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Cheap flights from St. Louis to Montreal from C$ 285

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:29 a.m. - 4:52 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
8h 23m1 stop Chicago O'Hare Intl
American Airlines Logo
5:34 p.m. - 10:50 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
18h 16m1 stop Chicago O'Hare Intl
C$ 661American Airlines
Sat, 17 Oct - Wed, 21 Oct
American Airlines Logo
5:00 a.m. - 4:52 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
10h 52m1 stop Chicago O'Hare Intl
American Airlines Logo
12:30 p.m. - 8:57 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
9h 27m1 stop Chicago O'Hare Intl
C$ 665American Airlines
Wed, 14 Oct - Wed, 21 Oct
American Airlines Logo
7:29 a.m. - 4:52 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
8h 23m1 stop Chicago O'Hare Intl
American Airlines Logo
5:34 p.m. - 10:50 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
18h 16m1 stop Chicago O'Hare Intl
C$ 669American Airlines
Sat, 17 Oct - Wed, 21 Oct
American Airlines Logo
7:29 a.m. - 4:52 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
8h 23m1 stop Chicago O'Hare Intl
American Airlines Logo
5:34 p.m. - 10:50 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
18h 16m1 stop Chicago O'Hare Intl
C$ 670American Airlines
Sat, 17 Oct - Wed, 21 Oct
American Airlines Logo
7:26 a.m. - 9:42 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
13h 16m2 stops Chicago O'Hare Intl Philadelphia
American Airlines Logo
5:34 p.m. - 10:18 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
17h 44m1 stop Chicago O'Hare Intl
C$ 674American Airlines
Wed, 9 Sep - Tue, 15 Sep
American Airlines Logo
7:29 a.m. - 4:52 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
8h 23m1 stop Chicago O'Hare Intl
American Airlines Logo
5:34 p.m. - 10:50 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
18h 16m1 stop Chicago O'Hare Intl
C$ 690American Airlines
Sat, 17 Oct - Wed, 21 Oct
American Airlines Logo
7:21 a.m. - 4:53 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
8h 32m1 stop Chicago O'Hare Intl
American Airlines Logo
5:34 p.m. - 10:18 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
17h 44m1 stop Chicago O'Hare Intl
C$ 692American Airlines
Fri, 18 Sep - Fri, 25 Sep
American Airlines Logo
5:00 a.m. - 3:07 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
9h 07m1 stop Chicago O'Hare Intl
American Airlines Logo
3:52 p.m. - 10:51 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
19h 59m1 stop Chicago O'Hare Intl
C$ 702American Airlines
Tue, 19 Jan - Sun, 24 Jan
American Airlines Logo
5:23 p.m. - 11:44 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
17h 21m1 stop Chicago O'Hare Intl
American Airlines Logo
5:34 p.m. - 10:50 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
18h 16m1 stop Chicago O'Hare Intl
C$ 706American Airlines
Sat, 10 Oct - Wed, 14 Oct
Air Canada Logo
12:10 p.m. - 3:41 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
2h 31mdirect
Air Canada Logo
4:55 p.m. - 6:41 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
2h 46mdirect
C$ 1,034Air Canada
Sat, 17 Oct - Wed, 21 Oct

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American Airlines flights from St. Louis to Montreal

Our best American Airlines deals on St. Louis to Montreal flight tickets
American Airlines
17 Oct
STL7:29 a.m.Lambert-St Louis
8h 23m
1 stop
YUL4:52 p.m.Montreal Pierre Elliott Trudeau Intl
21 Oct
YUL5:34 p.m.Montreal Pierre Elliott Trudeau Intl
18h 16m
1 stop
STL10:50 a.m.Lambert-St Louis
C$ 661
American Airlines
14 Oct
STL5:00 a.m.Lambert-St Louis
10h 52m
1 stop
YUL4:52 p.m.Montreal Pierre Elliott Trudeau Intl
21 Oct
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
9h 27m
1 stop
STL8:57 p.m.Lambert-St Louis
C$ 665
American Airlines
17 Oct
STL7:29 a.m.Lambert-St Louis
8h 23m
1 stop
YUL4:52 p.m.Montreal Pierre Elliott Trudeau Intl
21 Oct
YUL5:34 p.m.Montreal Pierre Elliott Trudeau Intl
18h 16m
1 stop
STL10:50 a.m.Lambert-St Louis
C$ 669

Air Canada flights from St. Louis to Montreal

Our best Air Canada deals on St. Louis to Montreal flight tickets
Air Canada
6 Sep
STL12:10 p.m.Lambert-St Louis
2h 32m
YUL3:42 p.m.Montreal Pierre Elliott Trudeau Intl
10 Sep
YUL4:55 p.m.Montreal Pierre Elliott Trudeau Intl
2h 46m
STL6:41 p.m.Lambert-St Louis
C$ 1,283
Air Canada
6 Sep
STL12:10 p.m.Lambert-St Louis
2h 32m
YUL3:42 p.m.Montreal Pierre Elliott Trudeau Intl
10 Sep
YUL4:55 p.m.Montreal Pierre Elliott Trudeau Intl
2h 46m
STL6:41 p.m.Lambert-St Louis
C$ 1,312
Air Canada
6 Sep
STL2:40 p.m.Lambert-St Louis
4h 47m
1 stop
YUL8:27 p.m.Montreal Pierre Elliott Trudeau Intl
10 Sep
YUL1:10 p.m.Montreal Pierre Elliott Trudeau Intl
8h 10m
2 stops
STL8:20 p.m.Lambert-St Louis
C$ 1,327

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Montreal that are best for you.

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Route

Depart

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Price

Cheapest round-trip

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sat 17/10

7:29 a.m.-4:52 p.m.

1 stop8h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 21/10

5:34 p.m.-10:50 a.m.

1 stop18h 16m

C$ 661

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 14/10

5:00 a.m.-4:52 p.m.

1 stop10h 52m

Montreal Pierre Elliott Trudeau Intl

Wed 21/10

12:30 p.m.-8:57 p.m.

1 stop9h 27m

C$ 665

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sat 17/10

7:29 a.m.-4:52 p.m.

1 stop8h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 21/10

5:34 p.m.-10:50 a.m.

1 stop18h 16m

C$ 669

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sat 17/10

7:29 a.m.-4:52 p.m.

1 stop8h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 21/10

5:34 p.m.-10:50 a.m.

1 stop18h 16m

C$ 670

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 9/9

7:26 a.m.-9:42 p.m.

2 stops13h 16m

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

5:34 p.m.-10:18 a.m.

1 stop17h 44m

C$ 674

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sat 17/10

7:29 a.m.-4:52 p.m.

1 stop8h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 21/10

5:34 p.m.-10:50 a.m.

1 stop18h 16m

C$ 690

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Fri 18/9

7:21 a.m.-4:53 p.m.

1 stop8h 32m

Montreal Pierre Elliott Trudeau Intl

Fri 25/9

5:34 p.m.-10:18 a.m.

1 stop17h 44m

C$ 692

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Tue 19/1

5:00 a.m.-3:07 p.m.

1 stop9h 07m

Montreal Pierre Elliott Trudeau Intl

Sun 24/1

3:52 p.m.-10:51 a.m.

1 stop19h 59m

C$ 702

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sat 10/10

5:23 p.m.-11:44 a.m.

1 stop17h 21m

Montreal Pierre Elliott Trudeau Intl

Wed 14/10

5:34 p.m.-10:50 a.m.

1 stop18h 16m

C$ 706
Quickest round-trip

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sat 17/10

12:10 p.m.-3:41 p.m.

Nonstop2h 31m

Montreal Pierre Elliott Trudeau Intl

Wed 21/10

4:55 p.m.-6:41 p.m.

Nonstop2h 46m

C$ 1,034

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Montreal from

How to get the cheapest flight ticket from St. Louis to Montreal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Montreal?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 676 to C$ 1,127.
The lowest price recently found on this route was C$ 661.

What is the cheapest month to fly to Montreal?

The cheapest month to fly to Montreal from St. Louis is in February. Flight prices, which tend to average around C$ 696, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Montreal from St. Louis during August instead. Flights to Montreal in August, while not as cheap as those in February, still average around C$ 783.

What is the cheapest Lambert-St Louis to Montreal flight route?

Fly from Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl for the best Lambert-St Louis - Montreal flight prices

What cabin class options are available on St. Louis to Montreal flights?

There is only 1 cabin class available to choose from on St. Louis to Montreal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

When to book flights from St. Louis to Montreal

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Montreal according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Montreal (STL to YMQ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Montreal

Best price found

C$ 285

Fastest flight time

2h 31m

Direct flights

Every day

Airports in Montreal

2 airports
The best one-way flight to Montreal from St. Louis in the past 72 hours is C$ 285. The best round-trip flight deal from St. Louis to Montreal found on momondo in the last 72 hours is C$ 661.
The fastest flight from St. Louis to Montreal takes 2h 31m
Direct flights go from St. Louis to Montreal every day.
There are 2 airports in Montreal. From St. Louis there are direct flights to Montreal Pierre Elliott Trudeau Intl (YUL).
Search flight deals

Frequently asked questions about flying from St. Louis to Montreal

  • How far is Lambert-St Louis to Montreal by plane?

    The straight-line distance from Lambert-St Louis to Montreal is 1566.0 km. Flights usually cover this in 2h 31m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Montreal?

    Prices for flights from Lambert-St Louis Airport to Montreal were last updated today.

  • How old do you have to be to fly from Lambert-St Louis Airport to Montreal?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Montreal.

  • What documentation or ID do you need to fly to Montreal?

    The necessary travel and health documents for your Montreal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Montreal?

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Why should I use momondo to find a flight deal from St. Louis to Montreal?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Montreal from St. Louis.

Can I find flights from St. Louis to Montreal with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Montreal from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Montreal?

Once you have performed a search for St. Louis to Montreal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Montreal right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Montreal from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Canada

Fly into one of these airports located in Montreal

Montreal St Hubert Airport
Montreal Pierre Elliott Trudeau Intl Airport