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Cheap flights from St. Louis to Montreal from $207

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
8:24 pm - 11:28 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 04m1 stop Chicago O'Hare Intl
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
$508American Airlines
Fri, Dec 4 - Fri, Dec 11
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
American Airlines Logo
1:04 pm - 12:02 amYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 58m2 stops Philadelphia Chicago O'Hare Intl
$518American Airlines
Fri, Dec 4 - Fri, Dec 11
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
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
$563American Airlines
Fri, Dec 11 - Mon, Dec 14
United Airlines Logo
6:55 pm - 5:07 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
21h 12m1 stop Chicago O'Hare Intl
United Airlines Logo
1:10 pm - 10:59 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
10h 49m1 stop Chicago O'Hare Intl
$742United Airlines
Mon, Dec 7 - Wed, Dec 9
United Airlines Logo
6:55 pm - 10:17 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 22m1 stop Chicago O'Hare Intl
United Airlines Logo
6:10 pm - 12:22 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
19h 12m1 stop Chicago O'Hare Intl
$742United Airlines
Mon, Dec 7 - Wed, Dec 9
United Airlines Logo
5:25 am - 6:57 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
12h 32m1 stop Chicago O'Hare Intl
United Airlines Logo
6:50 pm - 9:49 amYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
15h 59m1 stop Newark
$772United Airlines
Wed, Dec 9 - Sun, Dec 13
Delta Logo
6:40 am - 6:54 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
11h 14m2 stops Detroit Metropolitan Wayne County New York LaGuardia
Delta Logo
9:40 am - 8:32 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
11h 52m2 stops New York LaGuardia Detroit Metropolitan Wayne County
$836Delta
Mon, Nov 30 - Wed, Dec 2
Delta Logo
6:00 am - 6:59 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
11h 59m2 stops Atlanta Hartsfield-Jackson New York LaGuardia
Delta Logo
9:30 am - 8:54 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 24m2 stops New York LaGuardia Detroit Metropolitan Wayne County
$859Delta
Tue, Jan 5 - Fri, Jan 8
Air Canada Logo
4:05 pm - 11:25 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
6h 20m1 stop Toronto Pearson Intl
Air Canada Logo
11:10 am - 3:26 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
5h 16m1 stop Toronto Pearson Intl
$902Air Canada
Fri, Dec 25 - Mon, Dec 28
Air Canada Logo
4:05 pm - 12:25 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
7h 20m1 stop Toronto Pearson Intl
Air Canada Logo
5:00 pm - 3:26 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
23h 26m1 stop Toronto Pearson Intl
$995Air Canada
Thu, Nov 26 - Mon, Nov 30

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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
Dec 7
STL6:55 pmLambert-St Louis
14h 22m
1 stop
YUL10:17 amMontreal Pierre Elliott Trudeau Intl
Dec 9
YUL6:10 pmMontreal Pierre Elliott Trudeau Intl
19h 12m
1 stop
STL12:22 pmLambert-St Louis
$742
United Airlines
Dec 9
STL5:25 amLambert-St Louis
12h 32m
1 stop
YUL6:57 pmMontreal Pierre Elliott Trudeau Intl
Dec 13
YUL6:50 pmMontreal Pierre Elliott Trudeau Intl
15h 59m
1 stop
STL9:49 amLambert-St Louis
$772
United Airlines
Dec 7
STL6:55 pmLambert-St Louis
21h 12m
1 stop
YUL5:07 pmMontreal Pierre Elliott Trudeau Intl
Dec 9
YUL1:10 pmMontreal Pierre Elliott Trudeau Intl
10h 49m
1 stop
STL10:59 pmLambert-St Louis
$779

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
Dec 4
STL8:24 pmLambert-St Louis
14h 04m
1 stop
YUL11:28 amMontreal Pierre Elliott Trudeau Intl
Dec 11
YUL12:08 pmMontreal Pierre Elliott Trudeau Intl
12h 54m
1 stop
STL12:02 amLambert-St Louis
$508
American Airlines
Dec 4
STL8:24 pmLambert-St Louis
14h 04m
1 stop
YUL11:28 amMontreal Pierre Elliott Trudeau Intl
Dec 11
YUL1:04 pmMontreal Pierre Elliott Trudeau Intl
11h 58m
2 stops
STL12:02 amLambert-St Louis
$518
American Airlines
Dec 11
STL8:24 pmLambert-St Louis
14h 04m
1 stop
YUL11:28 amMontreal Pierre Elliott Trudeau Intl
Dec 14
YUL12:08 pmMontreal Pierre Elliott Trudeau Intl
12h 54m
1 stop
STL12:02 amLambert-St Louis
$563

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.

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Route

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Price

Cheapest round-trip

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 12/4

8:24 pm-11:28 am

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Fri 12/11

12:08 pm-12:02 am

1 stop12h 54m

$508

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 12/4

8:24 pm-11:28 am

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Fri 12/11

1:04 pm-12:02 am

2 stops11h 58m

$518

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 12/11

8:24 pm-11:28 am

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Mon 12/14

12:08 pm-12:02 am

1 stop12h 54m

$563

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Mon 12/7

6:55 pm-5:07 pm

1 stop21h 12m

Montreal Pierre Elliott Trudeau Intl

Wed 12/9

1:10 pm-10:59 pm

1 stop10h 49m

$742

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Mon 12/7

6:55 pm-10:17 am

1 stop14h 22m

Montreal Pierre Elliott Trudeau Intl

Wed 12/9

6:10 pm-12:22 pm

1 stop19h 12m

$742

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Wed 12/9

5:25 am-6:57 pm

1 stop12h 32m

Montreal Pierre Elliott Trudeau Intl

Sun 12/13

6:50 pm-9:49 am

1 stop15h 59m

$772

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Mon 11/30

6:40 am-6:54 pm

2 stops11h 14m

Montreal Pierre Elliott Trudeau Intl

Wed 12/2

9:40 am-8:32 pm

2 stops11h 52m

$836

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Tue 1/5

6:00 am-6:59 pm

2 stops11h 59m

Montreal Pierre Elliott Trudeau Intl

Fri 1/8

9:30 am-8:54 pm

2 stops12h 24m

$859
Quickest round-trip

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 12/25

4:05 pm-11:25 pm

1 stop6h 20m

Montreal Pierre Elliott Trudeau Intl

Mon 12/28

11:10 am-3:26 pm

1 stop5h 16m

$902

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Thu 11/26

4:05 pm-12:25 am

1 stop7h 20m

Montreal Pierre Elliott Trudeau Intl

Mon 11/30

5:00 pm-3:26 pm

1 stop23h 26m

$995

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 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

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

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 $300.

What is the cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

The cheapest day to depart from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport is on a Tuesday. Travelers who choose to depart for Montreal Pierre Elliott Trudeau Intl Airport on a Tuesday will often find tickets for as low as $935. Flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport on a Friday will generally be more expensive and average around $1,221. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

In the morning is the cheapest time of day to fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport when you can find flight prices for as low as $994. Flying to Montreal Pierre Elliott Trudeau Intl Airport in the morning is an ideal time because this is during off-peak travel hours. Flights at noon are often more expensive with an average ticket price of $1,166.

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 are 4 cabin classes 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.

Can stopping save me money on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flights?

You could potentially save up to 54% on your flight if you consider stops on a St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flight.

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

$207

Fastest flight time

2h 28m

Direct flights

Fri and Sun
The best one-way flight to Montreal Pierre Elliott Trudeau Intl Airport from St. Louis in the past 72 hours is $207. 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 $508.
The fastest flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport takes 2h 28m
Direct flights go from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport on Friday 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?

    There are 963.7 mi between Lambert-St Louis and Montreal Pierre Elliott Trudeau Intl. A reasonable flight in good conditions will take 2h 28m.

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

  • How old do you have to be to fly from Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl 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 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 required travel and health documents for your Montreal Pierre Elliott Trudeau Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montreal Pierre Elliott Trudeau Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

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

Compare and see reviews for airlines that fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $257Free CancellationRating
7.1
11,875 reviews
Search Air Canada flights
DeltaPriceFrom $288Free CancellationRating
7.8
8,699 reviews
Search Delta flights
United AirlinesPriceFrom $296Free CancellationRating
7.3
10,469 reviews
Search United Airlines flights

Traveling to a place near Montreal?

Book flights to Montreal if you plan to visit one of these locations
Laval
Brossard
Dorval
Cornwall
Longueuil
Trois-Rivières
Saint-Sauveur
Sherbrooke
Saint-Jean-sur-Richelieu
Magog
Bromont
Drummondville
Montebello
Boucherville
North Hatley

Why use momondo?

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

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

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

All flight searches from St. Louis to Montreal on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential St. Louis to Montreal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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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