$119 Cheap American Airlines flights from Houston to St. Louis (IAH to STL)

Find The Best Day To Fly from Houston to St. Louis

Amazing American Airlines IAH to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $193 round trip and $119 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Oct 2 - Sun, Oct 5
IAH
Houston
STL
St. Louis
$193 Roundtrip, found 1 day ago
$193
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 2 from Houston to St. Louis, returning Sun, Oct 5, priced at $193 found 1 day ago
Wed, Sep 3 - Sun, Sep 7
IAH
Houston
STL
St. Louis
$197 Roundtrip, found 3 days ago
$197
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 3 from Houston to St. Louis, returning Sun, Sep 7, priced at $197 found 3 days ago
Wed, Sep 3 - Sun, Sep 7
IAH
Houston
STL
St. Louis
$200 Roundtrip, found 3 days ago
$200
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 3 from Houston to St. Louis, returning Sun, Sep 7, priced at $200 found 3 days ago
Fri, Aug 15 - Sun, Aug 17
IAH
Houston
STL
St. Louis
$213 Roundtrip, found 3 hours ago
$213
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Aug 15 from Houston to St. Louis, returning Sun, Aug 17, priced at $213 found 3 hours ago
Thu, Oct 2 - Sun, Oct 5
IAH
Houston
STL
St. Louis
$228 Roundtrip, found 1 day ago
$228
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 2 from Houston to St. Louis, returning Sun, Oct 5, priced at $228 found 1 day ago
Tue, Sep 30 - Wed, Oct 1
IAH
Houston
STL
St. Louis
$237 Roundtrip, found 19 hours ago
$237
Roundtrip
found 19 hours ago
Select American Airlines flight, departing Tue, Sep 30 from Houston to St. Louis, returning Wed, Oct 1, priced at $237 found 19 hours ago

STL From IAH Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
The Wildwood Hotel

The Wildwood Hotel

3.5 out of 5
Save 100% on your flight
per person
Aug 8 - Aug 15
found 23 hours ago
Roundtrip flight included
Houston (IAH) to St. Louis (STL)
Hampton Inn By Hilton St Louis Airport

Hampton Inn By Hilton St Louis Airport

2.5 out of 5
Save 100% on your flight
per person
Aug 8 - Aug 15
found 23 hours ago
Roundtrip flight included
Houston (IAH) to St. Louis (STL)
Hilton Garden Inn St. Louis/O'Fallon MO

Hilton Garden Inn St. Louis/O'Fallon MO

3 out of 5
Save 100% on your flight
per person
Aug 8 - Aug 15
found 23 hours ago
Roundtrip flight included
Houston (IAH) to St. Louis (STL)
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Frequently asked questions

Can I catch a flight from IAH to Lambert-St. Louis Intl. Airport (STL) right now?
For information on any present St. Louis Lambert International Airport travel advice and quarantine requirements, visit the Covid-19 Travel Advisor. Look before you arrange your flight, so you don't get caught up.
What terminal is American Airlines at Houston Airport?
You should find out which terminal American Airlines departs from at IAH once you're issued with your ticket. The same applies to information about your arrival at Lambert-St. Louis Intl. Airport (STL). If those details are missing, ask your airline.
Are there American Airlines non-stop flights from IAH to STL?
Be ready for at least one stopover when traveling from IAH to STL, as American Airlines doesn't offer any nonstop flights on this route. While in transit, you might like to purchase the local newspaper or an interesting magazine from the airport bookstore to help pass the time.
How long is an American Airlines flight from IAH to STL?
From when your American Airlines aircraft pushes back from the gate at George Bush Intercontinental Airport (IAH) to the moment it pulls into St. Louis Lambert International Airport, your trip will take roughly 3 hours and 20 minutes. With such a short flight time, it's a great little spur-of-the-moment escape.
How many direct and indirect flights does American Airlines fly from IAH to STL?
There are roughly 5 flights every day with American Airlines from George Bush Intercontinental Airport (IAH) to Lambert Field.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Lambert-St. Louis Intl. Airport (STL), please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Travelers ❤️ these 🏨 after their flight to St. Louis

Pear Tree Inn St. Louis Airport

Pear Tree Inn St. Louis Airport

2.5 out of 5
10810 Pear Tree Ln, St. Ann, MO
This hotel features a gym and a seasonal outdoor pool. Traveling on business? Take advantage of the business center, free WiFi in public areas, and free airport ...
9.2/10 Wonderful! (2,616 reviews)
"Perfect pre flight overnight"

Reviewed on Jul 14, 2025

Pear Tree Inn St. Louis Airport
Wingate by Wyndham St. Louis Airport

Wingate by Wyndham St. Louis Airport

2.5 out of 5
10820 Pear Tree Lane, St. Ann, MO
This hotel features an outdoor pool and a 24-hour gym. Traveling on business? Take advantage of the business center, free WiFi in public areas, and free airport ...
9.2/10 Wonderful! (1,333 reviews)
"The whole process was smooth checking in and out. the staff were all great. Bedroom was clean"

Reviewed on Jul 15, 2025

Wingate by Wyndham St. Louis Airport
DoubleTree by Hilton St. Louis Airport

DoubleTree by Hilton St. Louis Airport

4 out of 5
4505 Woodson Road, St. Louis, MO
This hotel features an outdoor pool, a 24-hour gym, and a restaurant. Bring the family and enjoy the arcade/game room and kid-friendly dining. Unwind with a ...
7.8/10 Good! (768 reviews)
"Clean and the staff was wonderful"

Reviewed on Jul 10, 2025

DoubleTree by Hilton St. Louis Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.