Routes · From IAH

Houston (IAH) to St Louis (STL) flights

Nonstop from George Bush Intercontinental to St. Louis Lambert International Airport: distance, flying time, which airlines fly it and how often.

Distance

1,076km

669 mi, great circle

Flying time

2h 05m

typical, gate to gate

Flights a day

5.7

average, November 2026

Airlines

passenger airlines

Airlines flying IAH to STL

Route map

The shortest path over the Earth's surface. Actual tracks vary with winds and airspace. Map © OpenStreetMap contributors.

Cheapest recent fare

Fares found in recent searches load here. You can also compare IAH to STL fares by month.

Both directions

St. Louis Lambert International Airport (STL) · we don't have STL's route list yet
All nonstop routes from Houston (IAH)
IAH to STL on the flight-path tool

Related guides

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Closest Airport to Galveston Cruise Terminal: IAH vs HOU

The closest airport to the Galveston cruise terminal is Hobby (HOU), about 42 miles away. See how it compares with IAH on cost, time and flight options.

October 15, 2026

Frequently asked questions

How long is the flight from Houston to St Louis?

About 2h 05m gate to gate for the 1,076 km (669 mile) trip, estimated from distance. Schedules vary by airline and season, and winds can add or save time.

Which airlines fly nonstop from IAH to STL?

Republic Airways and United Airlines, with about 5.7 flights a day between them in our data (AeroDataBox, November 2026).