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STL
Saint Louis
PHL
Philadelphia
Saint Louis → Philadelphia
Southwest Airlines · Round Trip · Nonstop
Save $196 (29% off)
Compared to the typical price of $686
$516$686
per person · round trip
Flight Details
Cabin
Economy
Departs
Jun 26, 2026
Returns
Jul 5, 2026
Price History
Avg: $498
Low: $489
High: $516
Mar 23Mar 29
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