£251 Cheap Flights from Montreal (YUL) to St. Louis (STL)

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Cheap Flights from Montreal (YUL) to St. Louis (STL)

Prices were available within the past 7 days and start at £251 for one-way flights and £455 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

WestJet
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£455 Return, found 4 days ago
£455
Return
found 4 days ago
Select WestJet flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £455 found 4 days ago
WestJet
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£461 Return, found 4 days ago
£461
Return
found 4 days ago
Select WestJet flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £461 found 4 days ago
WestJet
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£475 Return, found 4 days ago
£475
Return
found 4 days ago
Select WestJet flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £475 found 4 days ago
Air Canada
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£487 Return, found 4 days ago
£487
Return
found 4 days ago
Select Air Canada flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £487 found 4 days ago
WestJet
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£494 Return, found 4 days ago
£494
Return
found 4 days ago
Select WestJet flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £494 found 4 days ago
Air Canada
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£498 Return, found 4 days ago
£498
Return
found 4 days ago
Select Air Canada flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £498 found 4 days ago
WestJet
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£499 Return, found 4 days ago
£499
Return
found 4 days ago
Select WestJet flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £499 found 4 days ago
Air Canada
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£502 Return, found 4 days ago
£502
Return
found 4 days ago
Select Air Canada flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £502 found 4 days ago
Air Canada
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£506 Return, found 4 days ago
£506
Return
found 4 days ago
Select Air Canada flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £506 found 4 days ago
WestJet
Sun, 19 May - Wed, 22 May
YUL
Montreal
STL
St. Louis
£511 Return, found 4 days ago
£511
Return
found 4 days ago
Select WestJet flight, departing Sun, 19 May from Montreal to St. Louis, returning Wed, 22 May, priced at £511 found 4 days ago
Flight from Montreal to St. Louis route information
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Lambert-St. Louis Intl.
Return price
£455
Distance
1547 km

Compare flights from Montreal to St. Louis easily and book in confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Montreal to St. Louis. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Lambert-St. Louis Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Pierre Elliott Trudeau Intl. to Lambert-St. Louis Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Pierre Elliott Trudeau Intl. (YUL) to Lambert-St. Louis Intl. (STL) 

The easiest way to view the best deals on flights from Montreal to St. Louis today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Pierre Elliott Trudeau Intl. to Lambert-St. Louis Intl. start at just £455 and range up to £511.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Montreal and St. Louis
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Montreal to St. Louis flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Pierre Elliott Trudeau Intl. to Lambert-St. Louis Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Montréal--Trudeau to Lambert-St. Louis Intl. Airport (STL)?
If you’re planning on travelling from YUL to STL, round-trip flights start from £455. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don’t let a good deal slip through your fingers. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from YUL to St. Louis Lambert International Airport?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Montreal Airport to St. Louis Lambert International Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Montreal Airport to Lambert Field flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Lambert-St. Louis Intl. Airport (STL)?
Expect to be soaring through the sky for a while, as the flight distance from Pierre Elliott Trudeau Intl. Airport (YUL) to STL is 1,550 kilometres. Set up a playlist of your favourite tunes before leaving home to keep yourself entertained during the journey.
Which airlines fly direct from Pierre Elliott Trudeau Intl. Airport (YUL) to STL?
Unfortunately, there aren’t any airlines that directly fly between YUL and Lambert-St. Louis Intl. Airport (STL). You’ll need to book a flight with one or more stops.
Are YUL to Lambert Field flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Pierre Elliott Trudeau Intl. Airport (YUL) to STL at the last minute could be your ticket to a cheap deal. However, it could end up costing a good deal more! If you’d rather avoid the risk, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred carrier hasn’t released tickets yet, check back regularly as deals are updated on Expedia all the time.
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