St Louis to Denver
STLDEN
Fly from St Louis to Denver starting at USD 113 with Southwest Airlines.
Best fare available on Sep 1, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Denver cheapest flights this week
St Louis to Denver monthly flight fare trend
Aug
from USD 170
Sep
from USD 113
Oct
No flights
Nov
No flights
Dec
No flights
Jan
No flights
Airport Details
Origin
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
Destination
Denver
Denver International Airport (DEN)
Denver, DEN
Zone
Denver
Elev
5431 ft
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