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Cheap flights from St Louis (STL) to Philadelphia (PHL)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Philadelphia (PHL)

How to find the cheapest flight from St Louis (STL) to Philadelphia (PHL)
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How to find the cheapest flight from St Louis (STL) to Philadelphia (PHL)
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How to find the cheapest flight from St Louis (STL) to Philadelphia (PHL)
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Cheap flights from St Louis to Philadelphia in April , May 2025

29 Apr - 03 May $ 587.00
STL
St Louis
United Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
United Airlines
1 STOPS
STL
St Louis
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30 Apr - 07 May $ 592.00
STL
St Louis
United Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
United Airlines
1 STOPS
STL
St Louis
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29 Apr - 06 May $ 592.00
STL
St Louis
United Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
United Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Philadelphia

28 Apr - 30 Apr $ 627.00
STL
St Louis
United Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
United Airlines
1 STOPS
STL
St Louis
Pick dates
23 Apr - 30 Apr $ 845.00
STL
St Louis
United Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
United Airlines
1 STOPS
STL
St Louis
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23 Apr - 30 Apr $ 931.00
STL
St Louis
United Airlines
1 STOPS
PHL
Philadelphia
PHL
Philadelphia
United Airlines
1 STOPS
STL
St Louis
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One-way flights to Philadelphia from St Louis

8:25 AM - 1:00 PM
United Airlines
1 Stops
4h 45m
STL - PHL
$ 294
Kiwi
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8:48 AM - 5:59 PM
United Airlines
1 Stops
13h 47m
STL - PHL
$ 388
Kiwi
Pick dates
8:25 AM - 1:00 PM
United Airlines
1 Stops
4h 45m
STL - PHL
$ 427
Kiwi
Pick dates

How to find the cheapest flight from St Louis (STL) to Philadelphia (PHL)

Related info for your journey
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How to find the cheapest flight from St Louis (STL) to Philadelphia (PHL)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Philadelphia (PHL)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.