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Direct flights from St Louis to Houston

Did you mean Flights from Houston to St Louis?

Flightmap/Flights from STL/STL to IAH

St Louis

United States

STL

Lambert St Louis International Airport

Houston

United States

IAH

George Bush Intercontinental Houston Airport

Route
Nonstop service available
Distance
668 miles
Marketing airlines
6 airlines
Aircraft
9 aircraft types
Dates
Oct 19, 2026 – Oct 18, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Departure window: 2026-10-23 – 2026-11-21.

No recent fares appear in this limited preview. This does not mean the route is sold out. Use the search controls to check other dates and routes.

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Explore these airports and cities

  • Flights from STL
  • Flights to IAH

St Louis to Houston route overview

Lambert St Louis International Airport (STL) serves St Louis; George Bush Intercontinental Houston Airport (IAH) serves Houston.

The airports are 668 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from STL to IAH.

Marketing airlines listed in the current schedule, including codeshare sellers, are Copa Airlines (CM), Emirates (EK), All Nippon Airways (NH), Air New Zealand (NZ), United Airlines (UA) and Virgin Australia (VA). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 19, 2026 – Oct 18, 2027.

Marketing airlines on the St Louis to Houston route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

  • Copa Airlines (CM)Codeshare only
  • Emirates (EK)Codeshare only
  • All Nippon Airways (NH)Codeshare only
  • Air New Zealand (NZ)Codeshare only
  • Virgin Australia (VA)Codeshare only

Airline alliance affiliations represented: Star Alliance

Aircraft flying from STL to IAH

Frequently asked questions

Which airports serve the St Louis to Houston route?

Lambert St Louis International Airport (STL) is the origin airport and George Bush Intercontinental Houston Airport (IAH) is the destination airport.

How far is Houston from St Louis?

STL and IAH are approximately 668 miles apart by great-circle distance.

Are there direct flights from STL to IAH?

Yes. Roame's current schedule feed shows nonstop service from STL to IAH.

Which airlines market flights from STL to IAH?

Marketing airlines listed in the current schedule, including codeshare sellers, are Copa Airlines (CM), Emirates (EK), All Nippon Airways (NH), Air New Zealand (NZ), United Airlines (UA) and Virgin Australia (VA). This list does not identify the operating airline for each flight; check the flight details before booking.

Which aircraft fly from STL to IAH?

Aircraft listed in the current schedule include Airbus A319 (319), Airbus A320 (320), Boeing 737-800 (738), Boeing 737-900 / Boeing 737-900ER (739), Boeing 737-700 / Boeing 737-700ER (73G), Boeing 737 MAX 8 (7M8), CR5, Embraer 175 (long wing) (E7W) and JET.

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