Cheap Flights From Pierre Elliott Trudeau Intl. (YUL) To Lambert-St. Louis Intl. (STL)

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

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were CA $617 round trip and CA $399 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Dec 10 - Sat, Dec 13
YUL
Montreal
STL
St. Louis
CA $617 Roundtrip, found 5 days ago
CA $617
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Dec 10 from Montreal to St. Louis, returning Sat, Dec 13, priced at CA $617 found 5 days ago
Tue, Dec 2 - Tue, Dec 9
YUL
Montreal
STL
St. Louis
CA $714 Roundtrip, found 11 hours ago
CA $714
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Dec 2 from Montreal to St. Louis, returning Tue, Dec 9, priced at CA $714 found 11 hours ago
Tue, Dec 2 - Tue, Dec 9
YUL
Montreal
STL
St. Louis
CA $717 Roundtrip, found 11 hours ago
CA $717
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Tue, Dec 2 from Montreal to St. Louis, returning Tue, Dec 9, priced at CA $717 found 11 hours ago
Tue, Dec 2 - Tue, Dec 9
YUL
Montreal
STL
St. Louis
CA $726 Roundtrip, found 11 hours ago
CA $726
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Dec 2 from Montreal to St. Louis, returning Tue, Dec 9, priced at CA $726 found 11 hours ago
Tue, Nov 25 - Tue, Dec 2
YUL
Montreal
STL
St. Louis
CA $728 Roundtrip, found 2 days ago
CA $728
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Nov 25 from Montreal to St. Louis, returning Tue, Dec 2, priced at CA $728 found 2 days ago
Wed, Nov 26 - Fri, Nov 28
YUL
Montreal
STL
St. Louis
CA $735 Roundtrip, found 5 days ago
CA $735
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Nov 26 from Montreal to St. Louis, returning Fri, Nov 28, priced at CA $735 found 5 days ago
Wed, Dec 10 - Sat, Dec 13
YUL
Montreal
STL
St. Louis
CA $744 Roundtrip, found 5 days ago
CA $744
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Dec 10 from Montreal to St. Louis, returning Sat, Dec 13, priced at CA $744 found 5 days ago
Wed, Dec 10 - Sat, Dec 13
YUL
Montreal
STL
St. Louis
CA $747 Roundtrip, found 5 days ago
CA $747
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Dec 10 from Montreal to St. Louis, returning Sat, Dec 13, priced at CA $747 found 5 days ago
Tue, Dec 2 - Tue, Dec 9
YUL
Montreal
STL
St. Louis
CA $749 Roundtrip, found 11 hours ago
CA $749
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Dec 2 from Montreal to St. Louis, returning Tue, Dec 9, priced at CA $749 found 11 hours ago
Wed, Nov 26 - Fri, Nov 28
YUL
Montreal
STL
St. Louis
CA $756 Roundtrip, found 5 days ago
CA $756
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Nov 26 from Montreal to St. Louis, returning Fri, Nov 28, priced at CA $756 found 5 days ago

Frequently asked questions

Are there direct flights from Montreal Airport to Lambert Field?
If you'd prefer to travel quickly from Montreal Airport to Lambert Field, have a look at United Airlines, Air Canada and American Airlines. No airlines provide direct flights on this route, so you'll have to make at least one stopover.
What airlines fly from YUL to Lambert Field?
Unfortunately, there are no airlines currently offering direct flights between Montreal Airport and St. Louis Lambert International Airport. It's in your best interest to plan well in advance to find the ideal price and route.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Montreal (YUL)

Travelers at YUL love to visit these top cities. Roam to the top destinations from Montreal (YUL) today with the cheap prices from Travelocity!

Popular Flight Routes from St. Louis (STL)

Travelers at STL love to visit these top cities. Roam to the top destinations from St. Louis(STL) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.