Denver to St Louis

DENSTL

Fly from Denver to St Louis starting at SAR 155 with Frontier Airlines.Best fare available on Sep 30, 2026.Limited seats. Better plans. Book before it's gone.

Denver to St Louis cheapest flights this week

3 Sept
Southwest Airlines
18:50DEN
21:00STL
DirectSAR 603VIEW DEAL
9 Sept
Frontier Airlines
16:12DEN
18:17STL
DirectSAR 525VIEW DEAL
30 Sept
Frontier Airlines
16:12DEN
18:17STL
DirectSAR 155VIEW DEAL
12 Oct
Frontier Airlines
16:12DEN
18:15STL
DirectSAR 226VIEW DEAL

Denver to St Louis monthly flight fare trend

Sep
from SAR 155
Oct
from SAR 226
Nov
No flights
Dec
No flights
Jan
No flights
Feb
No flights

Airport Details

Origin

Denver

Denver International Airport (DEN)

Denver, DEN
Zone

Denver

Elev

5431 ft

Destination

St Louis

St. Louis Lambert International Airport (STL)

St Louis, STL
Zone

Chicago

Elev

618 ft

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