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Cheap flights from St. Louis to Montreal from $161

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
5:23 pm - 11:44 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
17h 21m1 stop Chicago O'Hare Intl
American Airlines Logo
5:34 pm - 10:51 amYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
18h 17m1 stop Chicago O'Hare Intl
$458American Airlines
Sat, Oct 17 - Wed, Oct 28
American Airlines Logo
5:23 pm - 11:44 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
17h 21m1 stop Chicago O'Hare Intl
American Airlines Logo
5:34 pm - 10:51 amYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
18h 17m1 stop Chicago O'Hare Intl
$458American Airlines
Sat, Oct 17 - Tue, Oct 27
Multiple Airlines Logo
7:42 pm - 8:30 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
23h 48m3 stops Denver Intl Phoenix Sky Harbor Intl Calgary
Multiple Airlines Logo
2:15 pm - 5:40 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
28h 25m3 stops Toronto Pearson Intl New York LaGuardia Atlanta Hartsfield-Jackson
$469Multiple Airlines
Sat, Oct 17 - Tue, Oct 27
American Airlines Logo
8:15 pm - 11:25 amSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
14h 10m1 stop Chicago O'Hare Intl
American Airlines Logo
12:10 pm - 11:59 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 49m1 stop Chicago O'Hare Intl
$485American Airlines
Sat, Nov 7 - Sat, Nov 14
United Airlines Logo
8:00 am - 5:30 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
8:35 am - 7:41 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
12h 06m1 stop Chicago O'Hare Intl
$602United Airlines
Thu, Oct 22 - Sat, Oct 24
United Airlines Logo
6:00 am - 7:01 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
12h 01m1 stop Chicago O'Hare Intl
United Airlines Logo
8:35 am - 5:41 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
10h 06m1 stop Chicago O'Hare Intl
$602United Airlines
Thu, Oct 15 - Sat, Oct 17
United Airlines Logo
5:00 am - 6:57 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
12h 57m1 stop Chicago O'Hare Intl
United Airlines Logo
9:25 am - 4:59 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
8h 34m1 stop Chicago O'Hare Intl
$629United Airlines
Fri, Oct 30 - Sat, Oct 31
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
9:10 am - 3:26 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
7h 16m1 stop Toronto Pearson Intl
$755Air Canada
Sun, Nov 8 - Sun, Nov 15
Air Canada Logo
12:10 pm - 3:41 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
2h 31mnonstop
Air Canada Logo
4:55 pm - 6:41 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
2h 46mnonstop
$826Air Canada
Sat, Oct 17 - Wed, Oct 21
Air Canada Logo
12:10 pm - 3:41 pmSTL  Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl
2h 31mnonstop
Air Canada Logo
10:10 am - 2:00 pmYUL  Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis
4h 50m1 stop Toronto Pearson Intl
$839Air Canada
Thu, Oct 15 - Sat, Oct 17

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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
Oct 17
STL5:23 pmLambert-St Louis
17h 21m
1 stop
YUL11:44 amMontreal Pierre Elliott Trudeau Intl
Oct 28
YUL5:34 pmMontreal Pierre Elliott Trudeau Intl
18h 17m
1 stop
STL10:51 amLambert-St Louis
$458
American Airlines
Nov 7
STL8:15 pmLambert-St Louis
14h 10m
1 stop
YUL11:25 amMontreal Pierre Elliott Trudeau Intl
Nov 14
YUL12:10 pmMontreal Pierre Elliott Trudeau Intl
12h 49m
1 stop
STL11:59 pmLambert-St Louis
$485
American Airlines
Dec 1
STL5:29 pmLambert-St Louis
16h 56m
1 stop
YUL11:25 amMontreal Pierre Elliott Trudeau Intl
Dec 8
YUL12:10 pmMontreal Pierre Elliott Trudeau Intl
12h 49m
1 stop
STL11:59 pmLambert-St Louis
$486

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

Our best WestJet deals on St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
WestJet
Oct 9
STL5:31 pmLambert-St Louis
36h 34m
2 stops
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Oct 12
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
15h 51m
1 stop
STL8:51 pmLambert-St Louis
$849
WestJet
Oct 7
STL6:21 amLambert-St Louis
23h 44m
2 stops
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Oct 8
YUL2:28 pmMontreal Pierre Elliott Trudeau Intl
26h 11m
1 stop
STL3:39 pmLambert-St Louis
$898
WestJet
Oct 8
STL7:00 amLambert-St Louis
32h 30m
2 stops
YUL4:30 pmMontreal Pierre Elliott Trudeau Intl
Oct 10
YUL12:50 pmMontreal Pierre Elliott Trudeau Intl
9h 01m
1 stop
STL8:51 pmLambert-St Louis
$923

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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Price

Cheapest round-trip

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 10/17

5:23 pm-11:44 am

1 stop17h 21m

Montreal Pierre Elliott Trudeau Intl

Wed 10/28

5:34 pm-10:51 am

1 stop18h 17m

$458

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 10/17

5:23 pm-11:44 am

1 stop17h 21m

Montreal Pierre Elliott Trudeau Intl

Tue 10/27

5:34 pm-10:51 am

1 stop18h 17m

$458

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 10/17

7:42 pm-8:30 pm

3 stops23h 48m

Montreal Pierre Elliott Trudeau Intl

Tue 10/27

2:15 pm-5:40 pm

3 stops28h 25m

$469

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 11/7

8:15 pm-11:25 am

1 stop14h 10m

Montreal Pierre Elliott Trudeau Intl

Sat 11/14

12:10 pm-11:59 pm

1 stop12h 49m

$485

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Thu 10/22

8:00 am-5:30 pm

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 10/24

8:35 am-7:41 pm

1 stop12h 06m

$602

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Thu 10/15

6:00 am-7:01 pm

1 stop12h 01m

Montreal Pierre Elliott Trudeau Intl

Sat 10/17

8:35 am-5:41 pm

1 stop10h 06m

$602

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Fri 10/30

5:00 am-6:57 pm

1 stop12h 57m

Montreal Pierre Elliott Trudeau Intl

Sat 10/31

9:25 am-4:59 pm

1 stop8h 34m

$629

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sun 11/8

4:05 pm-11:25 pm

1 stop6h 20m

Montreal Pierre Elliott Trudeau Intl

Sun 11/15

9:10 am-3:26 pm

1 stop7h 16m

$755
Quickest round-trip

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 10/17

12:10 pm-3:41 pm

Nonstop2h 31m

Montreal Pierre Elliott Trudeau Intl

Wed 10/21

4:55 pm-6:41 pm

Nonstop2h 46m

$826

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Thu 10/15

12:10 pm-3:41 pm

Nonstop2h 31m

Montreal Pierre Elliott Trudeau Intl

Sat 10/17

10:10 am-2:00 pm

1 stop4h 50m

$839

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 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 $594 to $893.
The lowest price recently found on this route was $458.

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 $934. Flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport on a Friday will generally be more expensive and average around $1,205. 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 $1,129.

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?

No. A direct flight is the cheapest option for a flight between St. Louis to Montreal Pierre Elliott Trudeau Intl Airport.

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

$161

Fastest flight time

2h 31m

Direct flights

Mon, Tue, 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 $161. 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 $458.
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, Tuesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Air Canada.
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 31m.

  • 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
11,686 reviews
Search Air Canada flights
United AirlinesPriceFrom $296Free CancellationRating
7.4
10,247 reviews
Search United Airlines flights

  • United Airlines Flights From St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

    The lowest priced United Airlines flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport from the last 72 hours was $296. Generally, United Airlines has 14 flights on this route every week with an average price of $743. United Airlines is rated 7.4/10 by our users.

  • Air Canada Flights From St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

    $257 is the best Air Canada flight deal from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport found on momondo over the last 72 hours. The average Air Canada ticket price found was closer to $665, however, with flight time and availability significantly affecting the price. Air Canada (7.1/10 from 11,686 user reviews) flies into Montreal Pierre Elliott Trudeau Intl Airport from St. Louis 7 times in an average week so prices can vary.

Traveling to a place near Montreal?

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