Insights
Latest deals
Reviews
FAQs

Cheap flights from Montreal to St. Louis from $251

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 8/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
From?
To?
Fri 5/3
Fri 5/10

Deals available from 900+ travel sites.

"This year, momondo is the #1 place for airfares on the internet."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? Create a price alert to track prices.

Easily compare round-trip flights from Montreal to St. Louis

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Montreal to St. Louis by changing tabs
United Airlines
Aug 16
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
2h 35m
STL9:05 pmLambert-St Louis
Aug 21
STL6:02 amLambert-St Louis
6h 14m
1 stop
YUL1:16 pmMontreal Pierre Elliott Trudeau Intl
Delta
Jul 4
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
6h 19m
1 stop
STL12:19 pmLambert-St Louis
Jul 21
STL5:25 pmLambert-St Louis
5h 20m
1 stop
YUL11:45 pmMontreal Pierre Elliott Trudeau Intl
Multiple Airlines
Jul 4
YUL10:10 amMontreal Pierre Elliott Trudeau Intl
6h 11m
1 stop
STL3:21 pmLambert-St Louis
Jul 20
STL6:16 amLambert-St Louis
6h 00m
1 stop
YUL1:16 pmMontreal Pierre Elliott Trudeau Intl
Air Canada
Jul 5
YUL9:10 amMontreal Pierre Elliott Trudeau Intl
7h 11m
1 stop
STL3:21 pmLambert-St Louis
Jul 20
STL10:10 amLambert-St Louis
5h 08m
1 stop
YUL4:18 pmMontreal Pierre Elliott Trudeau Intl
WestJet
Jun 28
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
27h 05m
1 stop
STL9:10 amLambert-St Louis
Jun 30
STL6:06 amLambert-St Louis
16h 04m
1 stop
YUL11:10 pmMontreal Pierre Elliott Trudeau Intl
American Airlines
Jun 28
YUL10:43 amMontreal Pierre Elliott Trudeau Intl
24h 42m
2 stops
STL10:25 amLambert-St Louis
Jun 30
STL5:38 pmLambert-St Louis
21h 52m
2 stops
YUL4:30 pmMontreal Pierre Elliott Trudeau Intl

Find the cheapest one-way flights from Montreal to St. Louis

If you're looking for one-way flights from Montreal to St. Louis, view some of our deals below provided by Air Canada, Delta and United Airlines
United Airlines
Aug 7
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
2h 35m
STL9:05 pmLambert-St Louis
Air Canada
Jun 20
YUL9:10 amMontreal Pierre Elliott Trudeau Intl
7h 11m
1 stop
STL3:21 pmLambert-St Louis
Delta
Jun 21
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 30m
1 stop
STL2:30 pmLambert-St Louis

Search last-minute flights to St. Louis from Montreal

Find and compare round-trip flight prices for your last-minute flight from Montreal to St. Louis
WestJet
May 7
YUL6:46 pmMontreal Pierre Elliott Trudeau Intl
15h 19m
1 stop
STL9:05 amLambert-St Louis
May 8
STL12:53 pmLambert-St Louis
10h 06m
1 stop
YUL11:59 pmMontreal Pierre Elliott Trudeau Intl
Air Canada
May 7
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
2h 35m
STL9:05 pmLambert-St Louis
May 8
STL10:10 amLambert-St Louis
6h 10m
1 stop
YUL5:20 pmMontreal Pierre Elliott Trudeau Intl

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 $365Free CancellationRating
7.0
6,875 reviews
Search Air Canada flights
American AirlinesPriceFrom $388Free CancellationRating
7.3
14,844 reviews
Search American Airlines flights
DeltaPriceFrom $426Free CancellationRating
8.0
10,932 reviews
Search Delta flights

WestJet flights from Montreal to St. Louis

Our best WestJet deals on Montreal to St. Louis flight tickets
WestJet
Jun 28
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
27h 05m
1 stop
STL9:10 amLambert-St Louis
Jun 30
STL6:06 amLambert-St Louis
16h 04m
1 stop
YUL11:10 pmMontreal Pierre Elliott Trudeau Intl
WestJet
Jul 4
YUL5:00 pmMontreal Pierre Elliott Trudeau Intl
28h 29m
1 stop
STL8:29 pmLambert-St Louis
Jul 20
STL5:25 pmLambert-St Louis
36h 44m
2 stops
YUL7:09 amMontreal Pierre Elliott Trudeau Intl
WestJet
Jul 4
YUL8:20 amMontreal Pierre Elliott Trudeau Intl
25h 50m
2 stops
STL9:10 amLambert-St Louis
Jul 20
STL5:25 pmLambert-St Louis
36h 44m
2 stops
YUL7:09 amMontreal Pierre Elliott Trudeau Intl

Air Canada flights from Montreal to St. Louis

Our best Air Canada deals on Montreal to St. Louis flight tickets
Air Canada
Jul 5
YUL9:10 amMontreal Pierre Elliott Trudeau Intl
7h 11m
1 stop
STL3:21 pmLambert-St Louis
Jul 20
STL10:10 amLambert-St Louis
5h 08m
1 stop
YUL4:18 pmMontreal Pierre Elliott Trudeau Intl
Air Canada
Jul 4
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
2h 35m
STL9:05 pmLambert-St Louis
Jul 21
STL12:00 pmLambert-St Louis
2h 23m
YUL3:23 pmMontreal Pierre Elliott Trudeau Intl
Air Canada
Jul 4
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
2h 35m
STL9:05 pmLambert-St Louis
Jul 21
STL12:00 pmLambert-St Louis
2h 23m
YUL3:23 pmMontreal Pierre Elliott Trudeau Intl

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 July

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 31% more expensive in the afternoon than in the morning

What is the cheapest airline that flies to St. Louis from Montreal?

Delta. Air Canada, American Airlines, and Delta are the most popular carriers operating from Montreal to St. Louis

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

How far in advance should you book Montreal to St. Louis flights?

15 days before. The cheapest time to buy a flight from Montreal to St. Louis is approximately 15 days to departure

Can stopping save me money on Montreal to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Montreal to St. Louis.

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

$251

Fastest flight time

2h 35m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Montreal in the past 72 hours is $251. The best round-trip flight deal from Montreal to St. Louis found on momondo in the last 72 hours is $460.
The fastest flight from Montreal to St. Louis takes 2h 35m
Direct flights go from Montreal to St. Louis on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: United Airlines and Air Canada.
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 2h 35m 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.


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.


An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Fri 5/3
Fri 5/10
Email me momondo's favorite deals

Find better results for your stay in the United States