C$ 189 Find Cheap Flights from Montreal to Costa Mesa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to Costa Mesa departing on 22/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags

Search hundreds of travel sites at once for deals on flights from Montreal to Costa Mesa

In the last 7 days, travellers have searched 41,299,237 times on KAYAK, and here is why:

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Good to know

Low season

April

High season

July

Cheapest flight

C$ 189
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly (4% more expensive on average)
Flight from Montreal to Los Angeles

When to book flights from Montreal to Costa Mesa

Are your dates flexible? Find out the best times to travel from Montreal to Costa Mesa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Montreal to Costa Mesa: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Montreal to Costa Mesa 
Verified travelerFlew with Air CanadaYUL-LAXAug 2024
US bound terminal has very few good options and one lounge that’s always over capacity. Make sure to eat well before getting there.
ROSEMARY JOFlew with Air CanadaYUL-LAXJan 2024
Purchase your own food in the terminal after security to bring on the plane with you with a large bottle of water

FAQs for booking flights from Montreal to Costa Mesa

  • Which airports will I be using when flying from Montreal to Costa Mesa?

    When flying out of Montreal you’ll be using Montreal Pierre Elliott Trudeau Intl. Costa Mesa does not have its own airport so you’ll be flying into nearby Los Angeles airport, which is 56.2 km away.

  • How long does a flight from Montreal to Costa Mesa take?

    Direct flights cover the 6,411 km separating Montreal and Costa Mesa in about 5h 59m.

  • How many flights are there between Montreal and Costa Mesa?

    4 direct flights run between Montreal and Costa Mesa on a daily basis. On average, there are about 28 departures each week.

  • What’s the cheapest day of the week to fly between Montreal and Costa Mesa?

    Consider leaving on a Sunday and avoid Fridays if you are looking for the best rates. For your return to Montreal, you’ll find the best rates on Fridays and the most expensive ones on Saturdays.

  • How does KAYAK find such low prices on flights from Montreal to Costa Mesa?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Montreal to Costa Mesa.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal to Costa Mesa?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Costa Mesa from Montreal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Montreal to Costa Mesa?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Costa Mesa with an airline and back to Montreal with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal to Costa Mesa?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Costa Mesa from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Montreal to Costa Mesa?

    In the last 72 hours, the cheapest one-way ticket between Montreal and Costa Mesa found on KAYAK was with WestJet for C$ 189. WestJet offered a round-trip connection from C$ 284 and Porter Airlines from C$ 320.

See more FAQs

Top tips for finding cheap flights from Montreal to Costa Mesa

  • There is no airport in Costa Mesa. Instead, you’ll be flying into Los Angeles Airport when flying between Montreal and Costa Mesa.
  • The cheapest flight from Montreal to Costa Mesa was found 61 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is September.
See more tips

Top 5 airlines serving Montreal to Costa Mesa

Need help choosing which airline to fly with from Montreal to Costa Mesa? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Porter AirlinesOverall score based on 274 reviews
8.0Comfort
6.9Entertainment
8.2Boarding
8.7Crew
7.6Food
Airline reviews

The only issue had when i mentioned about comfort was the man beside me was on the larger side and took about 1/3 of my seat where i was pressed against the wall/window of the plane for the trip.

8.0 ExcellentJason, Dec 2024YUL - YHZ
Read more Porter Airlines reviews

The only issue had when i mentioned about comfort was the man beside me was on the larger side and took about 1/3 of my seat where i was pressed against the wall/window of the plane for the trip.

The check-in staff, boarding staff, and flight crew were all very friendly. Really miss the Porter lounge in Ottawa.

Thanks for giving a beer to everyone in the seat infront of me and then telling me that I can’t have one because they are going to land. I guess I need to pay for a seat and then pick one in the very front of the plane

The flight was delayed by more than one hour. The terminal was consequently overcrowded and hot. We lost our car reservation and hit rush hour traffic in Boston, which added two hours stuck in traffic to our trip.

Awesome, the whole way through. Thank you, this is the new Canadian Airline benchmark.

We were given a complimentary seat upgrade which was so unexpected but so lovely!

Porter was excellent. Boarding was a breeze. The seats were a little uncomfortably but the overall trip was excellent.

Only packaged snacks were served. It was a flight at lunchtime and a hot meal would have been a great.

Reserve check-in was very slow compared to regular check-in. Internet was slow

Lavatories broke with an hour to go. At least we were on time.

The ANA crew and their members were all extremely nice and caring. Shout out to the crews for working on Christmas and New Years. Y'all the real MVP

Awful. Worst airline I have ever been on. Crew were among the rudest people I have ever dealt with. United staff members were rude and disrespectful. My flight was delayed, causing me to miss a connecting flight. I understand things happen, but when staff start lying about what actually happened, that is when I have an issue. Just be honest, really it isn’t that hard. I’m being very honest with this review and I don’t find this difficult what so ever. In fact, because of United Airlines, my Christmas holiday was off to a really rocky start. As someone who has traveled across the world, it has only been United that I have had a truly awful experience.

Boarding always seems a bit chaotic. Seat spacing could leave more for leg room.

Good flight. On time. Boarding and seating was easy. Crew were really friendly, yet professional. Bathroom (by cockpit) was small but serviceable. Some the seats were showing some notable wear & tear, but were comfy. Very happy UA customer. TY! 🤛🏽💗

We arrived early and finally made it to our gate almost an hour after.

We were delayed 3x and because I didn’t purchase my tickets directly from United Airlines I was told I Have to take care of it myself so I called Underpricer and they helped me but before I changed my flights I took the risk of sticking by what my tickets were and was lucky to have gotten on the original all flight with only 15 mins before take off. not sure if I will do this again

The flight was delayed so the people from a late connecting flight was able to still make the connection.

HORRIBLE WITH THEIR WEBSITE!!! WORST WEBSITE IN THE WHOLE AIRLINE INDUSTRY

Everything good until we waited for jet bridge at SFO. Then pilot gets on speaker & said it won’t reach plane- too short, need to go to different gate. Then 5 min later, adjusted plane/jetbridge & all ok?!?

Was a pain having to leave the plane and reboard but glad the plane was fixed

Absolutely the worst airline I have ever taken. They lost my baggage and told me my bag tags had been cancelled. When my bags arrived days later I had to pick them up at 3:15 am. My return flight was delayed another 6 hours and they broke my bag. Westjet does nothing to try and make it a better customer experience and all the customers services representatives I spoke with were useless and incompetent. Never flying westjet again.

it's all good nothing you can do make better 😌

Very old planes. Seats were not comfortable. Air was not on during the flight leading to incredibly stuffy conditions.

It was so bad experience they wanted just charged passengers for any reason.

Delta was great. West Jet was not. I booked my flight in Sept (well over two months ago), but was told there were 2 reservations and NO tickets for me, my husband and 16mo daughter. We were unable to go ahold of West Jet over the phone and the kiosk was unhelpful so we had to buy completely new tickets in order to get home that day. I’ve called West Jet twice since and sat on the phone for over an hour without speaking to any representatives.

The seats were some of the most uncomfortable I've ever been on. Other similar-sized jets with the same seating arangement have been far more comfortable. This interfered with sleeping, so it was a big issue. Moreover, the lack of a digital boarding pass forced an extra trip to print one, and the overall digital experience was poor. WestJet's website could not figure out one of my flights existed.

The seats were some of the most uncomfortable I've ever been on. Other similar-sized jets with the same seating arangement have been far more comfortable. This interfered with sleeping, so it was a big issue.

flight was delayed and stewards were preoccupied and not helping passengers. The pilot was very communicative which was great. The window was dirty as were the back of the front seats with chewed gum and slime on it. I hope this helps.

Traveling on two legs the food was identical and not very good

Agent checking me in was great. Plane was nice. Problem was with the handling of my fragile check in. They damaged my steel drum, waiting to hear back from them to see if they will take any responsibility. Think twice about travelling with something fragile, they don't seem to treat it any different than normal luggage

Super. Planes were clean. Flights were on time. boarding was smooth. Flight attendants were professional.

ground crew at Casablanca as well as at Montreal was not helpful at all. specially at Montreal airport, very rude .

The TSA people or whatever you call them were a bit rude- I asked why I had to take my shoes off bc I'm 75 and in the USA, I don't have to. The man didn't need to snap at me. It wasn't even busy! The plane was ok, a bit small for such a long flight, but I'm very familiar with the 737 used ( I fly it often between SFO and SAN) service was ok-nothing special. If I drank alcohol I guess I would be happy with free choices. the plane was HOT and even the FA commented on it. They tried to get it cooler, but it never happened.

I have flown on many airlines all over the world, and this plane flight was the most uncomfortable I have ever experienced.

Flight from Minneapolis to Montreal was easy, breezy. Small plane, so not much overhead space. The seats felt slightly smaller than normal, but not uncomfortable for my body type. No screens in the seats for watching movies or shows, but I don't mind, I'm more of a reader.

Excellent overall experience. Seats were comfortable and ample leg room.

Con: Travelers shouldn't have to pay a fee for first checked bag, in any fare class. Pro: Plane was new and comfortable, even for the seats that didn't cost extra.

Wheelchair help is not reliable & chaotic. No food and minimal liquids for a flight at 6;25.

I wasnt able to choose my seat during booking my flight _months_ in advance and then when I checked in for my flight, I _still_ couldnt choose my seat. I was finally able to get a seat when I got to the gate, and they stuck me in a middle seat next to a jerk. This was my return flight, and on my departing flight I was able to choose my seat, so I dont understand what the issue was but it was very annoying and a miserable ~6.5 hours on the return flight.

Gate changed twice, boarding late. However, there was more than usual leg room. Crew was fine. No entertainment due to computer problem.

The flight was canceled. We only found out at the airport. We had to book another flight which cost us more then the whole trip booked through Kayak. Lynx took our email and was supposed to write us with an alternate flight. We never received an email. They talked about reimbursement which was to be explained in the email (which we never received).

The online system for Lynx air to pay for additional baggage is not satisfactory. I was charged 100+$ for my suitcase when I tried to explain that the online payment was not functional using the app and showed screenshots of the same. In the end I gave up and paid and went ahead.

No snacks, just water.... could have been better. The actual flight was good.

Flight delayed by 4 hours but no communication. With passengers until after the posted departure time became apparent the flight was not going to board even close to on time.

Flight was sent canceled. The absolute most useless staff I have ever witnessed. Utterly careless - literally could not care less. 100% never using this airline again.

Poor communication at the check in counter and boarding gates.

Other then the screaming baby the flight was fine, nothing special

Check in experience was smooth, and the flight attendants were courteous and friendly. Very positive experience overall, thank you all!

Flight arrived late but other than that everything else okay

Great price for a new plane. Only offered water which we knew.

Book cheap flights from Montreal to Costa Mesa

Recent round-trip flight deals

18/5Sun
1 stopWestJet
10h 22mYUL-LAX
27/5Tue
1 stopWestJet
10h 03mLAX-YUL
C$ 284
23/5Fri
1 stopWestJet
10h 22mYUL-LAX
30/5Fri
1 stopWestJet
10h 03mLAX-YUL
C$ 297
18/2Tue
1 stopPorter Airlines
8h 38mYUL-LAX
26/2Wed
1 stopPorter Airlines
8h 05mLAX-YUL
C$ 320
23/3Sun
1 stopPorter Airlines
8h 38mYUL-LAX
10/4Thu
1 stopPorter Airlines
8h 05mLAX-YUL
C$ 324
6/2Thu
2 stopsUnited Airlines
10h 43mYUL-LAX
6/2Thu
2 stopsUnited Airlines
13h 59mLAX-YUL
C$ 469
3/2Mon
directAir Canada
6h 18mYUL-LAX
11/2Tue
1 stopAir Canada
10h 43mLAX-YUL
C$ 487
8/2Sat
directUnited Airlines
6h 18mYUL-LAX
16/2Sun
1 stopUnited Airlines
7h 04mLAX-YUL
C$ 493
25/4Fri
1 stopAir Canada
10h 09mYUL-LAX
30/4Wed
directAir Canada
5h 26mLAX-YUL
C$ 516
11/2Tue
1 stopAmerican Airlines
10h 06mYUL-LAX
24/2Mon
1 stopAmerican Airlines
8h 25mLAX-YUL
C$ 528
8/2Sat
2 stopsAmerican Airlines
11h 58mYUL-LAX
15/2Sat
1 stopAmerican Airlines
11h 25mLAX-YUL
C$ 529

Search by stops

Search by airline

Search by price

Recent one-way flight deals

22/5Thu
1 stopWestJet
10h 22mYUL-LAX
C$ 189
3/4Thu
2 stopsWestJet
11h 14mYUL-LAX
C$ 193
21/2Fri
1 stopPorter Airlines
8h 37mYUL-LAX
C$ 195
21/2Fri
1 stopPorter Airlines
8h 37mYUL-LAX
C$ 196
12/2Wed
directUnited Airlines
6h 18mYUL-LAX
C$ 277
28/1Tue
directUnited Airlines
6h 18mYUL-LAX
C$ 287
6/2Thu
directAir Canada
6h 18mYUL-LAX
C$ 290
26/1Sun
1 stopAir Canada
8h 32mYUL-LAX
C$ 303
29/6Sun
1 stopDelta
10h 22mYUL-LAX
C$ 359
13/5Tue
1 stopDelta
10h 22mYUL-LAX
C$ 815

Search by stops

Search by airline

Search by price

Last minute flights from Montreal to Costa Mesa

Last minute flight, train and bus deals

17/1Fri
multi-stopWestJet
23h 11mYUL-LAX
24/1Fri
multi-stopWestJet
14h 40mLAX-YUL
C$ 408
17/1Fri
multi-stopWestJet
33h 11mYUL-LAX
24/1Fri
multi-stopWestJet
14h 40mLAX-YUL
C$ 448
17/1Fri
multi-stop
27h 53mYUL-LAX
24/1Fri
multi-stop
16h 05mLAX-YUL
C$ 451
18/1Sat
multi-stopPorter Airlines
8h 37mYUL-LAX
27/1Mon
multi-stopPorter Airlines
8h 50mLAX-YUL
C$ 848
18/1Sat
multi-stopPorter Airlines
8h 37mYUL-LAX
23/1Thu
multi-stopPorter Airlines
8h 05mLAX-YUL
C$ 973
18/1Sat
directAir Canada
6h 18mYUL-LAX
27/1Mon
directAir Canada
5h 21mLAX-YUL
C$ 996
14/1Tue
directAir Canada
6h 18mYUL-LAX
21/1Tue
directAir Canada
5h 21mLAX-YUL
C$ 1,027
18/1Sat
directUnited Airlines
6h 18mYUL-LAX
3/7Thu
directUnited Airlines
5h 29mLAX-YUL
C$ 1,097
16/1Thu
directUnited Airlines
6h 18mYUL-LAX
19/1Sun
multi-stopUnited Airlines
10h 25mLAX-YUL
C$ 1,102
16/1Thu
multi-stopDelta
10h 50mYUL-LAX
4/2Tue
multi-stopDelta
8h 25mLAX-YUL
C$ 1,311

Search by stops

Search by airline

Search by price

Everything you need to know for your flight from Montreal to Costa Mesa

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.