IAH - STL

$62 Find Cheap Flights from Houston George Bush Airport to St. Louis

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 9/1. 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.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to St. Louis, as well as popular online travel agencies
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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

Thu, Aug 28 - Thu, Sep 4
Spirit Airlines Logo
7:00 am - 1:32 pmIAH-STL
6h 32m1 stop
Spirit Airlines Logo
12:05 pm - 7:45 pmSTL-IAH
7h 40m1 stop
$113Spirit Airlines
Find Deal
Fri, Aug 22 - Sun, Aug 24
Spirit Airlines Logo
6:10 am - 1:32 pmIAH-STL
7h 22m1 stop
Spirit Airlines Logo
2:30 pm - 7:43 pmSTL-IAH
5h 13m1 stop
$154Spirit Airlines
Find Deal
Fri, Aug 22 - Mon, Aug 25
Spirit Airlines Logo
6:10 am - 1:32 pmIAH-STL
7h 22m1 stop
Spirit Airlines Logo
2:30 pm - 7:43 pmSTL-IAH
5h 13m1 stop
$157Spirit Airlines
Find Deal
Thu, Aug 21 - Mon, Aug 25
 Logo
8:08 pm - 9:11 amIAH-STL
13h 03m1 stop
 Logo
2:30 pm - 7:43 pmSTL-IAH
5h 13m1 stop
Sat, Sep 6 - Wed, Sep 17
Frontier Logo
9:08 pm - 9:06 amIAH-STL
11h 58m1 stop
Frontier Logo
7:55 pm - 11:39 pmSTL-IAH
27h 44m1 stop
$205Frontier
Find Deal
Wed, Aug 13 - Wed, Aug 20
Frontier Logo
8:56 pm - 11:47 pmIAH-STL
26h 51m1 stop
Frontier Logo
7:54 pm - 10:39 amSTL-IAH
14h 45m1 stop
$208Frontier
Find Deal
Tue, Aug 26 - Sat, Aug 30
United Airlines Logo
12:15 pm - 2:26 pmIAH-STL
2h 11mnonstop
United Airlines Logo
6:15 am - 8:34 amSTL-IAH
2h 19mnonstop
$217United Airlines
Find Deal
Thu, Aug 28 - Thu, Sep 4
 Logo
7:00 am - 1:32 pmIAH-STL
6h 32m1 stop
 Logo
1:00 pm - 11:45 pmSTL-IAH
10h 45m2 stops
Tue, Aug 26 - Thu, Aug 28
United Airlines Logo
7:50 am - 10:01 amIAH-STL
2h 11mnonstop
United Airlines Logo
6:15 am - 8:26 amSTL-IAH
2h 11mnonstop
$234United Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 1
American Airlines Logo
7:00 am - 11:51 amIAH-STL
4h 51m1 stop
American Airlines Logo
5:09 pm - 10:07 pmSTL-IAH
4h 58m1 stop
$237American Airlines
Find Deal
Expert advice

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

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
IAH

Navigating IAH's terminals is easier if you're not flying United, as other airlines use a single terminal.

Read more about IAHby John Walton
STL

Use MetroLink for easy access to St. Louis from STL. The Red Line connects the airport to downtown and other key areas.

Read more about STLby Yulia Denisyuk
Our travel experts
John Walton

John Walton

Expert on IAH

John Walton

John Walton

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.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

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.

Read more
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.

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, Saturday 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 Wednesday, with Saturday 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 August, where tickets cost $313 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is $477 and $440 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $281 on average.

How far in advance should I book a flight from Houston George Bush Intcntl Airport to St. Louis?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Houston George Bush Intcntl Airport to St. Louis, you should book around 2 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$62
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly and prices are also 19% lower on average.
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 3 days, the lowest price for a flight from Houston George Bush Intcntl Airport to St. Louis was $62 for a one-way ticket and $113 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 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 American Airlines?

    The two airlines most popular with KAYAK users for flights from Houston to St. Louis are United Airlines and American Airlines. With an average price for the route of $394 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $342 and an overall rating of 7.2.

  • 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 $233 or less one-way and $227 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

ANA, Air New Zealand, Copa Airlines, +3 more

ANA, Air New Zealand, +4 more

Tuesday

ANA, Air New Zealand, Copa Airlines, +3 more

ANA, Air New Zealand, +4 more

Wednesday

ANA, Air New Zealand, Copa Airlines, +3 more

ANA, Air New Zealand, +4 more

Thursday

ANA, Air New Zealand, Copa Airlines, +3 more

ANA, Air New Zealand, +4 more

Friday

ANA, Air New Zealand, Copa Airlines, +3 more

ANA, Air New Zealand, +4 more

Saturday

ANA, Air New Zealand, Copa Airlines, +3 more

ANA, Air New Zealand, +4 more

Sunday

ANA, Air New Zealand, Copa Airlines, +3 more

ANA, Air New Zealand, +4 more

See more direct flights

Direct returns

Lambert-St Louis to Houston George Bush Intcntl

Monday

ANA, Air New Zealand, Copa Airlines, +2 more

ANA, Air New Zealand, +3 more

Tuesday

ANA, Air New Zealand, Copa Airlines, +2 more

ANA, Air New Zealand, +3 more

Wednesday

ANA, Air New Zealand, Copa Airlines, +2 more

ANA, Air New Zealand, +3 more

Thursday

ANA, Air New Zealand, Copa Airlines, +2 more

ANA, Air New Zealand, +3 more

Friday

ANA, Air New Zealand, Copa Airlines, +2 more

ANA, Air New Zealand, +3 more

Saturday

ANA, Air New Zealand, Copa Airlines, +2 more

ANA, Air New Zealand, +3 more

Sunday

ANA, Air New Zealand, Copa Airlines, +2 more

ANA, Air New Zealand, +3 more

See more direct flights

Reviews of the top 3 airlines serving 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 8900 reviews
8.1Crew
7.7Boarding
6.6Food
7.3Comfort
7.1Entertainment
Airline reviews

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

4.0 OkayAnna, Jul 2025IAH - YYZ
Read more United Airlines reviews

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

Overall it was good. I missed my connection but I was put on another flight.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

My suitcase was completed destroyed. The top part is broken and unusable now.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Very poor delay in dfw was really bad n long

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

The flight got delayed 2.5 hrs due to a maintenance issue that cause a domino effect. American should have spare planes for when something like this happens.

Terrible. Cancelled my original flight. It made getting a boarding pass difficult. The AA employee (in a loud voice, so everyone around could hear) griped at me for not getting a boarding pass 24 hours before. I asked how I was supposed to do that when I had no idea what flight I was going to be on. She said (loudly), “Talk to AA customer service, not me!” I could certainly tell serving customers was not important to her. Our new flight was set to a completely different city. We had to change our rental car, and the price went way up. It took 2-1/2 hours to get checked in. By then our new flight had left. We ended up on stand by and had to split up the family to get to our destination. It cost us the whole first day of the trip. AA needs to employ people who actually care about doing a good job. I suppose those people are getting harder to find, but atleast try.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

Took off on time and successfully avoided weather that looked to be a problem along the way

Severe turbulence. Captain never came on to reassure passengers after things settled down.

My first flight was delayed 5 hours. The 2nd flight was canceled til the next day and the never even tried to compensate for it. Worse I was delayed again on the flight the rebooked me on.

Boarding in Orlando was not good. Giant mob at the gate, should have been lines.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

baggage clamed had to wait over a hour and half for all people on my flight it was terrible

The ticketing agents were rude but then we had a great gate agent very nice we had to ride a buss out to where the plane was parked but it was in some back corner of the airport when we got to the plane the captain who was great btw was cleaning the plane because the same rude ticketing agent told them they we not contracted to vacuum the plane. The ride to las Vegas was fine We had a connecting flight to Dallas. The flight was fine but when we arrived in Dallas everyone who flew on any frontier airlines the picked up bags from baggage claim D15 had to wait over a hour for their bags to start we arrived at 11:30pm ish to the gate we didn't leave the baggage clamed till 12:50 am very not happy and i used to fly frontier 4 times a week for work in Denver i will not be using them again

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

My flight was canceled I was promised a reginf still not received.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

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

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