IAH - STL

$58 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 10/18. 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

Fri, Oct 24 - Sun, Oct 26
United Airlines Logo
5:00 pm - 6:57 pmIAH-STL
1h 57mnonstop
United Airlines Logo
6:15 am - 8:33 amSTL-IAH
2h 18mnonstop
$115United Airlines
Find Deal
Tue, Nov 25 - Mon, Dec 1
United Airlines Logo
4:45 pm - 6:47 pmIAH-STL
2h 02mnonstop
United Airlines Logo
8:20 am - 10:40 amSTL-IAH
2h 20mnonstop
$117United Airlines
Find Deal
Wed, Oct 8 - Mon, Oct 13
United Airlines Logo
7:57 pm - 10:00 pmIAH-STL
2h 03mnonstop
United Airlines Logo
6:15 am - 8:26 amSTL-IAH
2h 11mnonstop
$131United Airlines
Find Deal
Thu, Oct 2 - Sun, Oct 5
Frontier Logo
6:05 am - 3:04 pmIAH-STL
8h 59m1 stop
Frontier Logo
4:00 pm - 9:52 pmSTL-IAH
5h 52m1 stop
$143Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Frontier Logo
11:39 am - 8:37 pmIAH-STL
8h 58m1 stop
Frontier Logo
4:00 pm - 9:53 pmSTL-IAH
5h 53m1 stop
$152Frontier
Find Deal
Thu, Oct 30 - Sat, Nov 1
American Airlines Logo
6:00 am - 1:44 pmIAH-STL
7h 44m1 stop
American Airlines Logo
5:09 pm - 10:07 pmSTL-IAH
4h 58m1 stop
$159American Airlines
Find Deal
Sat, Oct 4 - Thu, Oct 9
 Logo
10:02 pm - 9:54 amIAH-STL
11h 52m2 stops
 Logo
11:32 am - 4:47 pmSTL-IAH
5h 15m1 stop
Sat, Oct 4 - Mon, Oct 6
 Logo
10:02 pm - 9:54 amIAH-STL
11h 52m2 stops
 Logo
4:00 pm - 4:47 pmSTL-IAH
24h 47m1 stop
Sun, Nov 9 - Sat, Nov 15
Delta Logo
5:15 am - 10:49 amIAH-STL
5h 34m1 stop
Delta Logo
6:00 am - 12:31 pmSTL-IAH
6h 31m1 stop
$197Delta
Find Deal
Fri, Oct 17 - Mon, Oct 20
American Airlines Logo
6:03 pm - 11:49 pmIAH-STL
5h 46m1 stop
American Airlines Logo
8:42 am - 5:36 pmSTL-IAH
8h 54m1 stop
$201American Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
Navigating IAH's terminals is easier with non-United flights.
Use MetroLink for easy access to St. Louis from STL.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from $115 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 48% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 17% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$115
Overall average: $318
United Airlines
Fri 10/24Sun 10/26
IAH - STL • Non-stop
Cheapest one-way
$58
Typical prices: $220-406
United Airlines
Sat 10/18
IAH - STL • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
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, Friday 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 October, where tickets cost $318 (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 $445 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 $227 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 4 weeks before departure, which saves you about 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJuly
Cheapest flight$58
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 13% 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 $58 for a one-way ticket and $115 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 $401 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 $258 or less one-way and $262 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 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 8929 reviews
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
Airline reviews

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

6.0 GoodKaren Andrea, Sep 2025IAH - MCO
Read more United Airlines reviews

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

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.

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Our bags took a long time to get unloaded once we landed.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

My Internet did not work for Outlook email or basically anything. I paid for one hour of in-flight usage and it was terrible. I spent a lot of time on different sites and browsers with no luck and a lot of frustration. Other than that, the flight was on time, crew was nice, service was fine. Seat was OK even though I paid for the extra 6 inches. I cannot imagine how tight the seats in the back must be.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

Crew should be nicer and emphatic with customers. Same cookies as the past 20 years. Seat are ok and the plane was clean though it was delayed.

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

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

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

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