Philadelphia to St Louis
PHLSTL
Fly from Philadelphia to St Louis starting at USD 184 with American Airlines.
Best fare available on Jun 7, 2026.
Limited seats. Better plans. Book before it's gone.
Philadelphia to St Louis cheapest flights this week
Philadelphia to St Louis monthly flight fare trend
May
from USD 96
Jun
from USD 184
Jul
No flights
Aug
No flights
Sep
No flights
Oct
No flights
Airport Details
Origin
Philadelphia
Philadelphia International Airport (PHL)
Philadelphia, PHL
Zone
New York
Elev
36 ft
Destination
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
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