Direct flights from Houston to St Louis

Did you mean Flights from St Louis to Houston?

Houston

United States

IAH

George Bush Intercontinental Houston Airport

St Louis

United States

STL

Lambert St Louis International Airport

Route: Nonstop service available
Distance: 668 miles
Marketing airlines: 6 airlines
Aircraft: 9 aircraft types
Dates: Oct 19, 2026 – Oct 17, 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.

Lowest price in this limited sample: 12,500 points + $9.00 for IAH → STL, Economy, on 2026-10-24, booked with Virgin Australia. This is an observed fare, not a guaranteed price or the lowest price across all dates and programs.

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

IAH → STLEconomy
UA1528
12,500 points+ $9.00
Departure
2026-10-24
Seats seen
9
Book with
Virgin Australia
Observed (UTC)
2026-10-23 02:17
IAH → STLEconomy
UA2042
12,500 points+ $9.00
Departure
2026-10-24
Seats seen
9
Book with
Virgin Australia
Observed (UTC)
2026-10-23 02:17
IAH → STLEconomy
UA2804
12,500 points+ $9.00
Departure
2026-10-26
Seats seen
9
Book with
Virgin Australia
Observed (UTC)
2026-10-23 01:53

Houston to St Louis route overview

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

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

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

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 17, 2027.

Marketing airlines on the Houston to St Louis 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 IAH to STL

Frequently asked questions

Which airports serve the Houston to St Louis route?

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

How far is St Louis from Houston?

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

Are there direct flights from IAH to STL?

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

Which airlines market flights from IAH to STL?

Which aircraft fly from IAH to STL?

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.