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Cheap flights from St. Louis to Montreal from C$ 330

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
5:23 p.m. - 11:28 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
17h 05m1 stop Chicago O'Hare Intl
American Airlines Logo
12:08 p.m. - 12:02 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 54m1 stop Chicago O'Hare Intl
C$ 695American Airlines
Sat, 5 Dec - Wed, 9 Dec
American Airlines Logo
11:25 a.m. - 10:48 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
10h 23m2 stops Chicago O'Hare Intl Philadelphia
American Airlines Logo
12:08 p.m. - 12:02 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 54m1 stop Chicago O'Hare Intl
C$ 709American Airlines
Sat, 5 Dec - Wed, 9 Dec
Multiple Airlines Logo
12:02 p.m. - 4:00 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
26h 58m3 stops Atlanta Hartsfield-Jackson Newark Toronto Island
Multiple Airlines Logo
1:40 p.m. - 10:53 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
22h 13m3 stops Toronto Island Washington, D.C. Dulles Intl Atlanta Hartsfield-Jackson
C$ 734Multiple Airlines
Mon, 14 Dec - Thu, 17 Dec
American Airlines Logo
8:24 p.m. - 11:28 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 04m1 stop Chicago O'Hare Intl
American Airlines Logo
12:08 p.m. - 12:02 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 54m1 stop Chicago O'Hare Intl
C$ 739American Airlines
Fri, 11 Dec - Mon, 14 Dec
American Airlines Logo
11:25 a.m. - 10:48 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
10h 23m2 stops Chicago O'Hare Intl Philadelphia
American Airlines Logo
1:04 p.m. - 12:02 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 58m2 stops Philadelphia Chicago O'Hare Intl
C$ 760American Airlines
Sat, 5 Dec - Wed, 9 Dec
American Airlines Logo
8:24 p.m. - 11:28 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 04m1 stop Chicago O'Hare Intl
American Airlines Logo
4:00 p.m. - 8:29 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
17h 29m1 stop Chicago O'Hare Intl
C$ 799American Airlines
Mon, 14 Dec - Fri, 18 Dec
American Airlines Logo
8:24 p.m. - 11:28 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 04m1 stop Chicago O'Hare Intl
American Airlines Logo
12:08 p.m. - 7:58 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
8h 50m1 stop Chicago O'Hare Intl
C$ 822American Airlines
Fri, 4 Dec - Tue, 8 Dec
Multiple Airlines Logo
6:13 p.m. - 10:11 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
26h 58m3 stops Orlando Boston Logan Intl Toronto Island
Multiple Airlines Logo
8:00 a.m. - 11:17 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
28h 17m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
C$ 830Multiple Airlines
Thu, 3 Dec - Sun, 6 Dec
Multiple Airlines Logo
6:13 p.m. - 10:11 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
26h 58m3 stops Orlando Boston Logan Intl Toronto Island
Multiple Airlines Logo
8:00 a.m. - 11:17 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
28h 17m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
C$ 833Multiple Airlines
Thu, 3 Dec - Sun, 6 Dec
American Airlines Logo
8:24 p.m. - 11:28 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 04m1 stop Chicago O'Hare Intl
American Airlines Logo
1:04 p.m. - 12:02 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 58m2 stops Philadelphia Chicago O'Hare Intl
C$ 836American Airlines
Fri, 4 Dec - Tue, 8 Dec

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Delta flights from St. Louis to Montreal

Our best Delta deals on St. Louis to Montreal flight tickets
Delta
5 Dec
STL2:00 p.m.Lambert-St Louis
17h 32m
1 stop
YUL8:32 a.m.Montreal Pierre Elliott Trudeau Intl
8 Dec
YUL2:20 p.m.Montreal Pierre Elliott Trudeau Intl
19h 32m
1 stop
STL8:52 a.m.Lambert-St Louis
C$ 906
Delta
9 Dec
STL9:32 a.m.Lambert-St Louis
8h 22m
1 stop
YUL6:54 p.m.Montreal Pierre Elliott Trudeau Intl
11 Dec
YUL7:44 p.m.Montreal Pierre Elliott Trudeau Intl
17h 17m
1 stop
STL12:01 p.m.Lambert-St Louis
C$ 922
Delta
9 Dec
STL6:32 a.m.Lambert-St Louis
11h 22m
2 stops
YUL6:54 p.m.Montreal Pierre Elliott Trudeau Intl
11 Dec
YUL7:44 p.m.Montreal Pierre Elliott Trudeau Intl
17h 17m
1 stop
STL12:01 p.m.Lambert-St Louis
C$ 936

American Airlines flights from St. Louis to Montreal

Our best American Airlines deals on St. Louis to Montreal flight tickets
American Airlines
5 Dec
STL5:23 p.m.Lambert-St Louis
17h 05m
1 stop
YUL11:28 a.m.Montreal Pierre Elliott Trudeau Intl
9 Dec
YUL12:08 p.m.Montreal Pierre Elliott Trudeau Intl
12h 54m
1 stop
STL12:02 a.m.Lambert-St Louis
C$ 695
American Airlines
5 Dec
STL11:25 a.m.Lambert-St Louis
10h 23m
2 stops
YUL10:48 p.m.Montreal Pierre Elliott Trudeau Intl
9 Dec
YUL12:08 p.m.Montreal Pierre Elliott Trudeau Intl
12h 54m
1 stop
STL12:02 a.m.Lambert-St Louis
C$ 709
American Airlines
11 Dec
STL8:24 p.m.Lambert-St Louis
14h 04m
1 stop
YUL11:28 a.m.Montreal Pierre Elliott Trudeau Intl
14 Dec
YUL12:08 p.m.Montreal Pierre Elliott Trudeau Intl
12h 54m
1 stop
STL12:02 a.m.Lambert-St Louis
C$ 739

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 5/12

5:23 p.m.-11:28 a.m.

1 stop17h 05m

Montreal Pierre Elliott Trudeau Intl

Wed 9/12

12:08 p.m.-12:02 a.m.

1 stop12h 54m

C$ 695

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 5/12

11:25 a.m.-10:48 p.m.

2 stops10h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 9/12

12:08 p.m.-12:02 a.m.

1 stop12h 54m

C$ 709

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Mon 14/12

12:02 p.m.-4:00 p.m.

3 stops26h 58m

Montreal Pierre Elliott Trudeau Intl

Thu 17/12

1:40 p.m.-10:53 a.m.

3 stops22h 13m

C$ 734

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 11/12

8:24 p.m.-11:28 a.m.

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Mon 14/12

12:08 p.m.-12:02 a.m.

1 stop12h 54m

C$ 739
Quickest round-trip

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 5/12

11:25 a.m.-10:48 p.m.

2 stops10h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 9/12

1:04 p.m.-12:02 a.m.

2 stops11h 58m

C$ 760

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Mon 14/12

8:24 p.m.-11:28 a.m.

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Fri 18/12

4:00 p.m.-8:29 a.m.

1 stop17h 29m

C$ 799

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 4/12

8:24 p.m.-11:28 a.m.

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Tue 8/12

12:08 p.m.-7:58 p.m.

1 stop8h 50m

C$ 822

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Thu 3/12

6:13 p.m.-10:11 p.m.

3 stops26h 58m

Montreal Pierre Elliott Trudeau Intl

Sun 6/12

8:00 a.m.-11:17 a.m.

2 stops28h 17m

C$ 830

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Thu 3/12

6:13 p.m.-10:11 p.m.

3 stops26h 58m

Montreal Pierre Elliott Trudeau Intl

Sun 6/12

8:00 a.m.-11:17 a.m.

2 stops28h 17m

C$ 833

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 4/12

8:24 p.m.-11:28 a.m.

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Tue 8/12

1:04 p.m.-12:02 a.m.

2 stops11h 58m

C$ 836

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 cheapest month to fly to Montreal?

The cheapest month to fly to Montreal from St. Louis is in August. Flight prices, which tend to average around C$ 639, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Montreal from St. Louis during February instead. Flights to Montreal in February, while not as cheap as those in August, still average around C$ 707.

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$ 330

Fastest flight time

4h 12m

Direct flights

None
The best one-way flight to Montreal from St. Louis in the past 72 hours is C$ 330. The best round-trip flight deal from St. Louis to Montreal found on momondo in the last 72 hours is C$ 695.
The fastest flight from St. Louis to Montreal takes 4h 12m
There are no direct flights from St. Louis to Montreal. There are no popular flight routes from St. Louis to Montreal.
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 4h 12m, 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?

Why use momondo?

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

MET - Montreal Metropolitan Airport
Montreal Pierre Elliott Trudeau Intl Airport