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STL - YUL

$196 Find cheap flights from St. Louis to Montreal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Montreal departing on 7/21. 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
sáb. 6/29
sáb. 7/6

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Montreal, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Montreal, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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

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

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from St. Louis to Montreal (STL-YUL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Montreal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
12:15 pm - 12:33 amSTL-YUL
35h 18m3 stops
11:05 am - 11:30 amYUL-STL
25h 25m3 stops
mié., jul. 10 - mar., jul. 16
10:11 am - 12:33 amSTL-YUL
13h 22m2 stops
9:15 am - 8:50 pmYUL-STL
12h 35m1 stop
mar., jul. 23 - sáb., jul. 27
12:59 pm - 11:10 pmSTL-YUL
9h 11m1 stop
7:00 am - 2:50 pmYUL-STL
8h 50m1 stop
$483Delta
Find Deal
mar., sep. 3 - mar., sep. 24
9:40 am - 7:12 pmSTL-YUL
8h 32m1 stop
7:00 am - 2:50 pmYUL-STL
8h 50m1 stop
$486Delta
Find Deal
lun., sep. 9 - mar., sep. 17
12:00 pm - 3:23 pmSTL-YUL
2h 23mnonstop
7:30 pm - 9:05 pmYUL-STL
2h 35mnonstop
$512Air Canada
Find Deal
sáb., sep. 7 - sáb., sep. 28
11:10 am - 5:20 pmSTL-YUL
5h 10m1 stop
7:30 pm - 9:05 pmYUL-STL
2h 35mnonstop
$522Air Canada
Find Deal
sáb., sep. 7 - jue., sep. 26
6:08 pm - 11:55 amSTL-YUL
16h 47m1 stop
10:43 am - 8:13 pmYUL-STL
10h 30m1 stop
$530American Airlines
Find Deal
vie., jun. 21 - jue., jun. 27
3:18 pm - 10:44 pmSTL-YUL
6h 26m1 stop
7:29 am - 11:29 pmYUL-STL
17h 00m1 stop
$534American Airlines
Find Deal
sáb., jul. 20 - mar., jul. 23
11:30 am - 2:53 pmSTL-YUL
2h 23mnonstop
5:40 pm - 10:37 pmYUL-STL
5h 57m1 stop
$539United Airlines
Find Deal
mar., jul. 23 - mar., jul. 23
5:20 pm - 10:11 amSTL-YUL
15h 51m2 stops
6:30 pm - 10:07 amYUL-STL
16h 37m2 stops
$551United Airlines
Find Deal
sáb., sep. 7 - vie., sep. 13

Flights from St. Louis to Montreal - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Montreal to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Montreal?

The average price of all flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport clicked on KAYAK for each day over the last 12 months.
When flying from St. Louis to Montreal, you should consider leaving on a Monday and avoid Thursdays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Wednesdays and the most expensive ones on Tuesdays.

What is the cheapest month to fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport is January, where tickets cost $381 on average. On the other hand, the most expensive months are June and September, where the average cost of tickets is $830 and $683 respectively.

How far in advance should I book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 65 days before departure.

Which airlines provide the cheapest flights from St. Louis to Montreal?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting St. Louis to Montreal were found on Delta ($483) and Air Canada ($512). Delta proposed the cheapest one-way flight at $212.

Which airlines fly non-stop between St. Louis and Montreal Pierre Elliott Trudeau Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport.
There is just one airline that flies from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport direct and that is Air Canada. The best one-way deal found from Air Canada for the route is $267.

How many flights are there between St. Louis and Montreal Pierre Elliott Trudeau Intl Airport per day?

There is a maximum of 1 nonstop flight a day that takes off from St. Louis and lands in Montreal Pierre Elliott Trudeau Intl Airport, with an average flight time of 2h 23m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 7 flights.

Which cabin class options are there for flights between St. Louis and Montreal Pierre Elliott Trudeau Intl Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

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

Nonstop flights from St. Louis generally make it to Montreal in 2h 23m. The flying distance between the two cities is 967 miles.

What’s the earliest departure time from St. Louis to Montreal?

Early birds can take the earliest flight from St. Louis at 9:50 am and will be landing in Montreal Pierre Elliott Trudeau Intl Airport at 1:13 pm.

What’s the latest departure time from St. Louis to Montreal?

If you prefer to fly at night, the latest flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport jets off at 11:30 am and lands at 2:53 pm.

Good to know

Low season

January

High season

August

Cheapest flight

$196
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from St. Louis to Montreal

When to book flights from St. Louis to Montreal

Are your dates flexible? Find out the best times to travel from St. Louis to Montreal based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Montreal flights

  • What is the cheapest flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport was $196 for a one-way ticket and $434 for a round-trip.

  • Do I need a passport to fly between St. Louis and Montreal?

    Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Montreal.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Montreal?

    Air Canada, Lufthansa, and United Airlines offer inflight Wi-Fi service on the St. Louis to Montreal flight route.

  • Which aircraft models fly most regularly from St. Louis to Montreal?

    The Canadair (Bombardier) Regional Jet 900 is the aircraft model that flies most regularly on the St. Louis to Montreal flight route.

  • Which airline alliances offer flights from St. Louis to Montreal?

    Star Alliance is the only airline alliance operating flights between St. Louis and Montreal.

  • On which days can I fly direct from St. Louis to Montreal?

    There are nonstop flights from St. Louis to Montreal on a daily basis.

  • Which is the best airline for flights from St. Louis to Montreal, Delta or WestJet?

    The two airlines most popular with KAYAK users for flights from St. Louis to Montreal are Delta and WestJet. With an average price for the route of $597 and an overall rating of 8.0, Delta is the most popular choice. WestJet is also a great choice for the route, with an average price of $645 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from St. Louis to Montreal?

    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 St. Louis to Montreal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Montreal from St. Louis 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 St. Louis to Montreal?

    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 Montreal with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and YUL can sometimes prove cheaper using this method.

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

    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 Montreal from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $299 or less one-way and $802 or less round-trip.

Prefer to fly non-stop from St. Louis to Montreal?

Find which airlines fly direct from Lambert-St Louis to Pierre Elliott Trudeau Intl, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl

Monday

Air Canada, United Airlines

Air Canada, United Airlines

Tuesday

Air Canada, United Airlines

Air Canada, United Airlines

Wednesday

Air Canada, United Airlines

Air Canada, United Airlines

Thursday

Air Canada, United Airlines

Air Canada, United Airlines

Friday

Air Canada, United Airlines

Air Canada, United Airlines

Saturday

Air Canada, United Airlines

Air Canada, United Airlines

Sunday

Air Canada, United Airlines

Air Canada, United Airlines

See more direct flights

Nonstop returns

Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis

Monday

Air Canada, United Airlines

Air Canada, United Airlines

Tuesday

Air Canada, United Airlines

Air Canada, United Airlines

Wednesday

Air Canada, United Airlines

Air Canada, United Airlines

Thursday

Air Canada, United Airlines

Air Canada, United Airlines

Friday

Air Canada, United Airlines

Air Canada, United Airlines

Saturday

Air Canada, United Airlines

Air Canada, United Airlines

Sunday

Air Canada, United Airlines

Air Canada, United Airlines

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to Montreal

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Montreal. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Montreal? 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.
8.0
DeltaOverall score based on 10457 reviews
8.2Boarding
7.9Comfort
8.6Crew
7.4Food
8.0Entertainment
Airline reviews

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

10.0 ExcellentAnonymous, May 2024MSP - YVR
Read more about Delta reviews

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They lost our luggage and didn’t return it until 15 days AFTER we got back.

food worker strike caused lack of service. I know, not your fault but a bit of a inconvenience.

The staff on the WestJet flight were friendly and helpful. The flight was smooth and we arrived 30 minutes ahead of time.

The on time performance and the ease of boarding are great. The crew were cordial. During landing the pilot made a hard landing with some swerve that was a bit rough but other than that everything else is as smooth as it can be.

Horrible, flight on the way to Vegas was delayed significantly and then on my way back my second flight was cancelled

If they have a tv for movie or map during 5h flight could be better and the food can purchase on flight are ok with that.

We requested 2 wheel chairs upon arrival. On board an attendant told us to remain in our seats until everyone was off the plane. we were in row 11 and thought we would be off early. After all were off, a different attendant said we should leave, and that the chairs were gone. One was available for my friend who had just spent 9 days in hospital but I had to walk quite some distance. Eventually a cart arrived to take us the rest of the way. This was over an hour after our arrival. The staff at the terminal did their best to help us but if we had been allowed off with the other passengers, our ride home would have been an hour earlier.

Our flight experience was great! Flight staff was funny and offered great service. Made record flying time coming home from Vegas after having to wait for planes on the tarmac because of high winds

Seats can use more cushioning, it felt very hard. The snack option could be better

Over all good. I had some issues with trying to buy my seat. The Westjet system kept trying to charge my credit card, without getting the seat. In the end after 5 times being charged, I got my seat.

Well....let's start from the point that I had to stay in airport for 12 hours instead of 2 that was scheduled. Poor company and even worst customer service. Never again....

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

Fine. Though no food or entertainment so the survey needs to be updated with those options.

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

Standard flight experience, but there is only power at the seat to row 20 on the aircraft, on my initial check in it did not say that was the case

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Experience was bad. 3.5 hour delay for a 2.5 hour trip. There was no r Transparency about the reason for the delay and it was done 30 mins at a time.

Original flight delayed several times and finally canceled at 2:30 in the morning. Staff at the gate was not very helpful in resolving problems or communicating why there were delays. I spent 34 hours at the airport before I could leave, they couldn't book me on another early flight even after canceling my original flight. Next flight available after my original flight was canceled was 22 hours later. I will never fly American Airlines again.

very very tight seats unfriendly crew who do not seem to care about the comfort of their passengers and do not know how to smile poor ground staff support at LHR and PHX

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

AA1537 the AC was not working properly. It was very hot and uncomfortable.

So uncomfortable to sit in the tiny space on a long, international. Food was rough. Please, less white flour and processed food.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Plenty of room in the exit row. Sat on the plane an hour before taking off.☹️ Landed late and had to wait for gate availability.

Delayed leaving. On arrival we were taken to the airstrip and had to get off onto an over crowed bus, not all that passengers fit. Drove around the airport for 20 + minutes. Taken off the bus told to go upstairs 3 flights then all the passengers had to walk a mile or more , those of us old there was no one to direct us to were to go. I asked several people with no answers. Once I got to baggage claim my bags were not on the right bag claim. Once again asked for help and finally someone found my bags on a different carasel. Very frustrating.

They canceled the flight on us very close to the flight date .

It took 66 hours to get from Seattle to Tel Aviv. As a minor, I was left for more than 12 hours in Toronto and Frankfurt without hotel and food vouchers. It took 5 layovers. It was insane and not okay

It was delayed but got us to YYZ. I had great copassengers.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

All was good, except our baggage was lost for most of a day. We are thankful that it was found quickly and delivered to our hotel. Rouge was fine outside of that problem.

Easy boarding, roomy seats, plenty of good food, very helpful snd friendly staff. Very smooth flight! Only thing that could have been better was to have cranberry juice. Women like this as it helps avoid UTI’s and not as sweet as other juices.

The late departure Of two hours waitresses, immature, and gossiping

It was upsetting that the flights were canceled but that was due to weather. I did not receive any vouchers for food or a hotel stay when I was forced to spend the night in Montreal. I was also upset when my seat was changed many times.. The plane seemed old with a non-functioning screen and loose side pockets.. All in all in need of updating. On the positive side, the staff in areas was friendly and helpful.

Book cheap flights from St. Louis to Montreal

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Montreal found on KAYAK in the last 72 hours.
7/21dom.
1 stop
19h 41mSTL-YUL
$196
7/23mar.
2 stops
13h 22mSTL-YUL
$198
7/23mar.
1 stopDelta
9h 11mSTL-YUL
$212
7/22lun.
1 stopDelta
12h 57mSTL-YUL
$227
7/21dom.
nonstopUnited Airlines
2h 23mSTL-YUL
$230
7/5vie.
1 stopAmerican Airlines
7h 35mSTL-YUL
$238
7/5vie.
nonstopAir Canada
2h 23mSTL-YUL
$275
7/18jue.
1 stopUnited Airlines
6h 08mSTL-YUL
$284
7/18jue.
2 stopsAmerican Airlines
9h 32mSTL-YUL
$314
6/8sáb.
nonstopAir Canada
2h 23mSTL-YUL
$364

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Last minute flights from St. Louis to Montreal

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Montreal that are departing in the next 10 days.
6/4mar.
multi-stopDelta
9h 30mSTL-YUL
6/6jue.
multi-stopDelta
9h 09mYUL-STL
$677
6/4mar.
multi-stopAmerican Airlines
16h 53mSTL-YUL
6/5mié.
multi-stopAmerican Airlines
10h 27mYUL-STL
$736
6/4mar.
multi-stopDelta
9h 30mSTL-YUL
6/6jue.
multi-stopDelta
10h 57mYUL-STL
$739
6/4mar.
multi-stopWestJet
9h 30mSTL-YUL
6/7vie.
multi-stopWestJet
5h 56mYUL-STL
$761
6/4mar.
multi-stopAmerican Airlines
5h 19mSTL-YUL
6/5mié.
multi-stopAmerican Airlines
11h 13mYUL-STL
$813
6/4mar.
multi-stopAmerican Airlines
8h 00mSTL-YUL
6/5mié.
multi-stopAmerican Airlines
11h 13mYUL-STL
$818
6/4mar.
multi-stopDelta
8h 14mSTL-YUL
6/7vie.
multi-stopDelta
10h 20mYUL-STL
$827
6/4mar.
multi-stopUnited Airlines
6h 08mSTL-YUL
6/5mié.
nonstopUnited Airlines
2h 35mYUL-STL
$828
6/4mar.
nonstopAir Canada
2h 23mSTL-YUL
6/7vie.
nonstopAir Canada
2h 35mYUL-STL
$1,098
6/4mar.
multi-stopAir Canada
8h 15mSTL-YUL
6/7vie.
nonstopAir Canada
2h 35mYUL-STL
$1,108

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St. Louis - Montreal Flights

Departure:

St. Louis (STL)United States

Destination:

Montreal (YUL)Canada

Return flight deals:

Montreal - St. Louis

Cabin classes:

$966
$1,404
$1,827
$526