Houston to St Louis

IAHSTL

Fly from Houston to St Louis starting at USD 78 with Frontier Airlines.Best fare available on Sep 9, 2026.Limited seats. Better plans. Book before it's gone.

Houston to St Louis cheapest flights this week

9 Sept
Frontier Airlines
21:04IAH
13:10STL
1 StopUSD 78VIEW DEAL
11 Sept
Frontier Airlines
06:08IAH
13:10STL
1 StopUSD 165VIEW DEAL
17 Sept
Frontier Airlines
20:44IAH
09:40STL
1 StopUSD 102VIEW DEAL
18 Sept
Frontier Airlines
13:35IAH
09:40STL
1 StopUSD 96VIEW DEAL
19 Sept
Frontier Airlines
20:44IAH
09:40STL
1 StopUSD 90VIEW DEAL
22 Sept
Frontier Airlines
20:44IAH
09:40STL
1 StopUSD 90VIEW DEAL
1 Oct
Frontier Airlines
06:08IAH
13:10STL
1 StopUSD 89VIEW DEAL
8 Oct
United Airlines
11:58IAH
14:10STL
DirectUSD 125VIEW DEAL

Houston to St Louis monthly flight fare trend

Sep
from USD 78
Oct
from USD 89
Nov
No flights
Dec
No flights
Jan
No flights
Feb
No flights

Airport Details

Origin

Houston

George Bush Intercontinental Houston Airport (IAH)

Houston, IAH
Zone

Chicago

Elev

97 ft

Destination

St Louis

St. Louis Lambert International Airport (STL)

St Louis, STL
Zone

Chicago

Elev

618 ft

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