STL - IAH

$60 Find Cheap Flights from St. Louis to Houston George Bush Airport

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 1/31. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Houston George Bush Intcntl Airport

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

Cheapest round-trip
$146
Overall average: $411
Frontier
Thu 2/26Wed 3/4
STL - IAH • 1 stop
Cheapest non-stop
$313
Typical prices: $317-$532
United Airlines
Thu 2/19Mon 2/23
STL - IAH • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Avoid peak hours at STL to reduce security wait times.
Use rideshare apps from IAH, except at Terminal E.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 45% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 20% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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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, Feb 26 - Wed, Mar 4
Frontier Logo
10:11 pm - 9:17 pm
STL
-
IAH
23h 06m
1 stop
Frontier Logo
8:45 am - 3:53 pm
IAH
-
STL
7h 08m
1 stop
$146Frontier
Fri, Feb 27 - Sat, Mar 7
Frontier Logo
1:59 pm - 12:33 am
STL
-
IAH
10h 34m
1 stop
Frontier Logo
9:15 pm - 5:57 am
IAH
-
STL
8h 42m
1 stop
$170Frontier
Mon, Mar 9 - Wed, Mar 11
Frontier Logo
2:09 pm - 10:56 pm
STL
-
IAH
8h 47m
1 stop
Frontier Logo
4:46 pm - 11:19 pm
IAH
-
STL
6h 33m
1 stop
$174Frontier
Sun, Feb 15 - Sun, Feb 22
Multiple Airlines Logo
3:49 pm - 10:41 pm
STL
-
IAH
6h 52m
1 stop
Multiple Airlines Logo
5:45 am - 6:51 am
IAH
-
STL
25h 06m
1 stop
$196Multiple Airlines
Sun, Feb 15 - Sun, Feb 22
Multiple Airlines Logo
3:49 pm - 8:00 am
STL
-
IAH
40h 11m
2 stops
Multiple Airlines Logo
5:45 am - 6:51 am
IAH
-
STL
25h 06m
1 stop
$200Multiple Airlines
Sun, Feb 8 - Sun, Feb 15
Multiple Airlines Logo
5:42 pm - 11:11 am
STL
-
IAH
17h 29m
1 stop
Multiple Airlines Logo
6:00 am - 6:51 am
IAH
-
STL
24h 51m
1 stop
$201Multiple Airlines
Fri, Jan 30 - Wed, Feb 4
Multiple Airlines Logo
7:39 pm - 6:15 pm
STL
-
IAH
22h 36m
1 stop
Multiple Airlines Logo
4:35 pm - 11:33 pm
IAH
-
STL
30h 58m
2 stops
$202Multiple Airlines
Mon, Mar 2 - Wed, Mar 18
Frontier Logo
3:49 pm - 7:04 pm
STL
-
IAH
27h 15m
1 stop
Frontier Logo
6:00 am - 11:19 pm
IAH
-
STL
17h 19m
2 stops
$203Frontier
Wed, Feb 25 - Fri, Mar 6
Frontier Logo
4:51 pm - 11:32 pm
STL
-
IAH
6h 41m
1 stop
Frontier Logo
5:49 pm - 1:03 pm
IAH
-
STL
19h 14m
2 stops
$204Frontier
Fri, Feb 6 - Sun, Feb 8
Multiple Airlines Logo
5:42 pm - 10:33 am
STL
-
IAH
16h 51m
2 stops
Multiple Airlines Logo
6:05 pm - 6:51 am
IAH
-
STL
12h 46m
1 stop
$205Multiple Airlines
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.

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 Sundays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

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 August, where tickets cost $303 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $422 and $420 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 3 weeks before departure, which saves you about 45% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 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.
Airports
STL

Avoid peak hours at STL to minimize wait times in security lines and crowded terminals.

IAH

Use rideshare apps like Uber or Lyft for convenient transport from IAH, but note pickup is not available at Terminal E.

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

Good to know

Low seasonJuly
Cheapest flight$60
Best time to beat the crowds but there is an average 11% increase 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 3 days, the lowest price for a flight from St. Louis to Houston George Bush Intcntl Airport was $60 for a one-way ticket and $139 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?

    American Airlines, JetBlue, 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 $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 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 $203 or less one-way and $427 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 9144 reviews
7.7Boarding
8.1Crew
6.6Food
7.1Entertainment
7.3Comfort
Airline reviews

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

8.0 ExcellentMary, Jan 2026
PHX - IAH
Read more United Airlines reviews

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

United is an incompetent airline. They parked the plane on the tarmac for an hour after arriving because they “didn’t have a gate available” it was actually some sort of lie because as we de planed there were approximately 9 open and manned and empty gates that we walked past. Many people on the flight missed connections for the hour long sit on the tarmac. Utterly baffling and incompetent behavior from United flight ops.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Even though we were delayed, we were able to make our connection

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

The flight was good. We had to spend almost an hour on the tarmac when we arrived in Dallas. Waiting for a gate. What’s the point of arriving early if you have no gate to park at?

Lower WiFi prices; allow us to see our flight on a map; more variety of drink choices.

Kayak was among the missing. There was not the usual advice regarding next gate after arriving in Dallas. No communication after the reminder to check in before the Moline flight. What happened?

They should have allowed for extra time to de-ice the plane before boarding passengers. This delayed us about 10-15 mins after we boarded. Overall experience was fine. Crew was friendly and on top of everything. We didn’t have any issues during the flight.

Our flight from Eagle to Vail was delayed to the point we missed our connection to Savannah. Now we’re a family of 4 in a hotel room with luggage, no toiletries, no clean clothes. Gate attendant said the delay was mechanical but it was put in the system as something else so no compensation. That’s just wrong.

I take this flight about 6-8 times per year. It is convenient and saves an hour or two by skipping PDX, SEA, PHX, or ORD (but it takes longer to get bags to the carousel than Alaska Airlines). I wish the food service were better (but they might cut back on it because it is a red-eye). The WifI seems to go down about an hour out of Anchorage, and then comes back about an hour later...so be warned if this is an issue for you.

WiFi didn’t work the entire flight. Very disappointing. Minimal food and options - sadly the state of current affairs. All other aspects of the flight were fine.

For whatever reason, the flight was not catered -we were told it would be a 45 minute delay waiting for catering - so no food. There were opened candy and peanuts in the seatback pocket. Flight landed early in DFW but due to the assigned gate not being available, we sat on the ground for 30 minutes waiting for the gate to open - making the flight actually arrive at the gate late.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

A little late at the start but all worked out well.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

One of the worst travel experiences I've had. Had a flight scheduled with CVG to RSW on VLSWQX this morning departing at 5:30. Two individuals at the gate and one was in training. Not her fault but she didn't have the ability to check people in resulting in at least 15 families that didn't make it on the plane because they weren't checked into the system in time. When arriving at the airport to drop off our prepaid checked bags, the bag drop off agent asked if we could check our bags at the gate because of the long line. We said no problem so arrived at the gate by 5:00. They told those people that had previously paid for checked bags to stand off to the side while they let others that either didn't have a checked bag or their bag was already on the plan through. Realizing the gate workers had an issue, they either called for help or this lady showed up late for work as she didn't arrive until 5:15. The worker who had been there training the other individual and working diligently to make sure all passengers got on board. He even said that at one point all people that are currently in line are fine but asked the person in training to stand outside the ticketing area around 5:15 to notify any late travels that the flight was in boarding process and they arrrived too late. At that point, we're sill standing off to the side with our pre-paid checked bags patiently waiting. When the new lady arrived she couldn't have been more rude. It was an awful seen. Essentially they had asked for those without an assigned seat to board last, those with pre-paid checked bag stand off to the site and any traveling with a larger items that needed to be checked at the gate (such as a stroller), wait on the side. They realized that the flight needed to leave on time so the gate attendant shut the gate. So anyone without a seat assignment, those that had pre-checked bags, and the worst one I saw was a mother with two infant children was in line with use because she was asked to stand to the side because her stroller. When they shut the door to the plan they told her she could no longer get on. Her checked bags were already on the plane with her car keys in them, and the lady told her we couldn't accept anyone else on because the door was shut. She didn't even have a way to get home from the airport. Truely evil behavior. I've flown Frontier enough to know customer service is not a top priority in the company's mission, but this was an all-time low. I'm sending this after an 18 hour drive that our family just completed to Bonita Springs . I felt really bad for the lady being trained and the other individual trying to help, but when the new lady came to the gate she was truly one of the rudest individuals I've ever met. One lady had been there since 4am but because she didn't have an assigned seat they wouldn't let her on the plan.

I loved the staff on the plane. So friendly and helpful! However, there was an argument and misunderstanding by the staff and a customer at the gate, and the staff member was being unprofessional. When we arrived in Atlanta, we waited 1.5 hrs for our luggage to arrive. When I asked the airport attendant, they said Frontier had the longest wait for luggage out of any airlines, and that they could not be held responsible for the delay.

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

Information on your arrival and departure airports