$123 Cheap United flights from Houston to St. Louis (IAH to STL)

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

Amazing United IAH to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $207 round trip and $123 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Aug 15 - Tue, Aug 20
IAH
Houston
STL
St. Louis
$207 Roundtrip, found 6 days ago
$207
Roundtrip
found 6 days ago
Select United flight, departing Thu, Aug 15 from Houston to St. Louis, returning Tue, Aug 20, priced at $207 found 6 days ago
Thu, Jul 25 - Wed, Jul 31
IAH
Houston
STL
St. Louis
$259 Roundtrip, found 1 day ago
$259
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jul 25 from Houston to St. Louis, returning Wed, Jul 31, priced at $259 found 1 day ago

STL From IAH Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Super 8 by Wyndham Cuba

Super 8 by Wyndham Cuba

2 out of 5
per person
Jul 18 - Jul 22
found 1 day ago
Roundtrip flight included
Houston (IAH) to St. Louis (STL)
Best Western Coachlight

Best Western Coachlight

2.5 out of 5
per person
Jul 18 - Jul 22
found 1 day ago
Roundtrip flight included
Houston (IAH) to St. Louis (STL)
Comfort Suites Rolla

Comfort Suites Rolla

2.5 out of 5
per person
Jul 18 - Jul 22
found 1 day ago
Roundtrip flight included
Houston (IAH) to St. Louis (STL)
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Frequently asked questions

Can I catch a flight from Houston Airport to St. Louis Lambert International Airport right now?
For information on any present STL travel advice and quarantine requirements, visit our Covid-19 Travel Advisor. Check before you arrange your flight, so you don’t get caught up.
What terminal is United Airlines at Houston Airport?
At George Bush Intercontinental Airport (IAH), United Airlines flights to St. Louis Lambert International Airport often set off from terminal B. Not sure exactly which terminal you’ll be arriving at? It’ll most likely be terminal 1.
Are there United Airlines non-stop flights from IAH to STL?
If you’re going from IAH to St. Louis Lambert International Airport and want a nonstop flight, United Airlines has got you covered. Reserve your ticket now and you’ll be touching down at your destination before you know it.
How long is a United Airlines flight from IAH to STL?
From the minute your United Airlines aircraft pushes back from the gate at Houston Airport to the second it pulls into St. Louis Lambert International Airport, your plane ride will last an average of 3 hours and 9 minutes. With such a quick flight time, it’s the perfect spur-of-the-moment escape.
What type of aircraft does United Airlines fly from IAH to STL?
Traveling with United Airlines from IAH to STL? The Embraer ERJ and the Embraer 175 are the aircraft models that normally operate on this route.
How many direct and indirect flights does United Airlines fly from IAH to STL?
You can choose between about 5 flights every day with United Airlines from IAH to Lambert-St. Louis Intl. Airport (STL).
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.

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

To find the best deals on flights to Houston from St. Louis with United, just enter your travel dates, filter by United, and hit search. You’ll find 3 flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Houston IAH to St. Louis STL 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 $207 to $259, 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 Houston IAH to St. Louis STL 

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 Houston to St. Louis costs from $123. Prices and availability subject to change. Additional terms may apply. 

 

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

To find a cheap United flight from Houston IAH to St. Louis STL, 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 Houston IAH to St. Louis STL 

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 August, or if you book a flight with a stopover. 

 

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

If you’re keen to be on St. Louis soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around 2 hour(s) 5 min(s) – so you’ll be there before you know it. 

 

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

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 St. Louis STL from  Houston IAH 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

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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.
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