St Louis to Phoenix
STLPHX
Fly from St Louis to Phoenix starting at USD 182 with Southwest Airlines.
Best fare available on May 28, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Phoenix cheapest flights this week
St Louis to Phoenix monthly flight fare trend
May
from USD 130
Jun
No flights
Jul
No flights
Aug
No flights
Sep
No flights
Oct
No flights
Airport Details
Origin
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
Destination
Phoenix
Phoenix Sky Harbor International Airport (PHX)
Phoenix, PHX
Zone
Phoenix
Elev
1135 ft
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