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Cheap flights from Montreal to St. Louis from $173

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal to St. Louis departing on 1/13. 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.
6:30 am - 2:43 pmYUL-STL
9h 13m1 stop
3:48 pm - 12:45 amSTL-YUL
7h 57m1 stop
Tue, Feb 4 - Tue, Feb 11
6:45 am - 11:31 pmYUL-STL
17h 46m1 stop
7:09 pm - 4:35 pmSTL-YUL
20h 26m2 stops
Thu, Jan 16 - Mon, Jan 20
6:45 am - 11:31 pmYUL-STL
17h 46m1 stop
8:31 pm - 4:35 pmSTL-YUL
19h 04m1 stop
Thu, Jan 16 - Mon, Jan 20
3:55 pm - 12:10 pmYUL-STL
21h 15m3 stops
3:48 pm - 12:45 amSTL-YUL
7h 57m1 stop
Tue, Feb 4 - Tue, Feb 11
12:48 pm - 4:54 pmYUL-STL
5h 06m1 stop
1:35 pm - 10:29 amSTL-YUL
19h 54m1 stop
$431Delta
Find Deal
Sat, Jan 11 - Sat, Jan 18
10:54 am - 8:09 pmYUL-STL
10h 15m1 stop
5:03 pm - 10:10 amSTL-YUL
16h 07m1 stop
$461American Airlines
Find Deal
Wed, Jan 15 - Fri, Jan 17
10:54 am - 10:09 pmYUL-STL
12h 15m2 stops
6:00 am - 4:50 pmSTL-YUL
9h 50m2 stops
$468American Airlines
Find Deal
Thu, Jan 16 - Mon, Jan 20
7:00 am - 3:38 pmYUL-STL
9h 38m2 stops
6:50 am - 3:58 pmSTL-YUL
8h 08m1 stop
$532United Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
11:08 am - 8:02 pmYUL-STL
9h 54m2 stops
9:44 am - 9:42 pmSTL-YUL
10h 58m2 stops
$578United Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
10:15 am - 3:06 pmYUL-STL
5h 51m1 stop
3:50 pm - 7:55 amSTL-YUL
15h 05m1 stop
$674Air Canada
Find Deal
Mon, Jan 6 - Sun, Jan 12
6:35 pm - 2:43 pmYUL-STL
21h 08m1 stop
Mon, Jan 13
2:35 pm - 2:43 pmYUL-STL
25h 08m3 stops
Mon, Jan 13
10:00 am - 11:27 pmYUL-STL
14h 27m2 stops
Mon, Jan 13
6:45 am - 7:58 amYUL-STL
26h 13m2 stops
Wed, Mar 19
6:50 am - 11:45 amYUL-STL
29h 55m3 stops
Wed, Mar 19
7:00 am - 3:43 pmYUL-STL
9h 43m1 stop
$295Delta
Find Deal
Wed, Mar 19

American Airlines flights from Montreal to St. Louis

Our best American Airlines deals on Montreal to St. Louis flight tickets
American Airlines
Jan 15
YUL10:54 amMontreal Pierre Elliott Trudeau Intl
10h 15m
1 stop
STL8:09 pmLambert-St Louis
Jan 17
STL5:03 pmLambert-St Louis
16h 07m
1 stop
YUL10:10 amMontreal Pierre Elliott Trudeau Intl
American Airlines
Jan 16
YUL10:54 amMontreal Pierre Elliott Trudeau Intl
12h 15m
2 stops
STL10:09 pmLambert-St Louis
Jan 20
STL6:00 amLambert-St Louis
9h 50m
2 stops
YUL4:50 pmMontreal Pierre Elliott Trudeau Intl
American Airlines
Jan 15
YUL10:54 amMontreal Pierre Elliott Trudeau Intl
12h 15m
2 stops
STL10:09 pmLambert-St Louis
Jan 17
STL5:03 pmLambert-St Louis
16h 07m
1 stop
YUL10:10 amMontreal Pierre Elliott Trudeau Intl

United Airlines flights from Montreal to St. Louis

Our best United Airlines deals on Montreal to St. Louis flight tickets
United Airlines
Jan 11
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
9h 38m
2 stops
STL3:38 pmLambert-St Louis
Jan 18
STL6:50 amLambert-St Louis
8h 08m
1 stop
YUL3:58 pmMontreal Pierre Elliott Trudeau Intl
United Airlines
Jan 11
YUL11:08 amMontreal Pierre Elliott Trudeau Intl
9h 54m
2 stops
STL8:02 pmLambert-St Louis
Jan 18
STL9:44 amLambert-St Louis
10h 58m
2 stops
YUL9:42 pmMontreal Pierre Elliott Trudeau Intl
United Airlines
Apr 23
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
9h 42m
2 stops
STL2:42 pmLambert-St Louis
Apr 27
STL9:39 amLambert-St Louis
6h 47m
1 stop
YUL5:26 pmMontreal 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 to St. Louis?

In general, April is the cheapest month to fly from Montreal to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $399. The month of July is another great option to travel to St. Louis, with average flight prices from Montreal averaging around $443.

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 Friday when prices can be found for as low as $425. 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 Tuesday because tickets tend to average around $549. 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 time of day to depart on your flight to St. Louis?

Flying to St. Louis from Montreal in the morning is the least expensive time of day to depart. momondo users have found prices as low as $453 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $602 per ticket.

What is the cheapest Montreal to Lambert-St Louis flight route?

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

What cabin class options are available on Montreal to Lambert-St Louis flights?

There are 1 cabin classes available to choose from on Montreal to Lambert-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 to St. Louis flights?

You could potentially save up to 12% on your flight if you consider stops on a Montreal to St. Louis flight.

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

$173

Fastest flight time

5h 06m

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 $173. The best round-trip flight deal from Montreal to St. Louis found on momondo in the last 72 hours is $362.
The fastest flight from Montreal to St. Louis takes 5h 06m
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 06m 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
8,413 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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