St Louis to Houston

STLIAH

Fly from St Louis to Houston starting at USD 92 with Frontier Airlines.Best fare available on Sep 7, 2026.Limited seats. Better plans. Book before it's gone.

St Louis to Houston cheapest flights this week

10 Jul
Frontier Airlines
16:57STL
22:39IAH
1 StopUSD 222VIEW DEAL
5 Sept
Southwest Airlines
08:30STL
22:14IAH
1 StopUSD 115VIEW DEAL
6 Sept
Frontier Airlines
18:17STL
07:20IAH
1 StopUSD 97VIEW DEAL
7 Sept
Frontier Airlines
18:17STL
07:20IAH
1 StopUSD 92VIEW DEAL
8 Sept
Frontier Airlines
18:45STL
21:04IAH
1 StopUSD 133VIEW DEAL
17 Sept
Frontier Airlines
10:35STL
22:06IAH
1 StopUSD 97VIEW DEAL

St Louis to Houston monthly flight fare trend

Jul
from USD 222
Aug
No flights
Sep
from USD 92
Oct
No flights
Nov
No flights
Dec
No flights

Airport Details

Origin

St Louis

St. Louis Lambert International Airport (STL)

St Louis, STL
Zone

Chicago

Elev

618 ft

Destination

Houston

George Bush Intercontinental Houston Airport (IAH)

Houston, IAH
Zone

Chicago

Elev

97 ft

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