Philadelphia to St. Louis - Flights Starting at US$22
Book one-way or return flights from Philadelphia to St. Louis from as little as US$22. Choose from the popular airlines below and book your flight today!
- One way
- Round-trip
- PHL06:302h 27mDirectSTL07:57Wed, May 22|Philadelphia - St. Louis|Frontier AirlinesUS$22US$6466% OFF66% OFFUS$64US$22
- PHL06:302h 27mDirectSTL07:57Wed, May 29|Philadelphia - St. Louis|Frontier AirlinesUS$27US$6457% OFF57% OFFUS$64US$27
- PHL06:302h 27mDirectSTL07:57Sat, May 25|Philadelphia - St. Louis|Frontier AirlinesUS$27US$6457% OFF57% OFFUS$64US$27
- PHL06:302h 27mDirectSTL07:57Sat, Jun 1|Philadelphia - St. Louis|Frontier AirlinesUS$38US$38
- PHL12:512h 27mDirectSTL14:18Sat, Jun 29|Philadelphia - St. Louis|Frontier AirlinesUS$38US$38
- PHL09:172h 30mDirectSTL10:47Sat, Jun 8|Philadelphia - St. Louis|Frontier AirlinesUS$38US$38
- PHL12:512h 27mDirectSTL14:18Sat, Jun 15|Philadelphia - St. Louis|Frontier AirlinesUS$40US$40
- PHL12:512h 27mDirectSTL14:18Sat, Jun 22|Philadelphia - St. Louis|Frontier AirlinesUS$40US$40
- PHL20:192h 27mDirectSTL21:46Wed, Jun 26|Philadelphia - St. Louis|Frontier AirlinesUS$41US$41
- PHL20:192h 27mDirectSTL21:46Wed, Jun 5|Philadelphia - St. Louis|Frontier AirlinesUS$41US$41
- PHL13:003h 5mDirectSTL14:00Mon, May 13|Philadelphia - St. Louis|Frontier AirlinesFind More FlightsFind More Flights
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Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Philadelphia to St. Louis.
- CheapestPHL06:302h 27mDirectSTL07:57Philadelphia International Airport - St. Louis Lambert International AirportWed, May 22Frontier AirlinesUS$22
- TTN18:3913h 29m1 transferSTL07:08Trenton Mercer Airport - St. Louis Lambert International AirportSat, May 18Frontier AirlinesUS$56
- TTN18:3913h 29m1 transferSTL07:08Trenton Mercer Airport - St. Louis Lambert International AirportSat, May 18Frontier AirlinesUS$56Find More Flights
Frequently Asked Questions
How to find a cheap flight from Philadelphia to St. Louis
Cheapest nonstop flight price | $21 |
---|---|
Cheapest round-trip ticket price | $56 |
Off-season for travel | May |
Peak season for travel | July |
Flight distance | 1,293.47km |
Average flight time | 2 hours 35 minutes |
Popular airline | American Airlines |
Plan Your Trip Around St. Louis
More Travel Options | Philadelphia to St. Louis
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