Popular airlines from Pittsburgh International Airport (PIT) to Lambert-St. Louis International Airport (STL)
American AirlinesAmerican Airlines
DeltaDelta
UnitedUnited
Southwest AirlinesSouthwest Airlines
Frontier AirlinesFrontier Airlines
Alaska AirlinesAlaska Airlines
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Cheap flights from Pittsburgh (PIT) to St. Louis (STL)
Prices were available within the past 7 days and start at CA $284 for one-way flights and CA $438 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Find the cheapest month to fly from Pittsburgh (PIT) to St. Louis (STL)
September is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | Pittsburgh Intl. |
Destination airport | Lambert-St. Louis Intl. |
Roundtrip price | CA $438 |
Distance | 881 km |
Pittsburgh to St. Louis Flights
The easy way to book your flights from Pittsburgh to St. Louis
With Expedia, it’s simple to find and book flights to St. Louis from Pittsburgh whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are Southwest Airlines nonstop flights to Lambert-St. Louis Intl., too.
Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Pittsburgh to St. Louis today, tomorrow, or this week.
Save dollars with cheap flights from Pittsburgh Intl., PIT to Lambert-St. Louis Intl., STL
Sort your search results by price to find great deals on your flight from Pittsburgh to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Pittsburgh currently is just CA $438 rising to CA $577.
Here are more money-saving tips:
- Fly in August when flight prices are normally at their lowest
- Book about a month to 6 weeks before you travel for the best prices to St. Louis
- Avoid peak season and weekends when flights can cost more
- Early morning and late-night flights are sometimes cheaper, so try varying your travel times
- One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!
Reasons to choose Expedia for your flight to St. Louis from Pittsburgh
Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.
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Top Routes from Pittsburgh
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Top Routes to St. Louis
- Ottawa to St. Louis (YOW - STL)
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- Winnipeg to St. Louis (YWG - STL)
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- Québec to St. Louis (YQB - STL)
- Seattle to St. Louis (SEA - STL)
- Montreal to St. Louis (YUL - STL)
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