Phoenix to St Louis
PHXSTL
Fly from Phoenix to St Louis starting at USD 91 with F9.
Best fare available on Jun 16, 2026.
Limited seats. Better plans. Book before it's gone.
Phoenix to St Louis cheapest flights this week
16 Jun
F9
16:53PHX
17:23STL
1 Stop$91VIEW DEAL
Phoenix to St Louis monthly flight fare trend
May
No flights
Jun
from USD 91
Jul
No flights
Aug
No flights
Sep
No flights
Oct
No flights
Airport Details
Origin
Phoenix
Phoenix Sky Harbor International Airport (PHX)
Phoenix, PHX
Zone
Phoenix
Elev
1135 ft
Destination
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
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