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Cheap flights from St. Louis to Montreal from C$ 272

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$ 674American 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$ 676American Airlines
Sat, 17 Oct - Mon, 19 Oct
American Airlines Logo
8:15 p.m. - 11:25 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 10m1 stop Chicago O'Hare Intl
American Airlines Logo
12:10 p.m. - 11:59 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 49m1 stop Chicago O'Hare Intl
C$ 676American Airlines
Mon, 9 Nov - Thu, 12 Nov
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$ 676American Airlines
Sat, 17 Oct - Wed, 21 Oct
American Airlines Logo
8:15 p.m. - 11:25 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 10m1 stop Chicago O'Hare Intl
American Airlines Logo
1:04 p.m. - 11:59 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 55m2 stops Philadelphia Chicago O'Hare Intl
C$ 688American Airlines
Mon, 9 Nov - Thu, 12 Nov
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. - 11:58 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
9h 06m1 stop Chicago O'Hare Intl
C$ 695American Airlines
Wed, 20 Jan - Sat, 23 Jan
American Airlines Logo
8:15 p.m. - 11:25 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 10m1 stop Chicago O'Hare Intl
American Airlines Logo
12:10 p.m. - 11:59 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 49m1 stop Chicago O'Hare Intl
C$ 699American Airlines
Mon, 9 Nov - Fri, 13 Nov
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
12:59 p.m. - 11:58 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 59m2 stops Philadelphia Chicago O'Hare Intl
C$ 709American Airlines
Wed, 20 Jan - Sat, 23 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$ 712American 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$ 922Air Canada
Thu, 8 Oct - Thu, 15 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$ 674
American Airlines
17 Oct
STL7:29 a.m.Lambert-St Louis
8h 23m
1 stop
YUL4:52 p.m.Montreal Pierre Elliott Trudeau Intl
19 Oct
YUL5:34 p.m.Montreal Pierre Elliott Trudeau Intl
18h 16m
1 stop
STL10:50 a.m.Lambert-St Louis
C$ 676
American Airlines
9 Nov
STL8:15 p.m.Lambert-St Louis
14h 10m
1 stop
YUL11:25 a.m.Montreal Pierre Elliott Trudeau Intl
12 Nov
YUL1:04 p.m.Montreal Pierre Elliott Trudeau Intl
11h 55m
2 stops
STL11:59 p.m.Lambert-St Louis
C$ 688

Air Canada flights from St. Louis to Montreal

Our best Air Canada deals on St. Louis to Montreal flight tickets
Air Canada
2 Oct
STL12:10 p.m.Lambert-St Louis
2h 31m
YUL3:41 p.m.Montreal Pierre Elliott Trudeau Intl
5 Oct
YUL4:55 p.m.Montreal Pierre Elliott Trudeau Intl
2h 46m
STL6:41 p.m.Lambert-St Louis
C$ 922
Air Canada
2 Oct
STL12:10 p.m.Lambert-St Louis
2h 31m
YUL3:41 p.m.Montreal Pierre Elliott Trudeau Intl
6 Oct
YUL4:55 p.m.Montreal Pierre Elliott Trudeau Intl
2h 46m
STL6:41 p.m.Lambert-St Louis
C$ 929
Air Canada
8 Oct
STL8:55 a.m.Lambert-St Louis
5h 26m
1 stop
YUL3:21 p.m.Montreal Pierre Elliott Trudeau Intl
15 Oct
YUL4:55 p.m.Montreal Pierre Elliott Trudeau Intl
2h 46m
STL6:41 p.m.Lambert-St Louis
C$ 934

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$ 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

Mon 19/10

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

1 stop18h 16m

C$ 676

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Mon 9/11

8:15 p.m.-11:25 a.m.

1 stop14h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 12/11

12:10 p.m.-11:59 p.m.

1 stop12h 49m

C$ 676

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$ 676

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Mon 9/11

8:15 p.m.-11:25 a.m.

1 stop14h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 12/11

1:04 p.m.-11:59 p.m.

2 stops11h 55m

C$ 688

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Wed 20/1

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

1 stop9h 07m

Montreal Pierre Elliott Trudeau Intl

Sat 23/1

3:52 p.m.-11:58 p.m.

1 stop9h 06m

C$ 695

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Mon 9/11

8:15 p.m.-11:25 a.m.

1 stop14h 10m

Montreal Pierre Elliott Trudeau Intl

Fri 13/11

12:10 p.m.-11:59 p.m.

1 stop12h 49m

C$ 699

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Wed 20/1

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

1 stop9h 07m

Montreal Pierre Elliott Trudeau Intl

Sat 23/1

12:59 p.m.-11:58 p.m.

2 stops11h 59m

C$ 709

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$ 712
Quickest round-trip

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Thu 8/10

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

Nonstop2h 31m

Montreal Pierre Elliott Trudeau Intl

Thu 15/10

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

Nonstop2h 46m

C$ 922

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 typical for flights on this route.

Typical prices usually range from C$ 644 to C$ 1,135.
The lowest price recently found on this route was C$ 674.

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$ 634, 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$ 702.

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$ 272

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$ 272. The best round-trip flight deal from St. Louis to Montreal found on momondo in the last 72 hours is C$ 674.
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