Philadelphia to St Louis
PHLSTL
Fly from Philadelphia to St Louis starting at USD 96 with F9.
Best fare available on Apr 30, 2026.
Limited seats. Better plans. Book before it's gone.
Philadelphia to St Louis cheapest flights this week
24 Apr
F9
16:42PHL
--:--STL
1 Stop$111VIEW DEAL
30 Apr
F9
16:42PHL
--:--STL
1 Stop$96VIEW DEAL
Philadelphia to St Louis monthly flight fare trend
Apr
from USD 96
May
No flights
Jun
No flights
Jul
No flights
Aug
No flights
Sep
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
