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Flights from St. Louis to Philadelphia
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Find cheap one-way flights from St. Louis to Philadelphia starting at US$34.
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
- One way
- Round-trip
- STL08:472h 14mDirectPHL12:01Wed, May 22|St. Louis - Philadelphia|Frontier AirlinesUS$34US$6347% OFF47% OFFUS$63US$34
- STL08:472h 14mDirectPHL12:01Wed, May 29|St. Louis - Philadelphia|Frontier AirlinesUS$37US$6342% OFF42% OFFUS$63US$37
- STL15:322h 13mDirectPHL18:45Wed, Jun 12|St. Louis - Philadelphia|Frontier AirlinesUS$38US$6340% OFF40% OFFUS$63US$38
- STL22:362h 14mDirectPHL01:50Wed, Jun 5|St. Louis - Philadelphia|Frontier AirlinesUS$38US$38
- STL11:472h 13mDirectPHL15:00Sat, Jun 8|St. Louis - Philadelphia|Frontier AirlinesUS$40US$40
- STL20:048h 30m1 stopPHL05:34Sat, May 18|St. Louis - Philadelphia|Frontier AirlinesUS$48US$48
- STL19:2310h 16m1 stopPHL06:39Thu, May 16|St. Louis - Philadelphia|Frontier AirlinesUS$49US$49
- STL20:048h 41m1 stopPHL05:45Sat, Apr 27|St. Louis - Philadelphia|Frontier AirlinesUS$49US$49
- STL20:048h 41m1 stopPHL05:45Sat, May 4|St. Louis - Philadelphia|Frontier AirlinesUS$51US$51
- STL21:538h 50m1 stopTTN07:43Wed, May 8|St. Louis - Philadelphia|Frontier AirlinesUS$51US$51
- STL13:003h 5mDirectPHL14:00Thu, May 2|St. Louis - Philadelphia|Frontier AirlinesFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from St. Louis to Philadelphia
Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Frontier Airlines
From US$34
American Airlines
From US$78
Delta Air Lines
From US$89
Sun Country Airlines
From US$93
United Airlines
From US$105
Spirit Airlines
From US$110
Southern Airways Express
From US$148
Southwest Airlines
From US$164
Alaska Airlines
From US$216
ANA airlines
Find more flights and airlines
Find cheap flights from St. Louis to Philadelphia by different airports
Searching for potential routes that might be cheaper and faster? Check out these alternative flights from St. Louis to Philadelphia.
- CheapestSTL08:472h 14mDirectPHL12:01St. Louis Lambert International Airport - Philadelphia International AirportWed, May 22Frontier AirlinesUS$34
- STL21:538h 50m1 transferTTN07:43St. Louis Lambert International Airport - Trenton Mercer AirportWed, May 8Frontier AirlinesUS$51
- STL21:538h 50m1 transferTTN07:43St. Louis Lambert International Airport - Trenton Mercer AirportWed, May 8Frontier AirlinesUS$51Find More Flights
Frequently Asked Questions
How to find a cheap flight from St. Louis to Philadelphia
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St. Louis to Philadelphia Flight Information
Cheapest nonstop flight price | $33 |
---|---|
Cheapest round-trip ticket price | $75 |
Off-season for travel | May |
Peak season for travel | July |
Flight distance | 1,293.47km |
Average flight time | 2 hours 12 minutes |
Popular airline | American Airlines |
Plan Your Trip Around Philadelphia
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