What is the cheapest airline that flies from Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl?

American Airlines is the most popular carrier operating from Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl

When did momondo last update prices for flights from Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl Airport?

Prices for flights from Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl Airport are updated daily.

How old do you have to be to fly from Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl Airport?

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 Pierre Elliott Trudeau Intl Airport.

What documentation or ID do you need to fly to Montreal Pierre Elliott Trudeau Intl Airport?

The necessary travel and health documents for your Montreal Pierre Elliott Trudeau Intl Airport 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$ 258 Cheap Flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport in 2026/27

Q: How many flights depart from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport on average per day?

As of September 2026, there are 2 flights per day flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport. The most common time of day flights depart is 12:00p.m., with 100% of flights taking off in the afternoon.

Q: How many flights depart from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport on average per week?

14 flights are operational weekly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport as of September 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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.

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

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$ 642American Airlines

Mon, 2 Nov - Mon, 9 Nov

5:29 p.m. - 11:25 a.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

16h 56m1 stop Chicago O'Hare Intl

12:10 p.m. - 10:15 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

11h 05m1 stop Chicago O'Hare Intl

C$ 642American Airlines

Tue, 3 Nov - Tue, 10 Nov

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

5:34 p.m. - 10:51 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

18h 17m1 stop Chicago O'Hare Intl

C$ 642American Airlines

Sat, 17 Oct - Wed, 28 Oct

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

5:34 p.m. - 10:51 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

18h 17m1 stop Chicago O'Hare Intl

C$ 642American Airlines

Sat, 17 Oct - Tue, 27 Oct

7:26 a.m. - 9:26 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

13h 00m2 stops Chicago O'Hare Intl Philadelphia

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$ 656American Airlines

Tue, 3 Nov - Tue, 10 Nov

7:42 p.m. - 8:30 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

23h 48m3 stops Denver Intl Phoenix Sky Harbor Intl Calgary

2:15 p.m. - 5:40 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

28h 25m3 stops Toronto Pearson Intl New York LaGuardia Atlanta Hartsfield-Jackson

C$ 657Multiple Airlines

Sat, 17 Oct - Tue, 27 Oct

7:26 a.m. - 9:26 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

13h 00m2 stops Chicago O'Hare Intl Philadelphia

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$ 663American Airlines

Tue, 3 Nov - Tue, 10 Nov

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

12:10 p.m. - 11:55 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

12h 45m1 stop Chicago O'Hare Intl

C$ 680American Airlines

Fri, 30 Oct - Thu, 5 Nov

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

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$ 680American Airlines

Fri, 4 Dec - Mon, 7 Dec

12:10 p.m. - 3:41 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mdirect

4:55 p.m. - 6:41 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mdirect

C$ 1,158Air Canada

Sat, 17 Oct - Wed, 21 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

8:00 a.m. - 2:20 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

5h 20m1 stop Chicago O'Hare Intl

4:55 p.m. - 10:59 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

7h 04m1 stop Chicago O'Hare Intl

C$ 1,647United Airlines

Wed, 23 Sep - Wed, 23 Sep

5:47 p.m. - 7:05 a.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

36h 18m2 stops Minneapolis St Paul Calgary

7:43 p.m. - 11:43 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

17h 00m1 stop New York LaGuardia

C$ 1,671WestJet

Sat, 26 Sep - Mon, 28 Sep

11:35 a.m. - 5:30 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

4h 55m1 stop Chicago O'Hare Intl

3:25 p.m. - 9:09 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

6h 44m1 stop Newark

C$ 1,842United Airlines

Sat, 26 Sep - Mon, 28 Sep

5:00 a.m. - 11:44 a.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

5h 44m1 stop Chicago O'Hare Intl

7:29 a.m. - 4:48 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

10h 19m2 stops Charlotte Douglas Chicago O'Hare Intl

C$ 1,889American Airlines

Thu, 24 Sep - Sat, 26 Sep

5:00 a.m. - 11:44 a.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

5h 44m1 stop Chicago O'Hare Intl

5:34 p.m. - 12:27 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

7h 53m1 stop Chicago O'Hare Intl

C$ 1,894American Airlines

Thu, 24 Sep - Sat, 26 Sep

5:00 a.m. - 3:29 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

9h 29m2 stops Chicago O'Hare Intl Philadelphia

5:34 p.m. - 12:27 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

7h 53m1 stop Chicago O'Hare Intl

C$ 1,905American Airlines

Wed, 23 Sep - Wed, 23 Sep

3:52 p.m. - 7:05 a.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

14h 13m2 stops Minneapolis St Paul Calgary

8:00 p.m. - 9:00 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

14h 00m2 stops Calgary Atlanta Hartsfield-Jackson

C$ 1,987WestJet

Sat, 26 Sep - Mon, 28 Sep

11:01 a.m. - 10:52 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

10h 51m2 stops Chicago O'Hare Intl Charlotte Douglas

2:31 p.m. - 12:27 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

10h 56m2 stops Charlotte Douglas Chicago O'Hare Intl

C$ 2,004American Airlines

Thu, 24 Sep - Sat, 26 Sep

6:00 a.m. - 4:45 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

9h 45m2 stops Atlanta Hartsfield-Jackson Toronto Pearson Intl

8:00 p.m. - 10:55 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

15h 55m2 stops Calgary Atlanta Hartsfield-Jackson

C$ 2,052WestJet

Wed, 23 Sep - Wed, 23 Sep

8:30 a.m. - 2:20 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

4h 50m1 stop Chicago O'Hare Intl

4:55 p.m. - 6:41 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mdirect

C$ 2,098Multiple Airlines

Wed, 23 Sep - Wed, 23 Sep

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American Airlines flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

Our best American Airlines deals on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flight tickets

American Airlines

17 Oct

STL5:23 p.m.Lambert-St Louis

17h 21m

1 stop

YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl

28 Oct

YUL5:34 p.m.Montreal Pierre Elliott Trudeau Intl

18h 17m

1 stop

STL10:51 a.m.Lambert-St Louis

C$ 642

American Airlines

3 Nov

STL7:26 a.m.Lambert-St Louis

13h 00m

2 stops

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

10 Nov

YUL12:10 p.m.Montreal Pierre Elliott Trudeau Intl

12h 49m

1 stop

STL11:59 p.m.Lambert-St Louis

C$ 656

American Airlines

3 Nov

STL7:26 a.m.Lambert-St Louis

13h 00m

2 stops

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

10 Nov

YUL1:04 p.m.Montreal Pierre Elliott Trudeau Intl

11h 55m

2 stops

STL11:59 p.m.Lambert-St Louis

C$ 663

United Airlines flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

Our best United Airlines deals on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flight tickets

United Airlines

15 Oct

STL6:00 a.m.Lambert-St Louis

12h 01m

1 stop

YUL7:01 p.m.Montreal Pierre Elliott Trudeau Intl

17 Oct

YUL8:35 a.m.Montreal Pierre Elliott Trudeau Intl

10h 06m

1 stop

STL5:41 p.m.Lambert-St Louis

C$ 844

United Airlines

30 Oct

STL5:00 a.m.Lambert-St Louis

12h 57m

1 stop

YUL6:57 p.m.Montreal Pierre Elliott Trudeau Intl

31 Oct

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

8h 34m

1 stop

STL4:59 p.m.Lambert-St Louis

C$ 882

United Airlines

12 Feb

STL7:04 p.m.Lambert-St Louis

22h 53m

1 stop

YUL6:57 p.m.Montreal Pierre Elliott Trudeau Intl

15 Feb

YUL1:10 p.m.Montreal Pierre Elliott Trudeau Intl

9h 03m

1 stop

STL9:13 p.m.Lambert-St Louis

C$ 1,004

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport 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

Mon 2/11

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

1 stop14h 10m

Montreal Pierre Elliott Trudeau Intl

Mon 9/11

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

1 stop12h 49m

C$ 642

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Tue 3/11

5:29 p.m.-11:25 a.m.

1 stop16h 56m

Montreal Pierre Elliott Trudeau Intl

Tue 10/11

12:10 p.m.-10:15 p.m.

1 stop11h 05m

C$ 642

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 17/10

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

1 stop17h 21m

Montreal Pierre Elliott Trudeau Intl

Wed 28/10

5:34 p.m.-10:51 a.m.

1 stop18h 17m

C$ 642

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 17/10

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

1 stop17h 21m

Montreal Pierre Elliott Trudeau Intl

Tue 27/10

5:34 p.m.-10:51 a.m.

1 stop18h 17m

C$ 642

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Tue 3/11

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

2 stops13h 00m

Montreal Pierre Elliott Trudeau Intl

Tue 10/11

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

1 stop12h 49m

C$ 656

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 17/10

7:42 p.m.-8:30 p.m.

3 stops23h 48m

Montreal Pierre Elliott Trudeau Intl

Tue 27/10

2:15 p.m.-5:40 p.m.

3 stops28h 25m

C$ 657

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Tue 3/11

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

2 stops13h 00m

Montreal Pierre Elliott Trudeau Intl

Tue 10/11

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

2 stops11h 55m

C$ 663

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 30/10

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

1 stop8h 23m

Montreal Pierre Elliott Trudeau Intl

Thu 5/11

12:10 p.m.-11:55 p.m.

1 stop12h 45m

C$ 680

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 4/12

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

1 stop14h 10m

Montreal Pierre Elliott Trudeau Intl

Mon 7/12

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

1 stop12h 49m

C$ 680

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$ 1,158

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 Pierre Elliott Trudeau Intl Airport

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

Other information

What is the typical price of a round-trip flight between St. Louis and Montreal Pierre Elliott Trudeau Intl Airport?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 882 to C$ 1,324.
The lowest price recently found on this route was C$ 642.

What is the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport?

The month of February is, on average, the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport from St. Louis, with most prices found around C$ 0. The month of August is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from St. Louis averaging around C$ 420.

What is the cheapest Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl flight route?

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

What cabin class options are available on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flights?

There is only 1 cabin class available to choose from on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Montreal Pierre Elliott Trudeau Intl Airport (STL to YUL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

Best price found	C$ 258
Fastest flight time	2h 31m
Direct flights	Mon, Thu, Fri, Sat and Sun

The best one-way flight to Montreal Pierre Elliott Trudeau Intl Airport from St. Louis in the past 72 hours is C$ 258. The best round-trip flight deal from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport found on momondo in the last 72 hours is C$ 642.

The fastest flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport takes 2h 31m

Direct flights go from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport on Monday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

Search flight deals

Frequently asked questions about flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

How far is Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl by plane?
The distance between Lambert-St Louis and Montreal Pierre Elliott Trudeau Intl is about 1551.0 km. 2h 31m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl Airport?
Prices for flights from Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl Airport are updated daily.
How old do you have to be to fly from Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl Airport?
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 Pierre Elliott Trudeau Intl Airport.
What documentation or ID do you need to fly to Montreal Pierre Elliott Trudeau Intl Airport?
The necessary travel and health documents for your Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport is Canadair (Bombardier) Regional Jet 900 (69.84% of total bookings). The next most popular plane models are Boeing 787-8 Dreamliner (17.46%), Airbus A330-300 (4.76%), and Airbus A220-300 (3.17%).

Laval

Trois-Rivières

Brossard

Dorval

Sherbrooke

Cornwall

Montebello

Longueuil

Saint-Sauveur

Boucherville

Drummondville

Magog

Bromont

North Hatley

Saint-Jean-sur-Richelieu

Waterloo

Sutton

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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.

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Cheap flights from St. Louis to Montreal from C$ 258

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Montreal departing on 21/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

Our best American Airlines deals on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flight tickets

United Airlines flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

Our best United Airlines deals on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flight tickets

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How to get the cheapest flight ticket from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

What is the typical price of a round-trip flight between St. Louis and Montreal Pierre Elliott Trudeau Intl Airport?

What is the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport?

What is the cheapest Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl flight route?

What cabin class options are available on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flights?

What is the cheapest airline that flies from Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl?

How many flights depart from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport on average per day?

How many flights depart from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport on average per week?

When to book flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

Cheap St. Louis to Montreal Pierre Elliott Trudeau Intl Airport (STL to YUL) flight deals and tips

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Frequently asked questions about flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

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