IAH - STL

$62 Find Cheap Flights from Houston George Bush Airport to St. Louis - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from George Bush Intcntl to St. Louis departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Everything you should know

Cheapest round-trip
$125
Typical prices: $217-$734
Frontier
Tue 8/4Wed 8/12
IAH - STL • 1 stop
Cheapest non-stop
$217
Typical prices: $330-$734
United Airlines
Wed 8/5Wed 8/12
IAH - STL • Non-stop
Nonstop flights
You can fly direct with United Airlines. Average duration is 2h 11m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $202 (round-trip)
Shortest trip • 4h 08m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals

Cheap Flights from George Bush Intcntl to St. Louis (IAH-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from George Bush Intcntl to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from George Bush Intcntl to St. Louis

Tue, Aug 4 - Wed, Aug 12
Frontier Logo
10:53 am - 5:37 pm
IAH
-
STL
6h 44m
1 stop
Frontier Logo
4:57 pm - 10:29 pm
STL
-
IAH
5h 32m
1 stop
$125Frontier
Wed, Aug 5 - Tue, Aug 11
Frontier Logo
8:02 pm - 5:37 pm
IAH
-
STL
21h 35m
1 stop
Frontier Logo
6:34 pm - 7:20 am
STL
-
IAH
12h 46m
1 stop
$126Frontier
Tue, Aug 4 - Fri, Aug 14
Frontier Logo
8:50 am - 5:37 pm
IAH
-
STL
8h 47m
1 stop
Frontier Logo
4:57 pm - 7:20 am
STL
-
IAH
14h 23m
1 stop
$127Frontier
Tue, Aug 4 - Fri, Aug 14
Frontier Logo
8:02 pm - 8:57 am
IAH
-
STL
12h 55m
1 stop
Frontier Logo
4:57 pm - 7:20 am
STL
-
IAH
14h 23m
1 stop
$128Frontier
Thu, Aug 6 - Wed, Aug 12
Frontier Logo
8:02 pm - 8:57 am
IAH
-
STL
12h 55m
1 stop
Frontier Logo
4:57 pm - 10:29 pm
STL
-
IAH
5h 32m
1 stop
$130Frontier
Thu, Aug 6 - Fri, Aug 14
Frontier Logo
8:02 pm - 8:57 am
IAH
-
STL
12h 55m
1 stop
Frontier Logo
4:57 pm - 7:20 am
STL
-
IAH
14h 23m
1 stop
$131Frontier
Fri, Aug 7 - Tue, Aug 11
Frontier Logo
8:02 pm - 8:57 am
IAH
-
STL
12h 55m
1 stop
Frontier Logo
6:34 pm - 7:20 am
STL
-
IAH
12h 46m
1 stop
$135Frontier
Tue, Aug 4 - Thu, Aug 13
Frontier Logo
10:53 am - 5:37 pm
IAH
-
STL
6h 44m
1 stop
Frontier Logo
6:34 pm - 7:20 am
STL
-
IAH
12h 46m
1 stop
$136Frontier
Tue, Aug 4 - Sun, Aug 9
Frontier Logo
10:53 am - 5:37 pm
IAH
-
STL
6h 44m
1 stop
Frontier Logo
6:34 pm - 7:20 am
STL
-
IAH
12h 46m
1 stop
$137Frontier
Fri, Aug 7 - Wed, Aug 12
Frontier Logo
8:02 pm - 8:57 am
IAH
-
STL
12h 55m
1 stop
Frontier Logo
4:57 pm - 10:29 pm
STL
-
IAH
5h 32m
1 stop
$138Frontier
Booking Insights

KAYAK's insights & trends for George Bush Intcntl to St. Louis flights

Get data-powered insights and trends into flights from George Bush Intcntl to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Houston George Bush Intcntl Airport to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Houston George Bush Intcntl Airport to St. Louis departing in August.

What’s the cheapest day of the week to fly from Houston George Bush Airport to St. Louis?

The average price of all round-trip flights from Houston George Bush Intcntl Airport to St. Louis clicked on KAYAK for each day over the last 12 months.

For Houston George Bush Airport to St. Louis, Wednesday is the cheapest day to fly on average and Monday is the most expensive. Flying from St. Louis back to Houston George Bush Airport, the best deals are generally found on Friday, with Monday being the most expensive.

What is the cheapest month to fly from Houston George Bush Intcntl Airport to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston George Bush Intcntl Airport to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Houston George Bush Intcntl Airport to St. Louis is October, where tickets cost $317 (return) on average. On the other hand, the most expensive months are April and March, where the average cost of round-trip tickets is $741 and $670 respectively.

Can I save money by flying with a layover from Houston George Bush Intcntl Airport to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $296, prices are generally cheapest when you fly direct.

Expert advice

Expert advice for your flight from George Bush Intcntl to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
John Walton

John Walton

Expert on IAH

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Good to know

Low season

August

Cheapest flight

$62
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 65% increase in price.
Flight from Houston George Bush Airport to St. Louis

When to book flights from George Bush Intcntl to St. Louis

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Houston George Bush Airport to St. Louis flights

  • What are the transport options from STL to downtown St. Louis?

    Hop on the RED line MetroLink light rail from either Exit Door 1 of Terminal 1 or the parking garage in Terminal 2 to St. Louis Proper. Alternatively, Go BEST Express links the airport to various destinations. They offer door-to-door and shared-ride shuttle services. Metered taxis are accessible from Terminal 2, close to Exit Door 12, and Terminal 1, adjacent to Exit Door 14.

  • Are there facilities for passengers towing along with their kids at STL?

    Are you traveling with children to St. Louis? Since children sometimes become agitated in airports, why not make a pit stop at St. Louis International's Play Port close to gate C3? The Play Port is a great spot for kids to blow off steam after their trip. It has transportation-themed play spaces such as an air traffic control tower, a miniature plane, and a MetroLink train.

  • What are the dining options at St. Louis Lambert International Airport (STL)?

    Visitors to STL who are hungry have several options. Grounded in Concourse A offers gourmet burgers and more. Do you prefer Artisan pizza? Pay a visit to Pizza Studio in Concourse A. Three Kings Public House, Schlafly, and Missouri Vineyards are your best bets for local cuisines and drinks. They provide a wide range of regional fare and drinks that are bound to impress.

  • What is there to do at IAH?

    If your flight from IAH to STL is delayed, why don’t you take a stroll in IAH and take in the numerous artworks by Texan-based artists displayed at the airport? These exhibits range from sculptures to photographs and can be found at Terminal D, Levels M, 2, and 1, Terminal A, Levels 1 and 2, and Terminal E's Levels 1 and 2.

  • What is the cheapest flight from Houston George Bush Intcntl Airport to St. Louis?

    In the last 5 days, the lowest price for a flight from Houston George Bush Intcntl Airport to St. Louis was $62 for a one-way ticket and $125 for a round-trip.

  • Do I need a passport to fly between Houston George Bush Airport and St. Louis?

    A passport is not required to fly from Houston George Bush Airport to St. Louis.

  • Which airlines offer Wi-Fi service onboard planes from Houston George Bush Airport to St. Louis?

    Only JetBlue offers inflight Wi-Fi service on the Houston George Bush Airport to St. Louis flight route.

  • Which aircraft models fly most regularly from Houston George Bush Airport to St. Louis?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Houston George Bush Airport to St. Louis flight route.

  • Which airline alliances offer flights from Houston George Bush Airport to St. Louis?

    Star Alliance is the only airline alliance operating flights between Houston George Bush Airport and St. Louis.

  • On which days can I fly direct from Houston George Bush Airport to St. Louis?

    There are nonstop flights from Houston George Bush Airport to St. Louis on a daily basis.

  • Which is the best airline for flights from Houston to St. Louis, United Airlines or Frontier?

    The two airlines most popular with KAYAK users for flights from Houston to St. Louis are United Airlines and Frontier. With an average price for the route of $507 and an overall rating of 7.4, United Airlines is the most popular choice. Frontier is also a great choice for the route, with an average price of $235 and an overall rating of 5.6.

  • How does KAYAK find such low prices on flights from Houston George Bush Airport to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston George Bush Airport to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston George Bush Airport to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Houston George Bush Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston George Bush Airport to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Houston George Bush Airport with another airline. Booking your flights between Houston George Bush Airport and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston George Bush Airport to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Houston George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Houston George Bush Intcntl Airport to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $326 or less one-way and $460 or less round-trip.
  • If you need to loosen up before your flight from Houston George Bush Airport (IAH), use one of the massage chairs at Terminals A, B, C, D, and E. A 5-minute deep-tissue massage is available for a modest fee. You can also indulge yourself at the Xpress Spa in Terminal A. Spa services include massages, facials, manicures, and pedicures.
  • Passengers bringing their four-legged buddy to IAH will be glad to hear that pet relief zones are both within and outside the primary terminals. These include locations near Gate B1 in Terminal B and Gate E12 in Terminal E.
  • If you are booking a flight from Houston George Bush Airport to St. Louis (STL), you are most likely to fly into STL. The airport features two terminals (1 and 2) with five concourses, A-E. STL offers a complimentary shuttle service that operates every 8-12min between the two terminals, stopping at the BusPort in between terminal stops. Shuttles depart from Exit Door 12 of either terminal.
  • Many passengers like to lounge as they wait for their plane to depart. The United Club has locations in Terminals A, B, C, and E, and the KLM Lounge and Centurion Lounge in Terminal D of IAH. All are easily accessible on paid entry.
  • Single-stop flights from George Bush Intercontinental Airport (IAH) to St. Louis are eco-friendlier than direct flights. Approximately 1,017 kg of carbon is emitted per person on this route. American Airlines is the most-sustainable airline on this route, which releases 53% less carbon.

Prefer to fly direct from Houston George Bush Airport to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Houston George Bush Intcntl to Lambert-St Louis.
Find which airlines fly direct from Houston George Bush Intcntl Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Houston George Bush Intcntl to Lambert-St Louis

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Lambert-St Louis to Houston George Bush Intcntl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top airlines flying from George Bush Intcntl to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Houston to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from George Bush Intcntl to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9993 reviews
7.3Comfort
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
Airline reviews

Comfortable seating POS to IAH. Food options were satisfactory. Good seat from IAH to ANC. Food options could be better.

8.0 ExcellentAnonymous, Jul 2026
IAH - ANC
Read more United Airlines reviews

Comfortable seating POS to IAH. Food options were satisfactory. Good seat from IAH to ANC. Food options could be better.

Always pretty good as far as I see it. Staff was friendly and process was quick to get on and off.

There could have been better food options in economy on the long 7hr trip from IAH to AM.

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

Airport terminal was outdated, flight was on a small jet with no wifi

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

We were delayed three times ,and that destroyed my plans, and reservations

The reps working at the airport counter were dumber than a second coat of paint.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

Airline changed the gate from Terminal A to Terminal D which is quite far and only sent a text message few minutes before boarding. Around 50 people missed their flight and as plane didn’t wait for them.

Bad experience… crew are extremely strict with personal bags… they overcharge me coz my bag was one inch H

Well I mean u get what u pay for so 🤷‍♂️

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Plane was clean but they do not allow bag drop until 1 hour before flight. Just encouraging late fees and other issues. The worst I have experienced. Total hostage situation, pay or you miss your flight.

Everything was good, and most importantly on time. They have been extremely tardy in some of my flights

The experience was terrible. The flight boarded late, then after leaving the gate the plane had had to return to the gate for fuel. After 2 hours on the plane, the flight was canceled. The reasons given for the cancelation didn't sound truthful. and different reasons were given. My 15 year old daughter was flying alone on this flight. When they all disembarked the plane she kept asking the crew what she was supposed to do. No one even gave her the courtesy of a response. No one. It took another 4.75 hrs to be out of customs and baggage. She was re-booked the following day. That flight departed 2 hours late. After all of that, they offered a measly $100 flight voucher with an expiry date of 3 months! All in all a terrible experience. We won't be using Frontier again in the future.

Everything you need to know for your flight from George Bush Intcntl to St. Louis

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