What is the cheapest airline that flies from Lambert-St Louis to Montreal?

American Airlines and Delta are the most popular carriers operating from Lambert-St Louis to Montreal

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.

C$ 194 Cheap Flights from St. Louis to Montreal in 2025/26

1 adult

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Find the cheapest flights from St. Louis to Montreal

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 a.m. - 3:08 p.m.STL-YUL

8h 08m1 stop

3:52 p.m. - 10:21 a.m.YUL-STL

19h 29m1 stop

C$ 418American Airlines

Find Deal

Tue, 6 Jan - Mon, 12 Jan

6:44 p.m. - 3:08 p.m.STL-YUL

19h 24m1 stop

3:52 p.m. - 10:21 a.m.YUL-STL

19h 29m1 stop

C$ 442American Airlines

Find Deal

Sun, 18 Jan - Fri, 30 Jan

6:44 p.m. - 3:08 p.m.STL-YUL

19h 24m1 stop

7:30 a.m. - 6:13 p.m.YUL-STL

11h 43m2 stops

C$ 470American Airlines

Find Deal

Wed, 28 Jan - Sat, 31 Jan

11:05 a.m. - 10:59 p.m.STL-YUL

10h 54m2 stops

7:30 a.m. - 6:13 p.m.YUL-STL

11h 43m2 stops

C$ 477American Airlines

Find Deal

Wed, 28 Jan - Sat, 31 Jan

5:11 p.m. - 12:30 a.m.STL-YUL

30h 19m1 stop

8:00 a.m. - 10:37 p.m.YUL-STL

39h 37m2 stops

C$ 495Multiple Airlines

Find Deal

Tue, 6 Jan - Mon, 12 Jan

7:41 a.m. - 9:17 p.m.STL-YUL

12h 36m1 stop

9:25 a.m. - 9:00 p.m.YUL-STL

12h 35m1 stop

C$ 541United Airlines

Find Deal

Tue, 17 Feb - Thu, 19 Feb

6:00 a.m. - 3:08 p.m.STL-YUL

8h 08m1 stop

3:52 p.m. - 10:21 a.m.YUL-STL

19h 29m1 stop

C$ 558American Airlines

Find Deal

Wed, 28 Jan - Sat, 31 Jan

5:11 p.m. - 3:10 p.m.STL-YUL

20h 59m2 stops

4:35 p.m. - 7:50 a.m.YUL-STL

16h 15m1 stop

C$ 565Multiple Airlines

Find Deal

Wed, 28 Jan - Sun, 1 Feb

10:42 a.m. - 3:10 p.m.STL-YUL

27h 28m2 stops

4:35 p.m. - 10:33 p.m.YUL-STL

30h 58m1 stop

C$ 572Multiple Airlines

Find Deal

Sun, 18 Jan - Fri, 30 Jan

6:00 a.m. - 3:08 p.m.STL-YUL

8h 08m1 stop

3:52 p.m. - 10:21 a.m.YUL-STL

19h 29m1 stop

C$ 575American Airlines

Find Deal

Wed, 28 Jan - Sun, 1 Feb

Delta flights from St. Louis to Montreal

Our best Delta deals on St. Louis to Montreal flight tickets

Delta

1 Jan

STL6:29 a.m.Lambert-St Louis

4h 29m

1 stop

YUL11:58 a.m.Montreal Pierre Elliott Trudeau Intl

5 Jan

YUL7:30 p.m.Montreal Pierre Elliott Trudeau Intl

14h 29m

1 stop

STL8:59 a.m.Lambert-St Louis

C$ 845

Find similar

Delta

18 Jan

STL6:00 a.m.Lambert-St Louis

11h 37m

2 stops

YUL6:37 p.m.Montreal Pierre Elliott Trudeau Intl

30 Jan

YUL9:34 a.m.Montreal Pierre Elliott Trudeau Intl

12h 05m

2 stops

STL8:39 p.m.Lambert-St Louis

C$ 902

Find similar

Delta

17 Nov

STL7:05 a.m.Lambert-St Louis

10h 35m

2 stops

YUL6:40 p.m.Montreal Pierre Elliott Trudeau Intl

21 Nov

YUL9:26 a.m.Montreal Pierre Elliott Trudeau Intl

12h 20m

2 stops

STL8:46 p.m.Lambert-St Louis

C$ 1,418

Find similar

United Airlines flights from St. Louis to Montreal

Our best United Airlines deals on St. Louis to Montreal flight tickets

United Airlines

17 Feb

STL7:41 a.m.Lambert-St Louis

12h 36m

1 stop

YUL9:17 p.m.Montreal Pierre Elliott Trudeau Intl

19 Feb

YUL9:25 a.m.Montreal Pierre Elliott Trudeau Intl

12h 35m

1 stop

STL9:00 p.m.Lambert-St Louis

C$ 541

Find similar

United Airlines

28 Jan

STL6:30 a.m.Lambert-St Louis

8h 31m

1 stop

YUL4:01 p.m.Montreal Pierre Elliott Trudeau Intl

28 Jan

YUL6:25 p.m.Montreal Pierre Elliott Trudeau Intl

19h 04m

1 stop

STL12:29 p.m.Lambert-St Louis

C$ 607

Find similar

United Airlines

2 Jan

STL9:55 a.m.Lambert-St Louis

10h 22m

1 stop

YUL9:17 p.m.Montreal Pierre Elliott Trudeau Intl

7 Jan

YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl

17h 58m

1 stop

STL10:58 p.m.Lambert-St Louis

C$ 709

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 6/1

6:00 a.m.-3:08 p.m.

1 stop8h 08m

Montreal Pierre Elliott Trudeau Intl

Mon 12/1

3:52 p.m.-10:21 a.m.

1 stop19h 29m

C$ 418

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sun 18/1

6:44 p.m.-3:08 p.m.

1 stop19h 24m

Montreal Pierre Elliott Trudeau Intl

Fri 30/1

3:52 p.m.-10:21 a.m.

1 stop19h 29m

C$ 442

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 28/1

6:44 p.m.-3:08 p.m.

1 stop19h 24m

Montreal Pierre Elliott Trudeau Intl

Sat 31/1

7:30 a.m.-6:13 p.m.

2 stops11h 43m

C$ 470

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 28/1

11:05 a.m.-10:59 p.m.

2 stops10h 54m

Montreal Pierre Elliott Trudeau Intl

Sat 31/1

7:30 a.m.-6:13 p.m.

2 stops11h 43m

C$ 477

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 6/1

5:11 p.m.-12:30 a.m.

1 stop30h 19m

Montreal Pierre Elliott Trudeau Intl

Mon 12/1

8:00 a.m.-10:37 p.m.

2 stops39h 37m

C$ 495

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 17/2

7:41 a.m.-9:17 p.m.

1 stop12h 36m

Montreal Pierre Elliott Trudeau Intl

Thu 19/2

9:25 a.m.-9:00 p.m.

1 stop12h 35m

C$ 541

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 28/1

6:00 a.m.-3:08 p.m.

1 stop8h 08m

Montreal Pierre Elliott Trudeau Intl

Sat 31/1

3:52 p.m.-10:21 a.m.

1 stop19h 29m

C$ 558

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 28/1

5:11 p.m.-3:10 p.m.

2 stops20h 59m

Montreal Pierre Elliott Trudeau Intl

Sun 1/2

4:35 p.m.-7:50 a.m.

1 stop16h 15m

C$ 565

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sun 18/1

10:42 a.m.-3:10 p.m.

2 stops27h 28m

Montreal Pierre Elliott Trudeau Intl

Fri 30/1

4:35 p.m.-10:33 p.m.

1 stop30h 58m

C$ 572

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 28/1

6:00 a.m.-3:08 p.m.

1 stop8h 08m

Montreal Pierre Elliott Trudeau Intl

Sun 1/2

3:52 p.m.-10:21 a.m.

1 stop19h 29m

C$ 575

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 Lambert-St Louis to Montreal flights?

There is only 1 cabin class available to choose from on Lambert-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.

Can stopping save me money on St. Louis to Montreal flights?

You could potentially save up to 39% on your flight if you consider stops on a St. Louis to Montreal flight.

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

Fastest flight time	2h 35m
Direct flights	Fri
Airports in Montreal	1 airport

The fastest flight from St. Louis to Montreal takes 2h 35m

Direct flights go from St. Louis to Montreal on Friday. There are no airlines offering direct flights.

There is 1 airport near Montreal: Montreal Pierre Elliott Trudeau Intl (YUL)

Search flight deals

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 29m, 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?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Montreal is Canadair (Bombardier) Regional Jet 900, representing 57.38% of all bookings. The subsequent popular models are Boeing 787-8 Dreamliner at 13.11%, Airbus A330-300 at 4.92%, and Boeing 737 MAX 8 at 3.28%.

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.