St Louis to Houston
STLIAH
Fly from St Louis to Houston starting at USD 387 with Frontier Airlines.
Best fare available on Jun 20, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Houston cheapest flights this week
St Louis to Houston monthly flight fare trend
Jun
from USD 387
Jul
No flights
Aug
No flights
Sep
No flights
Oct
No flights
Nov
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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