Cheap Flights From Pittsburgh Intl. (PIT) To Lambert-St. Louis Intl. (STL)

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Cheapest Flights from Pittsburgh (PIT) to St. Louis (STL)

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were CA $544 round trip and CA $348 one way. Prices and availability subject to change. Additional terms may apply.

Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $544 Roundtrip, found 1 day ago
CA $544
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $544 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $549 Roundtrip, found 1 day ago
CA $549
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $549 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $584 Roundtrip, found 1 day ago
CA $584
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $584 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $591 Roundtrip, found 1 day ago
CA $591
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $591 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $638 Roundtrip, found 1 day ago
CA $638
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $638 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $645 Roundtrip, found 1 day ago
CA $645
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $645 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $647 Roundtrip, found 1 day ago
CA $647
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $647 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $654 Roundtrip, found 1 day ago
CA $654
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $654 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $721 Roundtrip, found 1 day ago
CA $721
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $721 found 1 day ago
Mon., Jun. 23 - Wed., Jul. 16
PIT
Pittsburgh
STL
St. Louis
CA $729 Roundtrip, found 1 day ago
CA $729
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon., Jun. 23 from Pittsburgh to St. Louis, returning Wed., Jul. 16, priced at CA $729 found 1 day ago

Frequently asked questions

Are there direct flights from PIT to STL?
The only thing separating you and your next incredible adventure is a single flight. Southwest Airlines is the only carrier that operates direct services between Pittsburgh Intl. Airport (PIT) and Lambert Field, so it's wise to book well ahead of your departure.
What airlines fly from PIT to Lambert-St. Louis Intl. Airport (STL)?
Ready to take off on your next grand adventure? Want to get from PIT to Lambert Field in the shortest possible time? Step aboard one of the 30 nonstop flights offered by Southwest Airlines every month, and you'll be touching down before you can utter 'Are we there yet?'
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 Pittsburgh (PIT)

Travelers at PIT love to visit these top cities. Roam to the top destinations from Pittsburgh (PIT) 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.