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$60+ Cheap flights from George Bush Intcntl (IAH) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — STL
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
1 adult, Economy
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Cheap flight deals from George Bush Intcntl to St. Louis

Cheapest flights from George Bush Intcntl to St. Louis
Explore the most affordable flight options available from George Bush Intcntl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:44 pm
IAH
-
STL
1 stop12h 56m
Frontier
Sat 10/2410:35 am
STL
-
IAH
1 stop11h 31m
Frontier
Deal found 7/24$124
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:32 pm
IAH
-
STL
1 stop24h 50m
Frontier
Mon 8/316:17 pm
STL
-
IAH
1 stop13h 03m
Frontier
Deal found 7/27$125
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:32 am
IAH
-
STL
1 stop5h 50m
Frontier
Mon 8/316:17 pm
STL
-
IAH
1 stop13h 03m
Frontier
Deal found 7/27$129
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/264:32 pm
IAH
-
STL
1 stop24h 50m
Frontier
Fri 8/286:17 pm
STL
-
IAH
1 stop13h 03m
Frontier
Deal found 7/24$130
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
IAH
-
STL
1 stop11h 22m
Frontier
Mon 8/316:17 pm
STL
-
IAH
1 stop13h 03m
Frontier
Deal found 7/27$133
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:30 am
IAH
-
STL
1 stop8h 47m
Frontier
Fri 9/112:29 pm
STL
-
IAH
1 stop16h 48m
Frontier
Deal found 7/28$135
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/194:32 pm
IAH
-
STL
1 stop24h 50m
Frontier
Sun 8/236:17 pm
STL
-
IAH
1 stop13h 03m
Frontier
Deal found 7/24$138
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/311:32 am
IAH
-
STL
1 stop5h 50m
Frontier
Mon 9/76:17 pm
STL
-
IAH
1 stop13h 03m
Frontier
Deal found 7/27$145
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:35 pm
IAH
-
STL
1 stop20h 05m
Frontier
Mon 10/2610:35 am
STL
-
IAH
1 stop28h 30m
Frontier
Deal found 7/25$146

Find flight deals from George Bush Intcntl to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$124
(Kiwi.com)

One-way from

$60
(Kiwi.com)

Popular in

April

Cheapest in

November

Average price

$414

Good round-trip deal

$323 or less

Good one-way deal

$294 or less
Provider with most accurate pricing for Houston George Bush Intcntl-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Houston George Bush Intcntl-Lambert-St Louis flights.
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From Houston George Bush Intcntl to Lambert-St Louis
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One-way flight from Houston George Bush Intcntl to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($159 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Houston George Bush Intcntl to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Houston George Bush Intcntl to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from George Bush Intcntl to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 8/19

7:00 am-11:46 am

1 stop4h 46m

Lambert-St Louis

Wed 8/19

5:23 pm-11:52 pm

1 stop6h 29m

$217

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 10/10

8:15 pm-10:30 pm

Nonstop2h 15m

Lambert-St Louis

Wed 10/14

3:12 pm-5:25 pm

Nonstop2h 13m

$297

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 8/29

6:15 pm-8:27 pm

Nonstop2h 12m

Lambert-St Louis

Mon 8/31

3:13 pm-5:25 pm

Nonstop2h 12m

$297

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 10/22

5:29 am-10:51 am

1 stop5h 22m

Lambert-St Louis

Sun 10/25

7:20 pm-11:55 pm

1 stop4h 35m

$297

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 10/1

8:15 pm-10:30 pm

Nonstop2h 15m

Lambert-St Louis

Thu 10/8

6:15 am-8:27 am

Nonstop2h 12m

$297

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 10/3

1:45 pm-7:41 pm

1 stop5h 56m

Lambert-St Louis

Tue 10/6

6:15 am-8:27 am

Nonstop2h 12m

$342

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 8/21

8:00 am-10:10 am

Nonstop2h 10m

Lambert-St Louis

Fri 8/28

11:15 am-1:32 pm

Nonstop2h 17m

$347

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sun 11/8

5:29 am-10:55 am

1 stop5h 26m

Lambert-St Louis

Sun 11/8

5:35 pm-10:02 pm

1 stop4h 27m

$357

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 8/26

8:00 am-10:10 am

Nonstop2h 10m

Lambert-St Louis

Fri 8/28

6:15 am-8:32 am

Nonstop2h 17m

$362

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 8/28

3:34 pm-9:17 pm

1 stop5h 43m

Lambert-St Louis

Fri 9/4

8:35 am-10:52 am

Nonstop2h 17m

$372

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from George Bush Intcntl to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from George Bush Intcntl to St. Louis in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Houston George Bush Intcntl Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Houston George Bush Intcntl Airport-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from George Bush Intcntl to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from George Bush Intcntl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to St. Louis

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

Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $323). Flying from Houston George Bush Intcntl Airport to St. Louis in April is currently the most expensive (average of $741). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAH to STL?

Find hourly flight availability from George Bush Intcntl to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2026.

When flying from Houston George Bush Intcntl Airport to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 37% versus a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from George Bush Intcntl to St. Louis. Price data was last updated on July 25, 2026.

Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to St. Louis flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Houston George Bush Intcntl Airport to St. Louis?

Airfare is below average for this route at the moment.

Houston George Bush Intcntl Airport to St. Louis flights typically cost between $311 and $734 in October.
The cheapest round-trip price found within the last 5 days was $124 on Frontier (Oct 21-Oct 24).

The best insider tips for Houston George Bush Intcntl Airport to St. Louis flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston George Bush Intcntl Airport to St. Louis trip
Our travel experts
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated July 29, 2026.
Read reviews from past customers who have flown United Airlines and Frontier from Houston George Bush Intcntl Airport to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,050 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
10,050 reviews
United Airlines
7.4
Good
10,050 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Frontier
5.6
Fair
2,749 reviews
United Airlines
7.4
Good
10,050 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Houston George Bush Intcntl?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Houston George Bush Intcntl to St. Louis. You should not have trouble finding flights to Lambert-St Louis from Houston George Bush Intcntl; the airport handles an average of 16 inbound flights from Houston George Bush Intcntl per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the St. Louis airport from Houston George Bush Intcntl. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

  • How long is the flight from Houston George Bush Intcntl Airport to St. Louis?

    Airlines like Delta and United Airlines fly from Houston George Bush Intcntl Airport to St. Louis in about 2h 15m. The time it takes to get you to your destination can typically vary by up to 2h 31m. There are 668 mi between Houston George Bush Intcntl Airport and St. Louis. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Houston George Bush Intcntl Airport to St. Louis round-trip?

    According to our current data, Frontier ($111), and United Airlines ($251) offers the cheapest pricing from Houston George Bush Intcntl Airport to St. Louis. These flights start at 75% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Houston George Bush Intcntl Airport to St. Louis one-way?

    The cheapest airlines for a one-way flight from Houston George Bush Intcntl Airport to St. Louis are Frontier ($95), American Airlines ($142), and United Airlines ($158).

  • What are the most reliable airlines from Houston George Bush Intcntl Airport to St. Louis?

    The top 3 most reliable airlines when flying from Houston George Bush Intcntl Airport to St. Louis are United Airlines (89%), SkyWest Airlines (88%) and Mesa Airlines (88%).

  • What are the cheapest flights from Houston George Bush Intcntl Airport to St. Louis?

    The cheapest flight price from Houston George Bush Intcntl Airport to St. Louis is $231. On average you can expect to pay $472. The most popular route, (Houston George Bush Intcntl - Lambert-St Louis), can usually be booked for $197.

  • Can I find deals for flights from George Bush Intcntl to St. Louis that include hotel bookings?

    Yes. In addition to deals on George Bush Intcntl to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from George Bush Intcntl to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to St. Louis.

  • Can I find deals for business class flights from George Bush Intcntl to St. Louis?

    Yes. Cheapflights offers flight deals from George Bush Intcntl to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $323). Flying from Houston George Bush Intcntl Airport to St. Louis in April is currently the most expensive (average of $741). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington

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Alternative routes for George Bush Intcntl to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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George Bush Intcntl to Kansas City flights
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Top 2 airlines flying from George Bush Intcntl to St. Louis

Discover the top 2 airlines that operate flights from George Bush Intcntl to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$111Average$234FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$251Average$500FlexibilityNo cancel feeOn-time69%

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