STL - IAH

$62 Find Cheap Flights from St. Louis to Houston George Bush Airport - 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 St. Louis to George Bush Intcntl departing on 9/23. 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
$123
Typical prices: $228-$562
Frontier
Thu 8/6Mon 8/10
STL - IAH • 1 stop
Cheapest non-stop
$217
Typical prices: $493-$567
United Airlines
Thu 8/6Tue 8/18
STL - IAH • Non-stop
Nonstop flights
You can fly direct with United Airlines. Average duration is 2h 15m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $237 (round-trip)
Shortest trip • 4h 27m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 36% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
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We hope you love your trip to George Bush Intcntl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to George Bush Intcntl 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 St. Louis to George Bush Intcntl

Thu, Aug 6 - Mon, Aug 10
Frontier Logo
6:34 pm - 11:27 am
STL
-
IAH
16h 53m
1 stop
Frontier Logo
8:02 pm - 5:37 pm
IAH
-
STL
21h 35m
1 stop
$123Frontier
Thu, Aug 6 - Mon, Aug 10
Frontier Logo
6:34 pm - 7:20 am
STL
-
IAH
12h 46m
1 stop
Frontier Logo
8:02 pm - 5:37 pm
IAH
-
STL
21h 35m
1 stop
$125Frontier
Thu, Aug 6 - Mon, Aug 10
Frontier Logo
6:34 pm - 7:20 am
STL
-
IAH
12h 46m
1 stop
Frontier Logo
8:02 pm - 5:37 pm
IAH
-
STL
21h 35m
1 stop
$126Frontier
Tue, Aug 4 - Wed, Aug 5
Frontier Logo
6:34 pm - 7:20 am
STL
-
IAH
12h 46m
1 stop
Frontier Logo
8:02 pm - 5:37 pm
IAH
-
STL
21h 35m
1 stop
$127Frontier
Mon, Aug 24 - Mon, Aug 31
Frontier Logo
6:17 pm - 7:20 am
STL
-
IAH
13h 03m
1 stop
Frontier Logo
11:32 am - 5:22 pm
IAH
-
STL
5h 50m
1 stop
$128Frontier
Wed, Sep 23 - Sat, Sep 26
Frontier Logo
10:35 am - 10:06 pm
STL
-
IAH
11h 31m
1 stop
Frontier Logo
7:00 am - 9:40 am
IAH
-
STL
26h 40m
1 stop
$132Frontier
Mon, Aug 3 - Wed, Aug 5
Frontier Logo
4:57 pm - 7:20 am
STL
-
IAH
14h 23m
1 stop
Frontier Logo
8:02 pm - 5:37 pm
IAH
-
STL
21h 35m
1 stop
$133Frontier
Tue, Aug 4 - Fri, Aug 7
Frontier Logo
6:34 pm - 7:20 am
STL
-
IAH
12h 46m
1 stop
Frontier Logo
8:02 pm - 8:57 am
IAH
-
STL
12h 55m
1 stop
$136Frontier
Fri, Aug 7 - Sat, Aug 15
Frontier Logo
4:57 pm - 10:29 pm
STL
-
IAH
5h 32m
1 stop
Frontier Logo
8:02 pm - 5:37 pm
IAH
-
STL
21h 35m
1 stop
$138Frontier
Mon, Aug 3 - Thu, Aug 6
Frontier Logo
4:57 pm - 7:20 am
STL
-
IAH
14h 23m
1 stop
Frontier Logo
8:02 pm - 8:57 am
IAH
-
STL
12h 55m
1 stop
$142Frontier
Booking Insights

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

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

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

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

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

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

When flying from St. Louis to Houston George Bush Airport, you should consider leaving on a Friday and avoid Mondays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Wednesdays and the most expensive ones on Mondays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Houston George Bush Intcntl Airport, 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 St. Louis to Houston George Bush Intcntl Airport is January, where tickets cost $243 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $488 and $426 respectively.

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

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 $356, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Houston George Bush Intcntl Airport, 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 St. Louis to Houston George Bush Intcntl Airport, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

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

 
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 seasonAugust
Cheapest flight$62
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from St. Louis to Houston George Bush Airport

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

Are your dates flexible? Find out the best times to travel from St. Louis to George Bush Intcntl 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 St. Louis to Houston George Bush Airport flights

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

    In the last 5 days, the lowest price for a flight from St. Louis to Houston George Bush Intcntl Airport was $62 for a one-way ticket and $123 for a round-trip.

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

    No

  • Which airports will I be using when flying from St. Louis to Houston George Bush Airport?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Houston George Bush Airport, also known as Houston George Bush Intcntl.

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

    JetBlue, American Airlines, Alaska Airlines, and Delta offer inflight Wi-Fi service on the St. Louis to Houston George Bush Airport flight route.

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

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

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

    oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Houston George Bush Airport, with oneworld being the most commonly used for this route.

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

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

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Houston are United Airlines and American Airlines. With an average price for the route of $418 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 $456 and an overall rating of 7.1.

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

    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 St. Louis to Houston George Bush Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston George Bush Airport from St. Louis 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 St. Louis to Houston George Bush Airport?

    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 Houston George Bush Airport with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and IAH 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 St. Louis to Houston George Bush Airport?

    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 Houston George Bush Airport from St. Louis 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 St. Louis to Houston George Bush Intcntl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $352 or less one-way and $550 or less round-trip.

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

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

Direct departures

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

Direct returns

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

Reviews of the top 3 airlines serving from St. Louis to George Bush Intcntl

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Houston. 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 St. Louis to George Bush Intcntl? 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 9981 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
6.7Food
8.1Crew
Airline reviews

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

2.0 MediocreMichael, Jul 2026
LAX - IAH
Read more United Airlines reviews

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

The flight was delayed, they didn’t even have water for the toilets or for drinks

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

The flight had a delay but I made it to my connection. Flight was smooth overall

No screens or meal options. Freezing cold. Dirty seats. Left late.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

Flight was canceled 12 hours before take-off due to “weather”

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

The plane was very creaky and lots of ringing. Plane was dirty and dingy. I couldn't hear the captain's announcements from the flight deck. Not sure if it was the captain or the audio equipment, but good thing there wasn't an emergency where we needed clear instructions. The overhead compartments were clearly full, but the flight crew allowed people to stand in the back with their carry on luggage. Then after everyone boarded, they had to go to the front to gate check their luggage because there was no room for their bags and then they returned to their seats...such a waste of time when clearly the overhead compartments were full when they originally boarded.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

First time flying internationally with AA and probably my last. Not military friendly at all. Didn't allow free checked bag for military family members (dependents) on orders like other airlines. We were charged $100 for baggage weight overage (5 lbs!)even though we had military orders allowing us extra.. Didn’t allow military members to board early. Inefficient and long wait time to board. Seats are smaller and more uncomfortable than other airlines.. no drink service for over 7 hrs of flight! After initial meal was served, the crew never offered a snack or drinks until the breakfast's was served 1 1/2 hrs before landing. Overall expensive and poor experience for the entire flight.

Boarding process was good. I was assigned the most rear (non-reclining) seat in both directions, which wasn't great.

Awful. We had an 8 hour mechanical delay- no vouchers and no kind/courtesy/professional representatives in the entire airport. Not only was it a terrible experience for both my 7 year old and myself, I still have not heard back from American about how they’re going to correct it- I’ve sent 2 or 3 emails about our experience- which was just awful. Not to mention according to national traveling laws, we should be reimbursed… but of course they’re not responding.

Overall it was good but not great. The aircraft was an old and seats didn’t recline in business class unless you kept playing around with it.

The plane was subbed for another last minute, the gate was changed last minute. Could live with that but we boarded and there was a delay which totaled an hour in the end. There was a technical issue which meant wheels needed to remain out for ten mins after take off. My USB phone charger was broken as was the headphone jack which meant I could t enjoy the IFE and could use my phone after a few hours. Even the map function on the plane failed to work after a few hours.

The flight was delayed and we were told the airplane is on its way to the gate from the hangar. We were told this for 2 hours and the flight was continually delayed in ~30 minute increments. Then we ended up having a new airplane. The issue wasn’t clearly communicated and it left everyone feeling confused about when we would actually be leaving. Whenever they communicated a new boarding time it felt arbitrary and random. The boarding process was a mess and disorganized, which made it last longer than necessary. Landing was rough. Seats were uncomfortable.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

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

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

The worst service , the agents from the counter are really bad . Poor customer service . They didnt help me to get in the flight . I was on line when they close the flight without telling and I couldn’t board the plane . I will like to get my money back ey back because it was their fault. Really bad management , bad manners, bad additud

Very delayed with little to no communication from the captain or flight crew. All announcements made were not audibly understood by passengers. Very poor communication. After arrival it took approximately 20 minutes to get a jet bridge to the plane.

I fly Frontier often and generally don't have any issues. For some reason, the Denver to Houston's George Bush Intercontinental (IAH) flight always needs to wait on the tarmac in Houston because a gate is not available after landing. I've been stuck for as little as 15 minutes and as much as a little over an hour. I know only fly the Frontier Denver to IAH route when there is not an available flight to Houston Hobby (HOU).

Terrible Y lost my connection to Mexico, nobody of your company help me And y pay a lot of money for my baggage Until now I continue in the Houston airport I vneed you return my money

Everything was good, 20/30 minutes late waiting on a crew member. It’s hard to keep employees. Or serious employees I know. I remember one flight from Houston of Frontiers was almost 18 hours late. And another 4 hours late very poor. But I would rather be late and safe than the on the news. Thank you.

I have come to accept Frontier as an absolute no-frills airline, paying for everything I want. A 4.5-hour flight should provide me with a complimentary beverage—rather, $4.9x for a soda. Or a bottle of water ought to be extended at no cost. 4 beers are on the menu, but only 1 type of beer is available (at $9.95). Also, so many restrictions to using a voucher from Barclay‘s Credit Card. Finally, try to reach a live agent for Frontier- impossible!

Good - Leg spar, cleanliness, and on time performance. Bad - No snacks and entertainment.

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

Information on your arrival and departure airports