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Cheap flights from Montreal to St. Louis from $333

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal to St. Louis departing on 12/9. 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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Find the cheapest flights from Montreal to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Montreal to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Montreal to St. Louis.

Cheap last minute flights

Planning a quick getaway from Montreal to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Montreal to St. Louis

Find recent round-trip train or bus tickets from Montreal to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
3:55 pm - 3:21 pmYUL-STL
24h 26m1 stop
8:34 pm - 4:35 pmSTL-YUL
19h 01m1 stop
Mon, Dec 9 - Mon, Dec 16
6:45 am - 11:27 pmYUL-STL
17h 42m1 stop
8:34 pm - 4:35 pmSTL-YUL
19h 01m1 stop
Thu, Jan 9 - Mon, Jan 13
6:00 am - 10:54 amYUL-STL
5h 54m1 stop
1:03 pm - 6:47 pmSTL-YUL
4h 44m1 stop
$486Air Canada
Find Deal
Sat, Feb 1 - Sun, Feb 23
5:35 pm - 7:55 pmYUL-STL
27h 20m3 stops
12:00 pm - 4:35 pmSTL-YUL
27h 35m3 stops
Thu, Jan 9 - Mon, Jan 13
5:15 pm - 4:53 pmYUL-STL
24h 38m1 stop
6:05 am - 4:22 pmSTL-YUL
9h 17m1 stop
$505Delta
Find Deal
Thu, Jan 9 - Mon, Jan 13
7:30 am - 12:50 pmYUL-STL
6h 20m1 stop
7:18 am - 4:50 pmSTL-YUL
8h 32m2 stops
$529American Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
7:14 am - 11:59 pmYUL-STL
17h 45m1 stop
11:00 am - 10:57 pmSTL-YUL
10h 57m2 stops
$539American Airlines
Find Deal
Mon, Dec 9 - Mon, Dec 16
10:59 am - 10:05 pmYUL-STL
12h 06m2 stops
11:00 am - 10:57 pmSTL-YUL
10h 57m2 stops
$564American Airlines
Find Deal
Mon, Dec 9 - Mon, Dec 16
9:15 am - 9:45 pmYUL-STL
13h 30m2 stops
11:20 am - 5:19 pmSTL-YUL
4h 59m1 stop
$577United Airlines
Find Deal
Sat, Feb 1 - Sun, Feb 23
9:15 am - 2:24 pmYUL-STL
6h 09m1 stop
7:00 am - 3:58 pmSTL-YUL
7h 58m1 stop
$621United Airlines
Find Deal
Tue, Dec 24 - Thu, Jan 2
8:15 am - 3:06 pmYUL-STL
7h 51m1 stop
$397Air Canada
Find Deal
Sat, Dec 21
6:15 pm - 10:47 amYUL-STL
17h 32m2 stops
$498United Airlines
Find Deal
Sat, Dec 21

United Airlines flights from Montreal to St. Louis

Our best United Airlines deals on Montreal to St. Louis flight tickets
United Airlines
Feb 1
YUL9:15 amMontreal Pierre Elliott Trudeau Intl
13h 30m
2 stops
STL9:45 pmLambert-St Louis
Feb 23
STL11:20 amLambert-St Louis
4h 59m
1 stop
YUL5:19 pmMontreal Pierre Elliott Trudeau Intl
United Airlines
Dec 24
YUL9:15 amMontreal Pierre Elliott Trudeau Intl
6h 09m
1 stop
STL2:24 pmLambert-St Louis
Jan 2
STL7:00 amLambert-St Louis
7h 58m
1 stop
YUL3:58 pmMontreal Pierre Elliott Trudeau Intl
United Airlines
Dec 24
YUL8:25 amMontreal Pierre Elliott Trudeau Intl
14h 20m
2 stops
STL9:45 pmLambert-St Louis
Jan 2
STL5:00 amLambert-St Louis
4h 32m
1 stop
YUL10:32 amMontreal Pierre Elliott Trudeau Intl

WestJet flights from Montreal to St. Louis

Our best WestJet deals on Montreal to St. Louis flight tickets
WestJet
Dec 16
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
5h 40m
1 stop
STL10:40 amLambert-St Louis
Dec 23
STL5:17 pmLambert-St Louis
30h 23m
2 stops
YUL12:40 amMontreal Pierre Elliott Trudeau Intl
WestJet
Dec 24
YUL6:30 pmMontreal Pierre Elliott Trudeau Intl
28h 36m
2 stops
STL10:06 pmLambert-St Louis
Jan 2
STL6:29 amLambert-St Louis
4h 26m
1 stop
YUL11:55 amMontreal Pierre Elliott Trudeau Intl
WestJet
Dec 24
YUL6:30 pmMontreal Pierre Elliott Trudeau Intl
28h 36m
2 stops
STL10:06 pmLambert-St Louis
Jan 2
STL5:17 pmLambert-St Louis
30h 23m
2 stops
YUL12:40 amMontreal Pierre Elliott Trudeau Intl

See travel insights to St. Louis from

How to get the cheapest flight ticket from Montreal 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 from Montreal to St. Louis?

January. The cheapest time of year to fly to St. Louis from Montreal is January. Most expensive is September

What is the cheapest day to depart Montreal for St. Louis?

Friday. The cheapest day of the week is typically Friday. The most expensive is typically Wednesday

When is the cheapest time to fly from Montreal to St. Louis?

In the morning. Montreal to St. Louis flights are approximately 25% more expensive in the evening than in the morning

What is the cheapest Montreal to St. Louis flight route?

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

What is the typical price of a round-trip flight between Montreal and St. Louis?


When to book flights from Montreal to St. Louis

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

Cheap Montreal to St. Louis (YMQ to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to St. Louis

Best Price Found

$397

Fastest flight time

5h 40m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Montreal in the past 72 hours is $397. The best round-trip flight deal from Montreal to St. Louis found on momondo in the last 72 hours is $333.
The fastest flight from Montreal to St. Louis takes 5h 40m
There are no direct flights from Montreal to St. Louis. Popular non-direct route for this connection is Montreal Pierre Elliott Trudeau Intl Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Montreal to Lambert-St Louis by plane?

    A flight from Montreal to Lambert-St Louis will travel around 973.0 mi. Typically, this will take 5h 40m by plane in normal conditions.

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

    Prices for flights from Montreal to Lambert-St Louis Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montreal 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 to St. Louis?

  • What is the most popular airline from Montreal to St. Louis?


Best airlines flying from Montreal to St. Louis

Compare and see reviews for airlines that fly from Montreal to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $285Free CancellationRating
7.0
8,237 reviews
Search Air Canada flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montreal to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Montreal to St. Louis flights to just show those with flexible booking policies.

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

Once all potential Montreal to St. Louis 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 Montreal to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Montreal and alert you when they change.


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