed it due to a delay from YYZ to ORD"

Pros: "Left on time, service was good."

Pros: "My connecting flight from london arrived late and the crew made sure i made it onto the flight to stl even though I barely made it to the gate on time."

Pros: "Clean, Friendly flight attendant"
Cons: "I don’t understand how a brief meaning less than 30 minutes thunderstorm can cause a five hour delay. Every time I take the route from DCA to STL American is always really late"

Pros: "crew was pleasant"

Pros: "My flight was fine - I paid for a Premium Seat, which also allowed me a premium boarding position, which I highly recommend for anyone flying. The seat was comfortable, the staff was very friendly and I really liked the in-flight entertainment."
Cons: "At the DFW security post for my gate, there was NO TSA-pre. That service stops at 7pm. I would think at a major airport like DFW where American Airlines has a hub, they would make sure to staff that longer. Just getting to keep my shoes on, while having to drag all my electronics and liquids out, take my coat and belt off, etc. is not acceptable. AA should put the pressure on DFW to treat their customers better!"

Pros: "Flight was pleasant and all the crew members were courteous."

Cons: "Flight was delayed almost two hours due to crew staffing issues."

Cons: "I asked for water and juice, they just gave me juice"

Cons: "It was nice. And boarding was good too."

Pros: "This flight is the normal nonstop from Mia to StL. The seating is tight but not completely uncomfortable."
Cons: "I just had knee replacement 4 1/2 months ago. It was difficult to fully extend my leg under the seat in front of me because the space between rows has shrunk to include more seating."

Cons: "the fly got delayed for more than 3 hours."

Cons: "There was just an announcement that the refreshments will be served shortly but there were no refreshments. Take off and landing was horrible. Flight was shaking way more than usual."

Pros: "The crew was great! They did big effort to speak in Spanish! And also they are kind in every thing!"

Pros: "It was easy to travel"

Pros: "Easy and customer service at lax was awesome and very helpful!!!"
Cons: "The 45 minute bag time that's it may or may not be able to go 45 mins within boarding ."

Pros: "This was the same crew and pilot from the flight I took to LAX. His landing was so smooth, I woke up pleasantly upon landing!"

Pros: "Great staff."
Cons: "The hour delay due to maintenance and fueling."

Pros: "Why would a jet this size wobble all the way across the Atlantic! The pretzels were even stale, and they served a "pizza" that was a stale mini loaf with sauce and a little mozzarella. People were starving when breakfast was served. The thermostat fluctuated from horribly hot to freeing - for 14 hrs. The crew slammed things down on table trays, grumped, were giving harsh orders to patrons rather than gently directing them. These ladies do not enjoy their job. I am done with Delta. We were also an hour late taking off due to a door on a cargo hold not closing. I was embarrassed that our Aussie friends experienced this as their first American flight."
Cons: "Food, attitude of flight attendants, comfort of cabin. Pilot took charge of thermostat issue and kept us informed in a friendly manner regarding the status of our take off and flight progress."

Pros: "On time"
Cons: "Boarding numbers"

Pros: "My neighbor."
Cons: "We sat on the tarmac for over an hour for no apparent reason."

Cons: "I nearly missed my flight because I did not have a seat for a flight that I bought a ticket for at full price. Which, would lead one to believe that I would have a seat on said flight. However, coming to the gate an hour before boarding the personnel working gate the said he was having computer difficulties and could not get me a seat and it would be 10 min. I continued to return till boarding to find out I had no seat and I was on standby. Upon going to customer service they replied the airline oversold tickets and every airline does this as if to make this practice ok. Well being in sales myself and if I were to sell x amount of product to one customer ( or several) I better make sure I have it all there to deliver. People rely on you schedule wise. It nearly shot a meeting I had to make in the foot. Very disappointed with the airline and the way things were handled."

Pros: "Speedy boarding"
Cons: "Unmotivated crew, uncomfortable seats."

Pros: "Our flight was cancelled"
Cons: "Our flight was cancelled And rescheduled and we were not notified. We missed our flight. The next flight was the following day. We missed a day of vacation and $500 a day hotel fees. We felt we should be reimbursed for our flight but the person we talked to wasn't too helpful."

Cons: "Boarding was chaotic, with people sitting in wrong seats and walking the wrong way down the plane. Crew were not especially friendly. I know it was at the tail end of a long Sunday, but it wasn't impressive."

Pros: "Entertainment, 110 plugins for devices, internet."
Cons: "only free meal option was cinnamon cookies."

Pros: "The ginger ale."
Cons: "This was my return trip with more delays due to maintenance issues of the aircraft. 10/17/16 flight 1585 was the outgoing flight delayed five hours on my departing trip. I waited at the baggage carousel 15 minutes for my bag after over an hour delay due to switching aircrafts. With a flight arriving this late in the evening with the low volume of bags checked (due to checked luggage charges), this should not be the case. Five minutes to gulp down ginger ale."

Pros: "All flights were on time Greatly enjoyed the trip"

Pros: "On time, arrived early."
Cons: "Seats too close in front of you."

Pros: "Flight was on time. Plane was clean. Staff very professional."

Cons: "Attempted to make my connection which was in another terminal. Could not get onboard as they shut the doors. My rerouted flight was in a different terminal. Overall a very disappointing travel experience."

Pros: "It took off on time and life was good."

"Awful and terrible flight attendants with very poor skills and service and no empathy for the passengers"

Cons: "Late crew caused delays"

Pros: "On time/early."
Cons: "Menu items in Polaris."

Pros: "The flight was easy and quick. These small planes are actually pretty comfortable."
Cons: "Waiting for a gate in Chicago is never fun. Most people on the plane seemed to have tight connections, and I'm guessing most of us missed them. I only made mine because the next flight was delayed."

Pros: "Smooth flight"

Pros: "Good crew."
Cons: "Puddle jumper so very basic n"

Cons: "Rough landing in Washington, smell of kerosene in Sao Paulo flight, otherwise good."

Pros: "Good"
Cons: "Good"

Pros: "..."
Cons: "All of my fligts has been delayed and resceduled, so instead of 18 hours to go to hawaii, it took me 36h"

Pros: "Good communication from crew concerning updates and ETAs."
Cons: "Service was a bit brusque at times, but never unkind."

Cons: "I made a reservation for my whole family and selected seats four month ahead (we reserved 1A, 1B, 1C, and 1D). One day before the departure, United informed me that one of my kid had to be moved to 11B a part from the rest of family due to a flight swap. When we started boarding, I noted someone else was sitting on my seat (1D) with his own boarding pass with 1D written. United crew politely asked if the gentlemen was willing to move to 6B, which his original seating in the system but he refused to do so. We' also personally explained to him that if he can yield the seat so that our family could sit together due to my wife's medical condition but he would not cooperate. I noted Those gentlemen on 1D and 1C are either buddies or coworkers. The crews were looking at each other without offering a solution. I ended up telling the crew that I could sit on 6B so that the plane can leave. The departure time was 20 min late u related my seating issue and de-icing took another 40 min. I am a Global Service member and I am very unhappy about the way the whole situation was created and handled by United."

Pros: "The flight departed early and arrived early, good flight attendant service"
Cons: "Long wait on the cold jetbridge for our carryon baggage, tight quarters on the plane"

Pros: "I had absolutely no complaints about this trip"

Cons: "Electrical service was spotty"

Cons: "Luggage took >1hr. Flew w Copa - always got bad seats when on United flights"

Pros: "Flight attendant was friendly and plane ride was smooth."
Cons: "Flight got delayed twice (3+hours total) then we had to wait another 40 minutes for the plane to get there, deplane, and get cleaned up and restocked."

Pros: "The flight crew was courteous and efficient."
Cons: "The boarding time lasted an hour as the front desk staff at the gate insisted that I needed a visa travel document for my connection in China (multiple leg journey). What they failed to realize is that nobody needs a visa for China if they’re connecting in transit. It took a phone call and 3 staff members to sort things out. Not something that I want to deal with at 5:00 am. Moreover, due to the de icing, the flight was late and i just made it to my connecting flight in Newark. It was quite a hair-raising experience overall."

Cons: "flight was over two hours late because of a late incoming plane. That may be for good reason, but we weren't told until less than one hour before takeoff. It doesn't make sense that the airline just found out one hour before takeoff that the flight was two hours behind. We should have been told sooner about the delay, while we had other choices of alternate flights."

Cons: "This plane was awful. I don't know how anyone who is not miniature sized could be comfortable on this plane. I am 6' 1" and ~ 200 lbs, not huge by any means, but not tiny. I legitimately could not stand up (so I had to sort of slouch walk down the aisle to find my seat at the back of the plane), then the seats themselves were so narrow that I ached terribly when seated in any position for more than acouple of minutes."

Pros: "On time"

Pros: "Seats were very roomy and pilot did a great job!. Boarding went great!"
Cons: "We were stuck on tarmac but this was weather related. No gluten free snacks. Some crew was nice others less so."

Pros: "Crew was nice"
Cons: "Flight was 4 hours late. The seat was so small, I could not open the tablet (folding tablet in armrest). I am 6" tall and medium built. That tablet can only fit a kid"

Pros: "Flight was ok"
Cons: "It was late"

Pros: "Nothing to like when an agent tells you that 8 seats open on plane .but already full!"
Cons: "See above!"

Cons: "Flight was 3 1/2 hours delayed. Missed my original connection. Missed the second connection because (as the attendants told us) they were unable to get ANY flight information to inform the passengers of where their connecting flight was. They were also pretty snotty and acted like it was our fault that we might miss a flight. I'm now sitting in Houston for the final flight of the day."

Pros: "Ease of checking in by phone & printing out board passes."
Cons: "That the ride was so rough. Pilot apologized & said it was just a bad nite. It was a smaller plane so that maybe made the turbulence feel worse too."

Pros: "We got my wife on a plane home in under four hours."
Cons: "United decided to bump some of their glorified bus drivers ahead of me on standby so I had to wait a full four hours in O'Hare listening to some doichebag from LA try to entertain folks at the Goose Island bar with his stories about selling franchises."

Pros: "Great crew"
Cons: "No room on board for carry on luggage and when gate checking luggage it resulted in further delaying me to make my connecting flight"

Cons: "It's 2.5 hours past our scheduled departure time and we're still sitting at the gate"

Pros: "Still not in stl"
Cons: "Still not in stl"

Pros: "United really could have done better informing us of delay, then cancellation. I knew it was likely to be delayed due to weather, and kept checking the status. It wasn't listed as delayed until nearly boarding time, although it seems pretty clear they knew well before that. But SFO was a star. The new decor is sophisticated and comfortable. Bathrooms were like at a swanky night club! Comfy chairs and charging outlets every where. The biggest hit was the Exploratorium installation, which kept my and plenty of other kids entertained!"
Cons: "Wayfinding signage from BART is confusing. BART connection is a pain. The machines in the station only take $1 and $5 bills-- no 20s or credit cards! And no one at BART cares if you are running late for a flight."

Cons: "I was put on an Air Canada flight and sat on the tarmac for almost THREE hours in MTL. Finally took off and am stuck in Toronto overnight. Air Canada was very unhelpful. I have to sleep in the airport. No food vouchers. Sucks."

Pros: "The plane was unboarded due to mechanical problem but a new plane was found and within an hour we were back on board. Appreciate the quick turnaround."

Cons: "Girl at gate was rude!!! After missing connecting because of Uniteds negligence, my brand new luggage first time used, zipper to main compartment was ripped half way out!! My clothes and stuff hanging out as its coming out baggage claim!!!!!! This was a nightmare"

Pros: "Flight attendants tried.. United booked a hotel room for the night."
Cons: "Poor communication on gate change. Delay on flight boarding, and there were issues with engine. Stuck on the tarmac with no AC, they had us off-boarded since everyone was sweating. Reboarded after, no AC still until takeoff. Delayed more than two hours- this was last flight, and caused me to miss connection flight. Was supposed to arrive in final destination at 11pm that night- ended up getting there at 9:40AM next day."

Pros: "Bad good, good service but 5 hours delay"
Cons: "The airplane food and the delay in Chicago"

Cons: "STINGY DRINK SERVINGS TINY SNACK BAGS"

Pros: "Can't really remember if I liked anything."
Cons: "Unfriendly crew. Flight delayed by more then 2 hours. We were moved from gate to gate 2-3 times. Totally disorganized."

Cons: "Delay caused us to miss last flight of day. We have been sleeping on floor of airport for 9 hours. Same thing happened in the beginning of the trip from dallas to chicago. Oh, it was our honeymoon!"

Pros: "Leg room in seats better than on some airlines. Staff friendly."
Cons: "Both flights were delayed. One hour going and two hours on return."

Cons: "Our flight got canceled due to airport issues at our destination. United canceled the flight but had no alternative flights to get us home. Flights the next day were full. Took over an hour with the service desk to reroute tickets to cancel them and to get bags back then took two hours at baggage claim to get the bags back. Customer service was basically useless. After all that, we didn't get any of our money back! I will be avoiding United airlines. Flight cancelation was not their fault but the way they handled the rest of it was embarrassing."

Pros: "Never on Air Canada again. Food was miserable. They literally told me that they ran out of food (on the flight from Montreal to Casablanca). No kidding. They told us that the flight was full and no more food was available! When we asked for water, they did not bring water. I am not sure if they were out of water because the flight was full! That would be something! Bathrooms were not usable. Utterly dirty. My six-year old daughter refused to use the bathrooms. Water was flowing and the smell was horrible. They should clean that. I can go on but what is the point???"
Cons: "The list would be too long. So, what did I like is a better question in this case. Honestly, I am not even sure if I liked anything. I mean some people were nice, but why? Do I expect people to be rude? I mean, I need to like something extraordinary, something that others don't do. I can't remember anything remarkable. Just nothing."

Pros: "The young lady who was the flight attendant was very nice and tried to make a very bad situation somewhat bearable. There were a number of children on the flight that she was very attentive to. I hope united treats their employees better than they treat their passengers."
Cons: "The flight was delayed for 4 hours. We were told to proceed to the United terminal in spite of the delay. There seemed to be no effort to inform or assist us. There was very little to do in this terminal but wait to see if our flight would eventually come. There were other United passengers in the terminal who were also waiting for overly delayed flights. eventually, we had a plane that was extremely small, cramped and uncomfortable. United seems to consistently oversell its seats and then tried to get people to give up their seats. Very poorly managed airline with bad customer service. Sadly, I have to say that I have never had an acceptable experience on a united flight. Will NOT take another United flight."

Pros: "Same as above. Did notice the woman staffing the counter at boarding having extreme patience with people's problems and non problems. She was great and deserves a raise. Denver gate B 85 between 1:00 and 3:00 6/15/16."

Pros: "I liked that they waited for me because my flight was late getting in to San Francisco."

Pros: "Nothing"
Cons: "The service. The flight attendants were rude"

Pros: "No much"
Cons: "Take forever to load. No entertainment. Hard, uncomfortable seats, no food. Kept talking about "premiere plus" benefits. Why does it cost $80 to have not bad service?"

Pros: "flight was on time"
Cons: "airport gate lady would't let me run to the bathroom and quickly return for my checked carry-on for "security reasons." Then I heard about 4-5 people being paged to come pick up their checked carry-on luggage."

Cons: "lost our bag, crying babies, uncomfortable plane"

Pros: "The flight was very pleasurable. Smooth takeoff."

Read more about Delta
COVID-19 information

Safety measures for airlines flying from Montreal to St. Louis

Airlines flying from Montreal to St. Louis have enacted additional safety measures and adjusted policies to better accommodate travellers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Montreal to St. Louis

Mandatory masks

Masks required on board, masks provided on flights from Montreal to St. Louis

Social distancing seating

Middle seats unavailable to book on flights from Montreal to St. Louis

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Montreal to St. Louis

Book cheap flights from Montreal to St. Louis

Recent round-trip flight deals

27/12
Mon.
1 stop
American Airlines
19h 05m
YUL - STL
3/1
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18h 00m
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1/1
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Multiple Airlines
8h 44m
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31/12
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7h 47m
YUL - STL
4/1
Tue.
2 stops
Delta
9h 31m
STL - YUL
22/12
Wed.
1 stop
American Airlines
7h 12m
YUL - STL
5/1
Wed.
1 stop
American Airlines
14h 09m
STL - YUL
30/12
Thu.
1 stop
Multiple Airlines
15h 40m
YUL - STL
5/1
Wed.
1 stop
Multiple Airlines
20h 07m
STL - YUL
22/12
Wed.
1 stop
American Airlines
7h 12m
YUL - STL
5/1
Wed.
1 stop
American Airlines
14h 09m
STL - YUL
31/12
Fri.
1 stop
Multiple Airlines
7h 47m
YUL - STL
5/1
Wed.
1 stop
Multiple Airlines
18h 07m
STL - YUL
22/12
Wed.
1 stop
American Airlines
13h 36m
YUL - STL
5/1
Wed.
2 stops
American Airlines
14h 26m
STL - YUL
30/12
Thu.
1 stop
Multiple Airlines
10h 05m
YUL - STL
5/1
Wed.
3 stops
Multiple Airlines
20h 24m
STL - YUL
30/12
Thu.
1 stop
American Airlines
8h 27m
YUL - STL
4/1
Tue.
1 stop
American Airlines
14h 09m
STL - YUL
30/12
Thu.
1 stop
Multiple Airlines
8h 42m
YUL - STL
7/1
Fri.
1 stop
Multiple Airlines
7h 02m
STL - YUL
1/1
Sat.
1 stop
Multiple Airlines
8h 44m
YUL - STL
5/1
Wed.
3 stops
Multiple Airlines
19h 06m
STL - YUL
30/12
Thu.
1 stop
American Airlines
8h 27m
YUL - STL
6/1
Thu.
1 stop
American Airlines
4h 45m
STL - YUL
31/12
Fri.
2 stops
Multiple Airlines
16h 27m
YUL - STL
5/1
Wed.
1 stop
Multiple Airlines
20h 07m
STL - YUL
1/1
Sat.
1 stop
American Airlines
13h 36m
YUL - STL
5/1
Wed.
1 stop
American Airlines
14h 09m
STL - YUL
30/12
Thu.
1 stop
Multiple Airlines
15h 40m
YUL - STL
5/1
Wed.
2 stops
Multiple Airlines
16h 46m
STL - YUL
22/12
Wed.
2 stops
American Airlines
23h 59m
YUL - STL
5/1
Wed.
2 stops
American Airlines
27h 08m
STL - YUL
31/12
Fri.
1 stop
Multiple Airlines
9h 31m
YUL - STL
5/1
Wed.
3 stops
Multiple Airlines
20h 24m
STL - YUL
31/12
Fri.
1 stop
American Airlines
13h 36m
YUL - STL
4/1
Tue.
1 stop
American Airlines
14h 09m
STL - YUL
31/12
Fri.
1 stop
Multiple Airlines
7h 47m
YUL - STL
6/1
Thu.
2 stops
Multiple Airlines
16h 46m
STL - YUL
Show more results

Recent one-way flight deals

23/12
Thu.
1 stop
Multiple Airlines
14h 03m
YUL - STL
26/12
Sun.
1 stop
American Airlines
13h 36m
YUL - STL
9/12
Thu.
2 stops
Delta
9h 38m
YUL - STL
23/12
Thu.
1 stop
Multiple Airlines
14h 03m
YUL - STL
26/12
Sun.
2 stops
United Airlines
12h 22m
YUL - STL
9/12
Thu.
1 stop
Multiple Airlines
25h 51m
YUL - STL
26/12
Sun.
1 stop
American Airlines
13h 36m
YUL - STL
27/12
Mon.
1 stop
American Airlines
19h 05m
YUL - STL
9/12
Thu.
3 stops
Multiple Airlines
14h 24m
YUL - STL
27/12
Mon.
2 stops
American Airlines
17h 42m
YUL - STL
23/12
Thu.
2 stops
Multiple Airlines
41h 28m
YUL - STL
26/12
Sun.
2 stops
Multiple Airlines
55h 48m
YUL - STL
26/12
Sun.
3 stops
Multiple Airlines
35h 25m
YUL - STL
27/12
Mon.
3 stops
Multiple Airlines
51h 00m
YUL - STL
23/12
Thu.
2 stops
Multiple Airlines
24h 57m
YUL - STL
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