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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis from C$ 498

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
12:08 p.m. - 7:57 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
8h 49m1 stop Chicago O'Hare Intl
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
C$ 670American Airlines
Sat, 5 Dec - Mon, 7 Dec
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
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
C$ 674American Airlines
Sat, 5 Dec - Mon, 7 Dec
American Airlines Logo
12:08 p.m. - 7:57 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
8h 49m1 stop Chicago O'Hare Intl
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
C$ 725American Airlines
Sat, 5 Dec - Mon, 7 Dec
United Airlines Logo
4:45 p.m. - 12:13 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
20h 28m1 stop Chicago O'Hare Intl
United Airlines Logo
8:05 a.m. - 6:57 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
9h 52m1 stop Chicago O'Hare Intl
C$ 779United Airlines
Fri, 29 Jan - Tue, 2 Feb
Delta Logo
7:50 p.m. - 10:12 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
15h 22m2 stops New York LaGuardia Detroit Metropolitan Wayne County
Delta Logo
9:45 a.m. - 6:59 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
8h 14m1 stop New York LaGuardia
C$ 804Delta
Fri, 29 Jan - Tue, 2 Feb
American Airlines Logo
12:13 p.m. - 10:28 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 15m1 stop Chicago O'Hare Intl
American Airlines Logo
8:18 p.m. - 11:32 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 14m1 stop Chicago O'Hare Intl
C$ 807American Airlines
Sat, 9 Jan - Thu, 21 Jan
Delta Logo
9:40 a.m. - 8:26 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 46m1 stop New York LaGuardia
Delta Logo
5:20 p.m. - 8:48 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 28m2 stops Minneapolis St Paul New York LaGuardia
C$ 861Delta
Wed, 2 Dec - Fri, 4 Dec
Delta Logo
9:40 a.m. - 9:38 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 58m2 stops New York LaGuardia Atlanta Hartsfield-Jackson
Delta Logo
5:20 p.m. - 8:48 a.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 28m2 stops Minneapolis St Paul New York LaGuardia
C$ 861Delta
Wed, 2 Dec - Fri, 4 Dec
Delta Logo
9:40 a.m. - 8:26 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 46m1 stop New York LaGuardia
Delta Logo
5:31 p.m. - 11:48 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
5h 17m1 stop Atlanta Hartsfield-Jackson
C$ 875Delta
Wed, 2 Dec - Fri, 4 Dec
United Airlines Logo
1:10 p.m. - 10:30 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
22h 20m1 stop Chicago O'Hare Intl
United Airlines Logo
5:05 a.m. - 5:50 p.m.STL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
11h 45m2 stops Chicago O'Hare Intl Washington, D.C. Reagan-National
C$ 876United Airlines
Thu, 10 Dec - Thu, 17 Dec

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

Our best United Airlines deals on Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flight tickets
United Airlines
29 Jan
YUL4:45 p.m.Montreal Pierre Elliott Trudeau Intl
20h 28m
1 stop
STL12:13 p.m.Lambert-St Louis
2 Feb
STL8:05 a.m.Lambert-St Louis
9h 52m
1 stop
YUL6:57 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 779
United Airlines
10 Dec
YUL1:10 p.m.Montreal Pierre Elliott Trudeau Intl
22h 20m
1 stop
STL10:30 a.m.Lambert-St Louis
17 Dec
STL5:05 a.m.Lambert-St Louis
11h 45m
2 stops
YUL5:50 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 876
United Airlines
29 Jan
YUL4:45 p.m.Montreal Pierre Elliott Trudeau Intl
20h 28m
1 stop
STL12:13 p.m.Lambert-St Louis
2 Feb
STL8:05 a.m.Lambert-St Louis
9h 52m
1 stop
YUL6:57 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 913

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

Our best American Airlines deals on Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flight tickets
American Airlines
5 Dec
YUL12:08 p.m.Montreal Pierre Elliott Trudeau Intl
8h 49m
1 stop
STL7:57 p.m.Lambert-St Louis
7 Dec
STL8:24 p.m.Lambert-St Louis
14h 04m
1 stop
YUL11:28 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 670
American Airlines
5 Dec
YUL12:08 p.m.Montreal Pierre Elliott Trudeau Intl
12h 54m
1 stop
STL12:02 a.m.Lambert-St Louis
7 Dec
STL8:24 p.m.Lambert-St Louis
14h 04m
1 stop
YUL11:28 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 674
American Airlines
5 Dec
YUL12:08 p.m.Montreal Pierre Elliott Trudeau Intl
8h 49m
1 stop
STL7:57 p.m.Lambert-St Louis
7 Dec
STL8:24 p.m.Lambert-St Louis
14h 04m
1 stop
YUL11:28 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 725

momondo Fare Finder

 
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 5/12

12:08 p.m.-7:57 p.m.

1 stop8h 49m

Lambert-St Louis

Mon 7/12

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

1 stop14h 04m

C$ 670

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 5/12

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

1 stop12h 54m

Lambert-St Louis

Mon 7/12

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

1 stop14h 04m

C$ 674

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 5/12

12:08 p.m.-7:57 p.m.

1 stop8h 49m

Lambert-St Louis

Mon 7/12

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

1 stop14h 04m

C$ 725

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 29/1

4:45 p.m.-12:13 p.m.

1 stop20h 28m

Lambert-St Louis

Tue 2/2

8:05 a.m.-6:57 p.m.

1 stop9h 52m

C$ 779

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 29/1

7:50 p.m.-10:12 a.m.

2 stops15h 22m

Lambert-St Louis

Tue 2/2

9:45 a.m.-6:59 p.m.

1 stop8h 14m

C$ 804

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 9/1

12:13 p.m.-10:28 p.m.

1 stop11h 15m

Lambert-St Louis

Thu 21/1

8:18 p.m.-11:32 a.m.

1 stop14h 14m

C$ 807

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 2/12

9:40 a.m.-8:26 p.m.

1 stop11h 46m

Lambert-St Louis

Fri 4/12

5:20 p.m.-8:48 a.m.

2 stops14h 28m

C$ 861

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 2/12

9:40 a.m.-9:38 p.m.

2 stops12h 58m

Lambert-St Louis

Fri 4/12

5:20 p.m.-8:48 a.m.

2 stops14h 28m

C$ 861
Quickest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 2/12

9:40 a.m.-8:26 p.m.

1 stop11h 46m

Lambert-St Louis

Fri 4/12

5:31 p.m.-11:48 p.m.

1 stop5h 17m

C$ 875

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/12

1:10 p.m.-10:30 a.m.

1 stop22h 20m

Lambert-St Louis

Thu 17/12

5:05 a.m.-5:50 p.m.

2 stops11h 45m

C$ 876

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis

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 St. Louis?

The month of August is, on average, the cheapest month to fly to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport, with most prices found around C$ 629. If you don’t want to visit St. Louis in August, then you should wait until May to fly from Montreal Pierre Elliott Trudeau Intl Airport, when ticket prices are also cheap, with an average price of C$ 807.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Friday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 790. The most expensive day to fly to St. Louis is Tuesday, with ticket prices averaging around C$ 1,704.

What is the cheapest time of day to depart on your flight to St. Louis?

The cheapest time of day to fly to St. Louis is in the afternoon when flights can be purchased for as low as C$ 804. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 1,704 on average. Flights to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

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

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

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

You could potentially save up to 44% on your flight if you consider stops on a Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flight.

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

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

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

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

Best price found

C$ 498

Fastest flight time

5h 08m

Direct flights

None
The best one-way flight to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport in the past 72 hours is C$ 498. The best round-trip flight deal from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis found on momondo in the last 72 hours is C$ 670.
The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis takes 5h 08m
There are no direct flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis. There are no popular flight routes from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis.
Search flight deals

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

  • How far is Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis by plane?

    A flight from Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis will travel around 1551.0 km. By plane, this route typically takes 5h 08m.

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

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

  • How many operators does momondo search for flights from Montreal Pierre Elliott Trudeau Intl Airport to Lambert-St Louis Airport?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Montreal Pierre Elliott Trudeau Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?

  • What is the most popular airline from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?

Best airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis

Compare and see reviews for airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 573Free CancellationRating
7.1
11,890 reviews
Search Air Canada flights

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Montreal to St. Louis. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to St. Louis from Montreal which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Montreal.

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

Price alerts on flights to St. Louis from Montreal are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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