Cheap Flights from Philadelphia (PHL) to St. Louis (STL)

Based on fares available within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from PHL to St. Louis Lambert International Airport start from . Make your booking ASAP to secure the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.

The majority of flights can be conveniently cancelled online, but whether or not you incur a fee varies between airlines. If you do have to cancel your break, follow the instructions in the Customer Service Portal.

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 PHL to STL flights, you’ll see a “no change fees” filter for you to select.

The flight distance from PHL (PHL) to Lambert-St. Louis Intl. Airport (STL) (STL) is 1,300 kilometres. You’ll be disembarking the plane and grabbing your baggage from the carousel before long.

With 56 monthly flights operating from Philadelphia Airport to STL, Southwest Airlines (WN) is a popular choice. You could also take a look at the fares on offer with American Airlines (AA). It operates 30 monthly flights between Philadelphia and St. Louis.

Flight prices go up and down like a yo-yo, so it’s no sure thing. While last-minute deals between Philadelphia Intl. Airport (PHL) and STL are possible, it’s also a good idea to keep track of prices well before you fly. In fact, some air carriers release their prices up to 12 months prior to the departure date. Expedia is continuously updating the best airfare bargains around, so check back often and be ready to lock in your seat when the price is right.