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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis from $350

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 pm - 7:57 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
8h 49m1 stop Chicago O'Hare Intl
American Airlines Logo
8:24 pm - 11:28 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 04m1 stop Chicago O'Hare Intl
$471American Airlines
Sat, Dec 5 - Mon, Dec 7
American Airlines Logo
12:08 pm - 12:02 amYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 54m1 stop Chicago O'Hare Intl
American Airlines Logo
8:24 pm - 11:28 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 04m1 stop Chicago O'Hare Intl
$474American Airlines
Sat, Dec 5 - Mon, Dec 7
American Airlines Logo
12:08 pm - 7:57 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
8h 49m1 stop Chicago O'Hare Intl
American Airlines Logo
8:24 pm - 11:28 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 04m1 stop Chicago O'Hare Intl
$510American Airlines
Sat, Dec 5 - Mon, Dec 7
United Airlines Logo
4:45 pm - 12:13 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
20h 28m1 stop Chicago O'Hare Intl
United Airlines Logo
8:05 am - 6:57 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
9h 52m1 stop Chicago O'Hare Intl
$548United Airlines
Fri, Jan 29 - Tue, Feb 2
Delta Logo
7:50 pm - 10:12 amYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
15h 22m2 stops New York LaGuardia Detroit Metropolitan Wayne County
Delta Logo
9:45 am - 6:59 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
8h 14m1 stop New York LaGuardia
$565Delta
Fri, Jan 29 - Tue, Feb 2
American Airlines Logo
12:13 pm - 10:28 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 15m1 stop Chicago O'Hare Intl
American Airlines Logo
8:18 pm - 11:32 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 14m1 stop Chicago O'Hare Intl
$567American Airlines
Sat, Jan 9 - Thu, Jan 21
Delta Logo
9:40 am - 8:26 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 46m1 stop New York LaGuardia
Delta Logo
5:20 pm - 8:48 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 28m2 stops Minneapolis St Paul New York LaGuardia
$605Delta
Wed, Dec 2 - Fri, Dec 4
Delta Logo
9:40 am - 9:38 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 58m2 stops New York LaGuardia Atlanta Hartsfield-Jackson
Delta Logo
5:20 pm - 8:48 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 28m2 stops Minneapolis St Paul New York LaGuardia
$605Delta
Wed, Dec 2 - Fri, Dec 4
Delta Logo
9:40 am - 8:26 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 46m1 stop New York LaGuardia
Delta Logo
5:31 pm - 11:48 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
5h 17m1 stop Atlanta Hartsfield-Jackson
$615Delta
Wed, Dec 2 - Fri, Dec 4
United Airlines Logo
1:10 pm - 10:30 amYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
22h 20m1 stop Chicago O'Hare Intl
United Airlines Logo
5:05 am - 5:50 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
11h 45m2 stops Chicago O'Hare Intl Washington, D.C. Reagan-National
$616United Airlines
Thu, Dec 10 - Thu, Dec 17

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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
Jan 29
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
20h 28m
1 stop
STL12:13 pmLambert-St Louis
Feb 2
STL8:05 amLambert-St Louis
9h 52m
1 stop
YUL6:57 pmMontreal Pierre Elliott Trudeau Intl
$548
United Airlines
Dec 10
YUL6:25 pmMontreal Pierre Elliott Trudeau Intl
17h 05m
2 stops
STL10:30 amLambert-St Louis
Dec 17
STL5:05 amLambert-St Louis
11h 45m
2 stops
YUL5:50 pmMontreal Pierre Elliott Trudeau Intl
$616
United Airlines
Jan 29
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
20h 28m
1 stop
STL12:13 pmLambert-St Louis
Feb 2
STL8:05 amLambert-St Louis
9h 52m
1 stop
YUL6:57 pmMontreal Pierre Elliott Trudeau Intl
$642

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

Our best WestJet deals on Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flight tickets
WestJet
Dec 5
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
14h 47m
2 stops
STL8:32 pmLambert-St Louis
Dec 7
STL2:33 pmLambert-St Louis
8h 15m
1 stop
YUL11:48 pmMontreal Pierre Elliott Trudeau Intl
$803
WestJet
Dec 5
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
10h 07m
2 stops
STL3:52 pmLambert-St Louis
Dec 7
STL10:14 amLambert-St Louis
37h 16m
2 stops
YUL12:30 amMontreal Pierre Elliott Trudeau Intl
$866
WestJet
Dec 5
YUL8:00 pmMontreal Pierre Elliott Trudeau Intl
21h 24m
2 stops
STL4:24 pmLambert-St Louis
Dec 7
STL6:05 pmLambert-St Louis
29h 25m
2 stops
YUL12:30 amMontreal Pierre Elliott Trudeau Intl
$876

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.

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Route

Depart

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Price

Cheapest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 12/5

12:08 pm-7:57 pm

1 stop8h 49m

Lambert-St Louis

Mon 12/7

8:24 pm-11:28 am

1 stop14h 04m

$471

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 12/5

12:08 pm-12:02 am

1 stop12h 54m

Lambert-St Louis

Mon 12/7

8:24 pm-11:28 am

1 stop14h 04m

$474

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 12/5

12:08 pm-7:57 pm

1 stop8h 49m

Lambert-St Louis

Mon 12/7

8:24 pm-11:28 am

1 stop14h 04m

$510

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 1/29

4:45 pm-12:13 pm

1 stop20h 28m

Lambert-St Louis

Tue 2/2

8:05 am-6:57 pm

1 stop9h 52m

$548

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 1/29

7:50 pm-10:12 am

2 stops15h 22m

Lambert-St Louis

Tue 2/2

9:45 am-6:59 pm

1 stop8h 14m

$565

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 1/9

12:13 pm-10:28 pm

1 stop11h 15m

Lambert-St Louis

Thu 1/21

8:18 pm-11:32 am

1 stop14h 14m

$567

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 12/2

9:40 am-8:26 pm

1 stop11h 46m

Lambert-St Louis

Fri 12/4

5:20 pm-8:48 am

2 stops14h 28m

$605

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 12/2

9:40 am-9:38 pm

2 stops12h 58m

Lambert-St Louis

Fri 12/4

5:20 pm-8:48 am

2 stops14h 28m

$605
Quickest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 12/2

9:40 am-8:26 pm

1 stop11h 46m

Lambert-St Louis

Fri 12/4

5:31 pm-11:48 pm

1 stop5h 17m

$615

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 12/10

1:10 pm-10:30 am

1 stop22h 20m

Lambert-St Louis

Thu 12/17

5:05 am-5:50 pm

2 stops11h 45m

$616

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 St. Louis from

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?

In general, August is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $442. The month of May is another great option to travel to St. Louis, with average flight prices from Montreal Pierre Elliott Trudeau Intl Airport averaging around $567.

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

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $538. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $690. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

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 15% 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

$350

Fastest flight time

6h 16m

Direct flights

None
The best one-way flight to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport in the past 72 hours is $350. 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 $471.
The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis takes 6h 16m
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 963.7 mi. Flights usually cover this in 6h 16m, depending on flying conditions and air traffic around both airports.

  • 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 refreshed on a daily basis.

  • 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • 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 $478Free CancellationRating
7.1
11,891 reviews
Search Air Canada flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Maryland Heights
St. Peters
Alton
Collinsville
Farmington
Florissant
Festus
Clayton
Hermann
Fenton
Edwardsville
O'Fallon
Eureka
Wentzville
Litchfield
Waterloo
Shrewsbury

Why use momondo?

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

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 St. Louis from Montreal.

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?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Montreal to St. Louis.

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

Yes momondo offers price alerts on flights to St. Louis from Montreal. 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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