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

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly

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 $631 round trip and CA $327 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Jan 21 - Wed, Feb 4
YUL
Montreal
STL
St. Louis
CA $631 Roundtrip, found 2 days ago
CA $631
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jan 21 from Montreal to St. Louis, returning Wed, Feb 4, priced at CA $631 found 2 days ago
Wed, Jan 21 - Wed, Feb 4
YUL
Montreal
STL
St. Louis
CA $652 Roundtrip, found 2 days ago
CA $652
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 21 from Montreal to St. Louis, returning Wed, Feb 4, priced at CA $652 found 2 days ago
Wed, Jan 21 - Wed, Feb 4
YUL
Montreal
STL
St. Louis
CA $683 Roundtrip, found 2 days ago
CA $683
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 21 from Montreal to St. Louis, returning Wed, Feb 4, priced at CA $683 found 2 days ago
Wed, Jan 21 - Wed, Feb 4
YUL
Montreal
STL
St. Louis
CA $712 Roundtrip, found 2 days ago
CA $712
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 21 from Montreal to St. Louis, returning Wed, Feb 4, priced at CA $712 found 2 days ago
Wed, Jan 21 - Wed, Feb 4
YUL
Montreal
STL
St. Louis
CA $743 Roundtrip, found 2 days ago
CA $743
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 21 from Montreal to St. Louis, returning Wed, Feb 4, priced at CA $743 found 2 days ago
Wed, Jan 21 - Wed, Feb 4
YUL
Montreal
STL
St. Louis
CA $743 Roundtrip, found 2 days ago
CA $743
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 21 from Montreal to St. Louis, returning Wed, Feb 4, priced at CA $743 found 2 days ago
Fri, May 22 - Mon, May 25
YUL
Montreal
STL
St. Louis
CA $772 Roundtrip, found 3 days ago
CA $772
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, May 22 from Montreal to St. Louis, returning Mon, May 25, priced at CA $772 found 3 days ago
Tue, Jun 16 - Tue, Jun 23
YUL
Montreal
STL
St. Louis
CA $773 Roundtrip, found 5 days ago
CA $773
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Jun 16 from Montreal to St. Louis, returning Tue, Jun 23, priced at CA $773 found 5 days ago
Wed, Jan 21 - Wed, Feb 4
YUL
Montreal
STL
St. Louis
CA $774 Roundtrip, found 2 days ago
CA $774
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 21 from Montreal to St. Louis, returning Wed, Feb 4, priced at CA $774 found 2 days ago
Wed, Jan 21 - Wed, Feb 4
YUL
Montreal
STL
St. Louis
CA $784 Roundtrip, found 2 days ago
CA $784
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 21 from Montreal to St. Louis, returning Wed, Feb 4, priced at CA $784 found 2 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.