Houston to St Louis

IAHSTL

Fly from Houston to St Louis starting at USD 120 with Frontier Airlines.Best fare available on Nov 20, 2026.Limited seats. Better plans. Book before it's gone.

Houston to St Louis cheapest flights this week

10 Oct
Frontier Airlines
06:24IAH
18:57STL
1 StopUSD 212VIEW DEAL
18 Oct
Frontier Airlines
14:41IAH
12:35STL
1 StopUSD 214VIEW DEAL
26 Oct
United Airlines
20:20IAH
22:26STL
DirectUSD 141VIEW DEAL
20 Nov
Frontier Airlines
07:00IAH
17:40STL
1 StopUSD 120VIEW DEAL

Houston to St Louis monthly flight fare trend

Oct
from USD 141
Nov
from USD 120
Dec
No flights
Jan
No flights
Feb
No flights
Mar
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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