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STL - YUL

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Round-trip
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St. Louis (STL)
Montreal Pierre Elliott Trudeau Intl
Fri. 30/7
Fri. 6/8
Any month
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Good to know

Low season

FebruaryBest time to beat the crowds (38% less expensive on average)

High season

AugustMost popular time to fly (33% more expensive on average)

Average price round-trip

C$ 329(avg. price over the last 2 weeks)

Good deal round-trip

C$ 196or less

When to book flights from St. Louis to Montreal

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$ 196 or less round-trip.
  • The cheapest flight from St. Louis to Montreal was found, on average, 30 days before departure.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be July, August and September. The cheapest month to fly is February.
  • Morning departure is around 22% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking St. Louis to Montreal flights

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How long does a flight from St. Louis to Montreal take?

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Top 4 airlines serving Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 29,577 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews

Pros: "The crew was nice"

Pros: "Nothing, the flight was canceled without a refund. I highly recommend canceling all business with kiwi in the future."
Cons: "My flight could have occurred or I could have been refunded."

Pros: "Being on time with everything."
Cons: "Nothing"

Pros: "quick easy flight"
Cons: "sockets to charge electronics"

Cons: "Really felt happy on time touch down nice journey with delta"

Pros: "Friendly crew"

Cons: "being on time"

Pros: "we could not get a seat until we arrived at the airport."

Pros: "This is a delayed flight after having my flight to the previous night delayed to the extent that I could not take it and make my connecting flight out of Minneapolis."
Cons: "This is a delayed flight after having my flight to the previous night delayed to the extent that I could not take it and make my connecting flight out of Minneapolis."

Pros: "N/A"
Cons: "N/A"

Cons: "Food. Phone charging at seat, entertainment screen."

Pros: "The crew was amazing! The seat was comfortable."
Cons: "Used the self check in kiosk to begin! That was awesome! But after that I still had to stand in line to check in my bags. That part of the process took a bit longer than expected."

Pros: "Nothing special"
Cons: "That was the most uncomfortable and cramped seat I had ever had on a plane flight. Even sitting on the pillow did not help."

Cons: "Slow WiFi"

Pros: "I like that I arrived at my destination safely."
Cons: "My allergies were bothering me due to the airlines allowing animals to travel as passengers, in this case a rabbit. I am very allergic to animals. My breathing was compromised."

Pros: "I had a very comfortable seat, it was a very good experience overall."
Cons: "Unfortunately had flights delayed which forced me to arrive home much later than originally planned."

Pros: "This had one of the best attendants I have encountered. She was extra friendly and made us feel good."

Cons: "The flight was 2 hours delayed.. this cause a lot of inconvienece.."

Pros: "Everything was on time and efficient. I also liked that the captain came on and updated us on arrival, turbulence, weather, etc."

Cons: "Flight was delayed out of St. Louis causing several of us to miss our connecting flight from Salt Lake City to Portland. Delta was of very little help in assisting us in making a connecting flight. They could have at least helped with travel arrangements and provided us with a little food, a pillow and a blanket as we waited in their terminal for the next flight on their airline which was a several hour wait. I understand these things happen but the passengers didn't cause the problem and Delta needs to take care of people better if they expect to earn repeat business."

Pros: "On time"

Pros: "The flight was fine"
Cons: "Delta does not transfer your luggage in Canada even if they say they do. It will not make it to your final destination"

Cons: "Ac not working at last 30 minutes of flight."

Cons: "The flight attendants weee rude, and no bar service"

Pros: "Nothing"
Cons: "We lost our whole vacation and had to pay for the plans fare twice because My last name was spelled wrong on our tickets and we were unable to use them because my passport didn’t match the name on the ticket. We had to rebook everything pay almost twice as much for the plane fare, our Lodi g cost more and our trip was delayed for two weeks. Vyama is blaming us for spelling our name wrong and claimes that it’s our fault this happened because everything is automated. There saying they don’t touch anything that we enter into the booking but somehow everything they claim we entered is now in all capital letters and the space between our first name and middle name is now gone and all run together. The coustomer service number gets you to someone in India. I have tried to get this addressed four times now at first they tried to place the responsibility on the airlines now us and they have hung up on me twice. Kayak has been worthless, they also just pass the responsibility on to someone else. We will never use them again ant I intend to make sure that this mess is put out in social media to hopefully keep others from having their travel plans ruined by their flawed system."

Cons: "They changed my flight to a different one departing 2 hours earlier and did not notify me! The original flight was still available & they would not let me take it despite my reservation paper work. CRAZY! I have a two hour drive to the airport this gave me the option to leave home at 2:30am or go the night before and pay for a hotel. Flight was managed by DELTA who also did not care! All involved blamed each other. Beware"

Pros: "After flight was cancelled, rebooking was easy and quick on the app."
Cons: "Flight was cancelled. flight attendants were grumpy. One of the tightest seats I've flown in economy. No room in overheads so I had to stuff my winter coat between my legs with my backpack under the seat in front of me. Was basically wedged into the seat with my stuff."

Pros: "it was easy to navigate ."

Cons: "The flight left three hours late while the crew was waiting for an oxygen tank to arrive. We were boarded onto the plane after it was nearly an hour and a half late, then waited in out cramped seats for another hour and a half as we continued to wait for the same piece of equipment. At one point a Delta employee announced over the plane's PA system that we'd be getting vouchers to compensate us for this absurd delay, but there was no explanation of how to claim those vouchers."

Pros: "In flight movies"
Cons: "The flight was 3 hours late taking off which made us miss our connection to chicago so we are stuck in Atlanta tonight with unplanned expenses we were not planning on!"

Cons: "I was seated in first class, and due to some catering mix-up, no meal was served. I was given a banana and crackers which was very disappointing since I hadn't eaten in 8 hours and was starving. No on board entertainment whatsoever."

Pros: "Very friendly crew"
Cons: "Seatbelts very short given ample seat size"

Pros: "Everything from the check-in to the landing was great. We were well informed about what was going on with out luggage (we were on a regional flight) and the assortment of free snacks were superb! I guess I'll be a returning customer"
Cons: "I was expecting some form of entertainment (radio, overhead monitor, etc) on the CRJ700. But it really don't take away from the experience since T-Mobile partnered with the Wi-Fi service and I received a free hour of Wi-Fi!"

Cons: "Very uncomfortable seats Oddly shaped overhead bins, unable to put standard sized bags overhead, meanwhile they fit in planes of other major airline companies such as American Airlines. No food options, only sweet biscuit which contains soy and milk."

Cons: "The flight was delay for 3 hours and they only give us chips and water. They didn't explain well what was the problem. The plane was dirty inside and the seats werent comfortable at all, the plane was making weird noises. There is no window in the 11A Window Seat. Really really bad service at all."

Pros: "Plane was clean, attendants were friendly, and food was fine."
Cons: "I had a flight from Detroit to Montreal. Tried to check in and DTW was not a choice on the westjet website and so I physically could not check in. I realized the flight was technically operated not by WestJet, but Gojet. Went to Gojet's website and was told that Delta took care of all of their ticketing and such. Went to Delta's website, entered my ticket number and card number but I was not in the system as I was given all WestJet info (not Delta's). Luckily the baggage check in people figured it all out."

Pros: "Clean plan and efficient boarding procedure."
Cons: "Horrible delay. Took off almost two hours post originally scheduled time."

Cons: "My flight got to New York so late!!!! I missed my international flight."

Cons: "Not great communication from gate or staff on board. Failed to provide adequate water. No ice on super warm flight. Just bad experience overall."

Pros: "Spacious, clean, great host and hostesses. The flight arrived at our destination 30 minutes early."
Cons: "Nothing."

Pros: "Newer plane! Comfortable"
Cons: "Nothing just great"

Cons: "Almost everything"

Cons: "Not enough water on the flight and we landed in a parking lot and shuttled back to the airport."

Pros: "Friendly service. On-time."
Cons: "No tv's in airplane."

Cons: "turbulance"

Pros: "I was cleared for standby! Flight attendant at the stl gate is always friendly and willing to help! I love her!"
Cons: "I waited almost 6 hours on the phone the night before the flight to get on standby! Almost didn't get the flight! Was charged $50 only to not get on my next flight because it was over booked! Flight attendant was very rude!"

Pros: "Flight was short."
Cons: "Travel to Canada from the US is generally an unpleasant experience, probably because there are not many travelers. Not many connecting flights and long layovers. Plane is small, no exntertainment, no food, few beverage options."

Pros: "I liked that I was able to get able to get an earlier flight!"
Cons: "I don't like that I had to pay $50 extra dollars for standby on both legs of my flight! I am a very loyal delta customer and these past times flying I feel like my favorite airline is turning into the bad airlines delay everytime, problems with the plane fare prices too high! I'm starting to think about taking my business elsewhere!"

Pros: "10 minutes early departure"
Cons: "There isn't enough seats in the gate area and sitting on the runway for 10 extra minutes we could have been early"

Cons: "the 2 stewardesses disappeared as soon as the flight was in the air. i upgraded to business class in what was a huge waste of money. the fact that they do not make alcohol available in business class is pure laziness, and these people are loving it. keep in mind that you can have water juice and pop. i was given the water i asked for after take off, and then she promptly disappeared for the entire 3 hours. she only returned when i pushed the call button. not good."

Pros: "Crew was great."
Cons: "Airplane didn't have any AC and was very old and dirty."

Pros: "Nothing"
Cons: "Handicap issues. We were exiting on the tarmac in Charlotte- all crew left us on the plane waiting for assistance to get off. Finally when someone showed they would not come up the ramo to get my Mom. I backed her down myself while 5 bewildered airport workers looked confused."

Cons: "2 hour delays on both flights of a round trip"

Cons: "you didn't respond and we were unable to take the flight."

Pros: "Easy boarding, flight on time, friendly creew"
Cons: "old plane with seat not confortable for a 3h flight"

Pros: "On time. Friendly and attentive staff."

Pros: "One flight attendant was very nice and petsonable."
Cons: "Already checked in and then flight canceled 10 hours before departure. Paid for preferred seating but rebooked on smaller aircraft full and had to sit in last row. Not happy and arrived 2 hours latet than original flight. Tried to explain this at gate to American employee but she told me to sit down until name was called. Probably could have had better seats earlier if she could have listened to my issue but she wouldn't listen to me. Didn't even have the chance to tell her what had happened."

Pros: "They got me there on time"
Cons: "Long delay getting off STL-CLT. Made it to gate for CLT-ROC. Then, crew delay. The usual crammed interior, cheap snacks, feeling about like a public bus"

Pros: "A cheap option to upgrade to 1st was offered that ended up being a net 0 cost upgrade for me so I took it. Comfortable on an old (but oh so nice) aircraft."
Cons: "Arrived 30 minutes early to the airport but then had to sit at a remote pad so that we ended up being 5 minutes late to the gate. A short transfer was made even more difficult, and a massive waste if time and fuel sitting and waiting. Figure out your gates early and better, and move around if needed. At the very least, bring up some stairs and buses to get passengers to the terminal and then tow the aircraft in when you have a gate available."

Pros: "Great seats in first class"
Cons: "N/a"

Pros: "Room between rows Entertainment from St Louis to Phoenix"

Cons: "Flight was cancelled with no compensation"

Pros: "Fast"

Pros: "The crew was great"
Cons: "The seats were not comfortable and boarding was a pain. Not sure why you wouldn’t want to board from the back to front. Weather grounded us at our loading airport so we were stuck with the option of staying the flight or going in the lobby."

Pros: "Smooth boarding. On time flight"
Cons: "No gluten free snacks:("

Pros: "Everything went smoothly."

Pros: "Crew was friendly- organized everything well as far as getting everyone seated quickly and handing out refreshments"
Cons: "Very little leg room for anyone over five feet six inches! Happy to be 5’2” for a change!"

Pros: "We got upgraded...Happy New Year to us!!! Service was excellent...landing was one of the smoothest we have ever had! Nice quiet flight with not too many people on board! I will use American Airlines again!"

Pros: "nice people taking care of us during the flight"
Cons: "in Miami, had to change gate 2 times, from D38 to E9,than to D7."

Cons: "It was advertised that one can see entertainment through WIFi, but from my iPad, i can't connect to this WiFi. I tried several times until I just gave up."

Pros: "Quick boarding, on time departure and early arrival. No waiting for a gate at LGA upon arrival - excellent."

Pros: "To be fair. The flight is only 50 minutes. By th time you get a drink it's time to land. It is completely unfair to the staff to have to do that. A flight like that. Have a box with a snack and some coolers that have 5 different beverages. I wouldn't even sell booze. I person can hold out for a flight that shot to get one on the connection or in the terminal."
Cons: "It's always a cramped flight. Nothing to be done except use a bigger, more spacious plane. The good thing is it's the fastest way to get to Chicago from where I lived it would take 6hrs by car."

Pros: "Spacious seats"

Pros: "Mostly friendly staff and quick flight time."
Cons: "Only half the plane got snacks and drinks. Additionally, I was forced to check my bag, which is a pretty big deal because I was connecting to an international flight and was unable to retrieve my prescriptions in all the rush to check my bag."

Pros: "Everything was on time!"

Cons: "The video monitor for my seat was broken. So, low entertainment score."

Pros: "everything was on tyime"

Pros: "On time take off"

Pros: "A nonstop flight, with a friendly efficient crew, met my expectations. A crew member went above and beyond when I asked for a coffee stirrer with my coke and ice."
Cons: "I've been spoiled by another airline's access to screens on the back of the headrest. I have my own hand held devices to entertain myself instead."

Cons: "Flight was late, got a message from Kayak that it was delayed 3 hours...thank goodness I happened to check again, because then it was only delayed for 41 mins, then it gave me an update that it was only 21 mins delayed, then went back to 41! Pretty inconvenient, and it would have been nice to get a text, not just some silent pop up"

Pros: "Got to La Guardia almost 26 minutes early but then waited FORTY minutes for the gate!"
Cons: "AA needs better coordination with the horrible La Guardia airport"

Cons: "Delayed a total of four hous!"

Cons: "good"

Pros: "Smooth - trouble free - calm process"

Pros: "On time arrival"
Cons: "Everything else"

Pros: "Nothing"
Cons: "The storage are very small, by the time i boarded everything was full. I had to hand carry bags and i had to put it in front of me which is a very small space already, on top of that i had the window sit so i had no space to move. it was very uncomfortable, and flight was delayed. We sat there for an hour before taking off but i understand its due to the weather but it was my worst plane ride not worth 300dollars. I will not ride american airline again."

Cons: "Everything was great."

Cons: "Only suggestion would be to make the connection process a little easier. If the passenger doesn't speak English, the fact you need to print the international ticket in Miami, then re-enter at checkpoint might create confusion."

Pros: "Boarding was good, Good flight , good service , plane was small for the distance with limited space for movement ,"

Cons: "Got to charlotte with 80 minutes to connect. Sat on the tarmac for 60 waiting for a gate. Missed connection by <5 minutes. Thanks, AA!"

Pros: "Non stop"
Cons: "Airline"

Cons: "Boarding took forever, the flight was over 2 hours late which caused me to miss my connecting flight and my military orders were not honored - I still had to pay extra to take all my gear back to my duty station. Never had that issue with any other American airline."

Cons: "No food or beverages for me. I slept comfortably on my flight"

Pros: "You provide me with the best ticket prices and to me that was the the most important part of of the trip thx"
Cons: "The airlines charging for your luggage"

Pros: "Plenty of leg room no entertainment so I dozed."
Cons: "People stuffing oversized bags in overhead."

Pros: "The movies"
Cons: "No Food"

Cons: "We were delayed for 4 hours, due to a mechanical issue. We were not given any forms of reimbursement. I would like a 500.00 voucher."

Cons: "Flight was delayed."

Cons: "Would be nice to know ahead of time if flight is equipped with an in seat television so as to be prepared to bring headphones."

Cons: "Timeliness"

Pros: "The boarding was smooth and quick, flight arrived early. Service onboard was very good"

Pros: "We were boarding with one person in a wheelchair. They were extremely helpful and understanding."
Cons: "All was perfect"

Pros: "nothing"
Cons: "air canadas service, they should reimburse my accomodation expenses because of their poor time management."

Pros: "yes"
Cons: "meal"

Pros: "Boarding was good and fast"
Cons: "The audio jack was not good thus I had to keep it steady with my hand to be able to listen to movie"

Cons: "Improve seat comfort"

Pros: "Seats and plane condition"

Cons: "5h travel at noon, no meal, this is a bit cheap."

Cons: "They feel like seats for budget flights."

Pros: "Extremely helpful and accommodating! Thanks to all!"

Pros: "Everything"
Cons: "Nothing"

Pros: "Delays"
Cons: "Delays"

Cons: "See above."

Pros: "Lost bag"

Pros: "It was on time and they served drinks."

Cons: "Confort de merde"

Cons: "movie selection is poor and using your own device isnt that enjoyable. Girl at counter was demeaning."

Pros: "Good service"

Pros: "Nothing"
Cons: "Everything"

Pros: "Ok so I download the app and horrible content. Not alot of options and then you have to rent an iPad? They should b giving.those.out free"

Pros: "Everyone was very pleasurable"

Pros: "Able to upgrade to 1st class"
Cons: "Customs what a cluster of confusion"

Cons: "Always delayed."

Pros: "Good selection of TV and film's"

Cons: "It was cancelled."

Pros: "Nothing"
Cons: "AC Ticket attendants were unbelievably rude."

Cons: "Splitting couples in different seats. The only way to seat together was to pay extra."

Pros: "The tv for each individual person"
Cons: "Always late."

Pros: "Nothing"
Cons: "Air Canada was a horrible experience from beginning to end"

Cons: "Not offered earphones"

Pros: "on time"

Cons: "There was no working charge for electronics."

Pros: "Comfortable plane!"

Pros: "I paid 10.00 for nuts... that is nuts!"

Cons: "The waiting room in Boston was awful and behind security, hot, small crowded. Delayed"

Pros: "I liked the comfort and the service"
Cons: "the long delay in Montreal"

Pros: "Excellent service as always !"

Pros: "Movies were good. Landing was good."
Cons: "Ventilation was not great. And the Wrap was awful."

Cons: "Very uncomfortable seats."

Cons: "Deplaning and entering the terminal was delayed substantially."

Pros: "Never flown "air canada", was a bit apprehensive. But I was very much happy & pleasantly surprised!"

Pros: "I got to Montreal"

Pros: "All"
Cons: "Nothing"

Cons: "Long time till take off."

Cons: "Was a bit of a pain when I wanted to simply get off the plane in Geneva since it would be shorter, but then the plane was late, but that can't be helped"

Pros: "Left on time"
Cons: "Trouble at gate landing. Took a long time to off load"

Pros: "A Nice airport"
Cons: "The film are very on The iPad"

Pros: "Every thing"

Pros: "nothing"
Cons: "over 1 hour to check-in? what is the point of printing our boarding passes in advance? poor planning to have 2 flights checked in at the same time"

Cons: "The internet connection was terrible i was not able to see anything that was being offered"

Cons: "I ran to the gate from my previous flight, but it turned out this flight had been delayed. The flight boards and United app didn't show that though."

Pros: "Very good no complaint at all"

Pros: "Friendly service"
Cons: "Cramped seating in basic economy, the upgrade seating wasn’t much better"

Pros: "Nice flight!"
Cons: "Huge line to take off at Newark Airport"

Pros: "Very good service"

Pros: "Clean plane, comfy seats and friendly staff"
Cons: "All was good. Didn’t have any problems."

Pros: "Flight left on time and landed early. Attendants were very friendly and helpful."
Cons: "Food choices were very limited for a 4 hour flight."

Pros: "Quick boarding, departed on time, arrived early, good cabin communication"
Cons: "This is a very cramped commuter jet, just one flight attendant to serve entire plane, she came by once for drinks but not a second time"

Pros: "Efficient crew. It"
Cons: "It was good overall."

Pros: "the fact that the flight arrived on time without delay and the gates were easy to locate."
Cons: "How on earth did my i arrived lagos and only one out of my two bags showed up, i have to extend my stay in lagos and hoping my bag will come the next day, i have to pay $100 extra just to extend my one night hotel booking to two nights."

Pros: "1 hour late"

Pros: "The crew on the plane was nice and helpful."
Cons: "I understand pretzels for the most part are allergy friendly however I have a gluten intolerance so I couldn’t have them and i couldn’t download the United app because there wasn’t WiFi available anywhere in the terminal and there weren’t any charging stations."

Pros: "Nice attendant, food OK, no delay."
Cons: "Internet costs"

Pros: "Everything was excellent! I even got upgraded to a window seat!"

Pros: "My wife was happy"
Cons: "Fixing my own supper"

Pros: "Service was excellent"

Pros: "That I didn't have to walk to Fargo. I wasn't dragged off a plane."
Cons: "3 flights to Fargo were cancelled. I was told I would not get to Fargo until 32 hours after my original time I was suppose to land in Fargo. After spending a fair amount of time on the phone with customer service I was able to get me on a Flight to Minneapolis that did not arrive till 1:30am then had to take a rental car to drive 3.5 hours to make it to my destination. I was not compensated for any of this. My return flight from Fargo to St. Louis was also Delayed. Both from Fargo and from Chicago. I have never experienced such poor scheduling from an airline or as many delays or cancelled flights in just a few day period."

Cons: "Never on time"

Pros: "Smooth and positive communication."

Pros: "Everything was smooth"

Pros: "I managed not to use toilet."
Cons: "An epic storm (April 27-May 4) caused my bicycle tour across MO to flood out during our trip. Rescheduling my flight back to CA cost &230..same price as RT. Gouging people leaving a massive flood! The governor of MO declared a State of Emergency yet my trip cancellation insurance didn't cover what was clearly beyond my control. I'm left with some hard feelings."

Pros: "Nothing"
Cons: "No meal on business, no free internet, no entertainment"

Pros: "Fast"
Cons: "Small plane"

Cons: "Flight was delayed so long I missed my connecting flight and spent 18 hours traveling rather than 8."

Pros: "For the most part the ride was nice."
Cons: "Seats were so small"

Pros: "Legroom was a bit tight."

Pros: "I'm always comfortable when riding UA. The staff is professional and helpful!"

Pros: "Flight was pleasant."
Cons: "My luggage was left behind and it was an awful experience! My medication was in my luggage and could not use it which made me suffer tremendous pain and discomfort. No one got back to me to offer compensation!"

Cons: "Flight delay"

Pros: "Easy"

Pros: "Both flights left on time and arrived at least 20 minutes early. My bag arrived at the baggage claim ten minutes after I arrived, and all went very well. I'm grateful."
Cons: "All was perfect"

Pros: "The service was prompt and professional. The plane on this trip was clean and in good repair. The snack was simple and tasty. It was a pleasure flying United."
Cons: "The first flight from St. Louis to Chicago was very small. While I don't have concerns about flying in a small plane, I can imagine those nervous about air travel would feel concerned with the size of the aircraft."

Pros: "Good communication and helpful."
Cons: "Delays"

Pros: "Snack delicious"

Pros: "The boarding process went smoothly and was on schedule."
Cons: "Overhead compartment filled up and it was hard funding space for my bag."

Cons: "Massive delays on both flights out of O'Hare... No leg room...."

Cons: "Completely missed meeting due to 6 changes made during flight - Ask for a refund of some sort and non was given - not even air-miles or ticket recognition. Customer service from United was almost non existent. Will not be flying with united ever again."

Pros: "Good"
Cons: "Good"

Pros: "Nothing"
Cons: "The flight was delayed more times than I can count & cancelled around midnight. AWFUL!"

Cons: "Little more time between flights would be nice"

Cons: "Luggage compartment too small even for a rolling laptop bag"

Pros: "Was able to get on an earlier flight"

Pros: "The crew. Short and sweet flight."
Cons: "Small seats. Bad coffee."

Pros: "Good service"
Cons: "Delay in air"

Cons: "The delay. It was approximately a 2 hour delay getting to Arcata."

Pros: "All the crew were friendly and accommodating."
Cons: "Waiting so long for the flight to actually take off. Very late !"

Pros: "On time"

Pros: "New (to me) lime sparkling soda And a cookie too! Seemed to be a little more seat and leg room."
Cons: "I only wish your branded credit card did not cost$95.00 after first year."

Pros: "we were 10 minutes early to the gate"
Cons: "super cramped quarters, like touching legs to the next person the whole squirmy flight close... the plane was made for little people."

Read more about Delta
COVID-19 information

Safety measures for airlines flying from St. Louis to Montreal

Airlines flying from St. Louis to Montreal 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 St. Louis to Montreal

Mandatory masks

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

Social distancing seating

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

Pre-flight testing

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

Book cheap flights from St. Louis to Montreal

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24/8
Tue.
1 stop
Air Canada
29h 15m
STL - YUL
2/9
Thu.
1 stop
Air Canada
22h 32m
YUL - STL
17/9
Fri.
1 stop
Delta
4h 09m
STL - YUL
24/9
Fri.
1 stop
Delta
6h 39m
YUL - STL
1/1
Sat.
2 stops
American Airlines
9h 03m
STL - YUL
9/1
Sun.
1 stop
American Airlines
7h 43m
YUL - STL
13/9
Mon.
1 stop
Multiple Airlines
7h 41m
STL - YUL
16/9
Thu.
1 stop
Multiple Airlines
6h 39m
YUL - STL
14/9
Tue.
2 stops
Air Canada
18h 23m
STL - YUL
21/9
Tue.
1 stop
Air Canada
16h 36m
YUL - STL
22/9
Wed.
2 stops
Delta
11h 00m
STL - YUL
26/9
Sun.
2 stops
Delta
9h 54m
YUL - STL
13/9
Mon.
2 stops
Multiple Airlines
18h 23m
STL - YUL
16/9
Thu.
1 stop
Multiple Airlines
6h 39m
YUL - STL
23/8
Mon.
2 stops
American Airlines
19h 15m
STL - YUL
1/9
Wed.
1 stop
American Airlines
6h 08m
YUL - STL
25/8
Wed.
1 stop
Air Canada
23h 01m
STL - YUL
3/9
Fri.
1 stop
Air Canada
22h 32m
YUL - STL
13/9
Mon.
2 stops
Multiple Airlines
18h 23m
STL - YUL
16/9
Thu.
2 stops
Multiple Airlines
9h 54m
YUL - STL
23/8
Mon.
1 stop
American Airlines
5h 28m
STL - YUL
1/9
Wed.
1 stop
American Airlines
10h 23m
YUL - STL
17/9
Fri.
1 stop
Air Canada
26h 17m
STL - YUL
24/9
Fri.
2 stops
Air Canada
27h 21m
YUL - STL
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Recent one-way flight deals

7/9
Tue.
2 stops
Air Canada
18h 15m
STL - YUL
21/8
Sat.
1 stop
American Airlines
5h 28m
STL - YUL
7/9
Tue.
1 stop
Air Canada
17h 34m
STL - YUL
8/9
Wed.
2 stops
Air Canada
13h 08m
STL - YUL
8/9
Wed.
1 stop
Air Canada
17h 42m
STL - YUL
8/9
Wed.
3 stops
Multiple Airlines
11h 53m
STL - YUL
30/8
Mon.
2 stops
Air Canada
24h 54m
STL - YUL
21/8
Sat.
2 stops
Air Canada
29h 35m
STL - YUL
7/9
Tue.
3 stops
Multiple Airlines
11h 53m
STL - YUL
30/8
Mon.
3 stops
Multiple Airlines
17h 22m
STL - YUL
21/8
Sat.
3 stops
Multiple Airlines
8h 56m
STL - YUL
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