St Louis to Houston
STLIAH
Fly from St Louis to Houston starting at USD 100 with Frontier Airlines.
Best fare available on Dec 16, 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
Oct
from USD 167
Nov
No flights
Dec
from USD 100
Jan
No flights
Feb
No flights
Mar
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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