$89 Cheap United flights from St. Louis to Houston (STL to IAH)

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

Flexible dates

Amazing United STL to IAH Flight Deals

The cheapest flights to George Bush Intercontinental found within the past 7 days were $175 round trip and $89 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Apr 2 - Wed, Apr 9
STL
St. Louis
IAH
Houston
$175 Roundtrip, found 5 days ago
$175
Roundtrip
found 5 days ago
Select United flight, departing Wed, Apr 2 from St. Louis to Houston, returning Wed, Apr 9, priced at $175 found 5 days ago
Wed, Apr 2 - Wed, Apr 9
STL
St. Louis
IAH
Houston
$177 Roundtrip, found 5 days ago
$177
Roundtrip
found 5 days ago
Select United flight, departing Wed, Apr 2 from St. Louis to Houston, returning Wed, Apr 9, priced at $177 found 5 days ago
Wed, Apr 2 - Wed, Apr 9
STL
St. Louis
IAH
Houston
$187 Roundtrip, found 5 days ago
$187
Roundtrip
found 5 days ago
Select United flight, departing Wed, Apr 2 from St. Louis to Houston, returning Wed, Apr 9, priced at $187 found 5 days ago
Mon, Mar 10 - Fri, Mar 14
STL
St. Louis
IAH
Houston
$198 Roundtrip, found 1 day ago
$198
Roundtrip
found 1 day ago
Select United flight, departing Mon, Mar 10 from St. Louis to Houston, returning Fri, Mar 14, priced at $198 found 1 day ago

IAH From STL Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Voyager At Space Center By Barsala

Voyager At Space Center By Barsala

4 out of 5
per person
Mar 7 - Mar 11
found 7 hours ago
Roundtrip flight included
St. Louis (STL) to Houston (IAH)
Aloft Houston Shenandoah

Aloft Houston Shenandoah

3 out of 5
per person
Mar 23 - Mar 29
found 21 hours ago
Roundtrip flight included
St. Louis (STL) to Houston (IAH)
The Lancaster Hotel

The Lancaster Hotel

4 out of 5
Save 100% on your flight
per person
Mar 7 - Mar 11
found 7 hours ago
Roundtrip flight included
St. Louis (STL) to Houston (IAH)
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Frequently asked questions

Can I catch a flight from STL to IAH right now?
It’s always wise to learn about any travel advice reports and quarantine requirements in place in your destination. Be sure to go to our Covid-19 Travel Advisor for up-to-date information on flying to IAH from STL.
What terminal is United Airlines at St. Louis Lambert International Airport?
At Lambert-St. Louis Intl. Airport (STL), United Airlines flights to George Bush Intercontinental Airport (IAH) generally board from terminal 1. Need to know exactly which terminal you’ll be exiting the plane at? It’s most likely to be terminal B.
Are there United Airlines non-stop flights from STL to IAH?
Direct flights are available with United Airlines, which means you can travel from St. Louis Lambert International Airport to Houston Airport the easy way. Those thrilling vacation experiences you’re craving are a convenient flight away.
How long is a United Airlines flight from STL to IAH?
Just 3 hours and 24 minutes is approximately how long you’ll be airborne for if you’re traveling with United Airlines from Lambert Field to Houston Airport. That’ll give you just enough time to read several chapters of your favorite book or enjoy a short power nap.
What type of aircraft does United Airlines fly from STL to IAH?
If you’re journeying from STL to IAH with United Airlines, you’ll usually be cruising the skies aboard the Embraer ERJ or the Embraer 175.
How many direct and indirect flights does United Airlines fly from STL to IAH?
When journeying from STL to IAH, you’ll find there are around 5 United Airlines daily flights to select from.
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 George Bush Intercontinental Airport (IAH), 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.

Discover our best United flight from St. Louis STL to Houston IAH 

To find the best deals on flights to St. Louis from Houston with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from St. Louis STL to Houston IAH with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $175 to $198, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from St. Louis STL to Houston IAH 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from St. Louis to Houston costs from $89. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Houston IAH from  St. Louis STL with United 

To find a cheap United flight from St. Louis STL to Houston IAH, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from St. Louis STL to Houston IAH 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as April, or if you book a flight with a stopover. 

 

Find nonstop flights from St. Louis STL to Houston IAH with United 

If you’re keen to be on Houston soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from St. Louis STL to Houston IAH 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Houston IAH from  St. Louis STL with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to Houston

Houston Airport Marriott at George Bush Intercontinental
Houston Airport Marriott at George Bush Intercontinental
3.5 out of 5
18700 John F Kennedy Blvd, Houston, TX
This hotel features a restaurant, an outdoor pool, and a bar/lounge. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public ...
8.6/10 Excellent! (1,684 reviews)
"Great"

Reviewed on Feb 17, 2025

Houston Airport Marriott at George Bush Intercontinental
Ramada by Wyndham Houston Intercontinental Airport East
Ramada by Wyndham Houston Intercontinental Airport East
3.5 out of 5
6115 Will Clayton Parkway, Humble, TX
This hotel features a restaurant, a 24-hour gym, and a bar/lounge. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public ...
7.2/10 Good! (2,034 reviews)
"Restaurant on site was great"

Reviewed on Feb 20, 2025

Ramada by Wyndham Houston Intercontinental Airport East
Hampton Inn & Suites Houston-Bush Intercontinental Aprt
Hampton Inn & Suites Houston-Bush Intercontinental Aprt
3 out of 5
15831 Jfk Blvd, Houston, TX
This hotel features an outdoor pool and a gym. Guests will appreciate freebies like on-the-go breakfast, WiFi in public areas, and a roundtrip airport shuttle. ...
8.6/10 Excellent! (1,254 reviews)
"Nice hotel and clean. Staff was friendly and helpful. Good selection of breakfast foods."

Reviewed on Feb 18, 2025

Hampton Inn & Suites Houston-Bush Intercontinental Aprt
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.