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Find cheap flights from St. Louis to Montreal from C$ 230

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 30/5. 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
Thu 6/6
Thu 13/6

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, travellers have searched 42,573,820 times on KAYAK, and here is why:

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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
10:34 a.m. - 1:45 p.m.STL-YUL
26h 11m3 stops
6:50 a.m. - 2:23 p.m.YUL-STL
8h 33m1 stop
C$ 474
Find Deal
Tue, 4 Jun - Tue, 11 Jun
10:34 a.m. - 12:33 a.m.STL-YUL
12h 59m2 stops
6:50 a.m. - 2:23 p.m.YUL-STL
8h 33m1 stop
C$ 513
Find Deal
Tue, 4 Jun - Tue, 11 Jun
9:50 a.m. - 1:13 p.m.STL-YUL
2h 23mdirect
4:05 p.m. - 8:01 p.m.YUL-STL
4h 56m1 stop
C$ 586Air Canada
Find Deal
Sat, 29 Jun - Mon, 1 Jul
6:30 a.m. - 6:53 p.m.STL-YUL
11h 23m1 stop
4:05 p.m. - 8:01 p.m.YUL-STL
4h 56m1 stop
C$ 591Air Canada
Find Deal
Sat, 29 Jun - Mon, 1 Jul
1:10 p.m. - 11:05 p.m.STL-YUL
8h 55m1 stop
7:00 a.m. - 6:11 p.m.YUL-STL
12h 11m1 stop
C$ 611Delta
Find Deal
Wed, 19 Jun - Tue, 25 Jun
12:00 p.m. - 3:23 p.m.STL-YUL
2h 23mdirect
7:30 p.m. - 9:05 p.m.YUL-STL
2h 35mdirect
C$ 615United Airlines
Find Deal
Sat, 17 Aug - Sun, 25 Aug
10:45 a.m. - 9:15 p.m.STL-YUL
9h 30m1 stop
10:00 a.m. - 6:11 p.m.YUL-STL
9h 11m1 stop
C$ 625Delta
Find Deal
Tue, 4 Jun - Tue, 11 Jun
8:25 a.m. - 7:27 p.m.STL-YUL
10h 02m1 stop
7:30 p.m. - 9:05 p.m.YUL-STL
2h 35mdirect
C$ 628United Airlines
Find Deal
Sat, 17 Aug - Sat, 24 Aug
12:00 p.m. - 3:23 p.m.STL-YUL
2h 23mdirect
7:30 p.m. - 9:05 p.m.YUL-STL
2h 35mdirect
C$ 638Lufthansa
Find Deal
Sat, 10 Aug - Sat, 17 Aug
12:00 p.m. - 3:23 p.m.STL-YUL
2h 23mdirect
5:40 p.m. - 10:45 p.m.YUL-STL
6h 05m1 stop
C$ 660Lufthansa
Find Deal
Sat, 10 Aug - Sat, 17 Aug

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 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 C$ 521 on average. On the other hand, the most expensive months are June and September, where the average cost of tickets is C$ 1,135 and C$ 939 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 day 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 Air Canada (C$ 586) and Delta (C$ 611). Sun Country Air proposed the cheapest one-way flight at C$ 249.

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 11:00 a.m. 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 is only one cabin class option available for the route, which is 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?

Direct flights from St. Louis generally make it to Montreal in 2h 23m. The flying distance between the two cities is 2,504 km.

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 11:00 am and lands at 2:23 pm.

Good to know

Low season

January

High season

August

Cheapest flight

C$ 230
Best time to beat the crowds (33% less expensive on average)
Most popular time to fly and prices are also 1% 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 C$ 168 for a one-way ticket and C$ 347 for a round-trip.

  • 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 direct flights from St. Louis to Montreal on a daily basis.

  • 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 travellers 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.

  • 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

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 nonstop 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 nonstop flights
See more nonstop flights

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.
30/5Thu
1 stop
17h 36mSTL-YUL
C$ 230
30/5Thu
2 stops
19h 01mSTL-YUL
C$ 241
30/6Sun
1 stopSun Country Air
15h 56mSTL-YUL
C$ 249
25/5Sat
3 stops
26h 51mSTL-YUL
C$ 265
21/6Fri
directAir Canada
2h 23mSTL-YUL
C$ 271
5/7Fri
1 stopAir Canada
6h 28mSTL-YUL
C$ 284
24/6Mon
1 stopAir Canada
6h 18mSTL-YUL
C$ 286
7/6Fri
1 stopDelta
5h 30mSTL-YUL
C$ 364
21/6Fri
2 stopsAmerican Airlines
8h 30mSTL-YUL
C$ 394
30/6Sun
2 stopsAmerican Airlines
9h 22mSTL-YUL
C$ 395

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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:

C$ 375

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