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Uncover the best deals on Houston to St Louis flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest IAH - STL Flights
Useful information for finding best airline tickets from George Bush Intercontinental Houston to Lambert St Louis International on your next trip.
Cheapest Round Trip Flight
$160
Frontier Airlines
• 1 stop
• 20h 52m
Sep 16 – Sep 21
The cheapest round trip flight from Houston to St Louis (IAH-STL-IAH) is currently $160
Cheapest Direct Flight
$337
United Airlines
• nonstop
• 3h 32m
Sep 16
The cheapest nonstop flight from Houston to St Louis (IAH-STL) is currently $337
Fastest Flight
3h 30m
The fastest nonstop flight from Houston to St Louis (IAH-STL) takes 3h 30m
Latest Flight Deals from Houston (IAH) to St Louis (STL)
Compare and book low fare round-trip air tickets from Houston to St Louis. Ideal for travelers with confirmed return itineraries.
Sep 16 - Sep 21, Economy
Houston → St Louis
20h 52m
6:25 AM - 7:17 PM • 1 stop
Houston → St Louis
22h 5m
8:10 PM - 9:35 AM • 1 stop
Frontier Airlines
Sep 16 - Sep 21, Economy
Houston → St Louis
10h 42m
6:28 AM - 1:10 PM • 1 stop
Houston → St Louis
13h 21m
2:29 PM - 10:30 PM • 1 stop
Frontier Airlines
Sep 16 - Sep 21, Economy
Houston → St Louis
8h 35m
5:40 AM - 10:55 AM • 1 stop
Houston → St Louis
7h 2m
4:59 PM - 9:21 PM • 1 stop
Delta Airlines
Sep 16 - Sep 21, Economy
Houston → St Louis
3h 32m
8:15 PM - 10:27 PM • nonstop
Houston → St Louis
3h 37m
11:15 AM - 1:32 PM • nonstop
United Airlines
Sep 16 - Sep 21, Economy
Houston → St Louis
9h 8m
11:00 AM - 4:48 PM • 1 stop
Houston → St Louis
5h 46m
5:43 AM - 9:29 AM • 1 stop
American Airlines
Looking for the fastest way to St Louis? These direct flight options from IAH to STL offer both convenience and value—no layovers, just straight to your destination.
Sep 16 - Sep 21, Economy
Houston → St Louis
3h 32m
8:15 PM - 10:27 PM • nonstop
Houston → St Louis
3h 37m
11:15 AM - 1:32 PM • nonstop
United Airlines
Sep 16 - Sep 21, Economy
Houston → St Louis
3h 31m
12:04 PM - 2:15 PM • nonstop
Houston → St Louis
3h 37m
11:15 AM - 1:32 PM • nonstop
United Airlines
FAQs on Houston to St Louis Flights
What are the airports in Houston?
IAH
What’s the most popular airline flying from IAH to STL?
The most popular airline flying from Houston to St Louis are
Can I fly from IAH to STL non-stop?
Yes, you can fly IAH to STL non-stop on
Which airlines fly nonstop between Houston and St Louis?
The non-stop flights between Houston and St Louis are .
What’s the earliest departure time from IAH to STL Airport?
The earliest flight leaves IAH at 5:40 am and lands in STL - Lambert St Louis International
What are the airports in St Louis?
STL
Can I make changes to my Houston to St Louis flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from IAH to STL?
Read the fare rules of the Houston to St Louis air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Houston and St Louis?
operate flights between Houston and St Louis
How long does a flight from Houston to St Louis take?
It takes approximately 2 hour to fly non-stop from IAH to STL, which is 667.31 miles by air.
Which airlines provide the cheapest flights from Houston (IAH) to St Louis (STL) ?
In the past couple of days, the cheapest tickets to STL from IAH were found on AA : USD 357
Do I need a passport to fly between IAH and STL?
No
What’s the latest departure time from IAH to STL ?
The last flight leaves IAH at 8:15 pm
Houston (IAH) to St Louis (STL): Airport Information
| Origin Airport | George Bush Intercontinental Houston , Houston, US |
| Destination Airport | Lambert St Louis International , St Louis, US |
| Distance | 667 miles |
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