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$55+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — STL
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Houston George Bush Intcntl to Lambert-St Louis are usually found in October or May, booked 87 days in advance, depart on a Friday or Tuesday and return on a Friday

Cheap 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 November 13, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$110
(Frontier)

One-way from

$55
(Priceline)

Popular in

February

Cheapest in

October

Average price

$445

Good round-trip deal

$331 or less

Good one-way deal

$208 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
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Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Houston George Bush Intcntl to Lambert-St Louis.
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Price to beat on a one-way flight from Houston George Bush Intcntl to Lambert-St Louis.
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Find 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 November 13, 2025.

This Frontier deal was found by Cheapflights users on 11/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:07 pmIAH - STL
1 stop12h 52mFrontier
Mon 12/812:07 pmSTL - IAH
1 stop9h 40mFrontier
Deal found 11/11$110
This Booking.com deal was found by Cheapflights users on 11/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:07 pmIAH - STL
1 stop12h 52mFrontier
Sun 12/143:30 pmSTL - IAH
1 stop26h 59mFrontier
Deal found 11/11$125
This Booking.com deal was found by Cheapflights users on 11/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:07 pmIAH - STL
1 stop26h 26mFrontier
Sun 12/73:30 pmSTL - IAH
1 stop26h 59mFrontier
Deal found 11/10$129
This Gotogate deal was found by Cheapflights users on 11/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:04 amIAH - STL
1 stop8h 25mFrontier
Sun 11/3010:24 amSTL - IAH
1 stop23h 15mFrontier
Deal found 11/13$144
This Booking.com deal was found by Cheapflights users on 11/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:08 pmIAH - STL
1 stop27h 49mFrontier
Mon 12/14:13 pmSTL - IAH
1 stop26h 16mFrontier
Deal found 11/10$145
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Fri 11/2111:48 amIAH - STL
1 stop22h 14mFrontier
Mon 11/247:43 pmSTL - IAH
1 stop15h 10mFrontier
Deal found 11/11$154
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Fri 11/2111:48 amIAH - STL
1 stop22h 14mFrontier
Thu 11/277:57 pmSTL - IAH
1 stop14h 56mFrontier
Deal found 11/11$156
This Booking.com deal was found by Cheapflights users on 11/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:17 pmIAH - STL
1 stop26h 16mFrontier
Sun 12/73:30 pmSTL - IAH
1 stop26h 59mFrontier
Deal found 11/12$158
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 11/225:32 pmIAH - STL
1 stop20h 57mFrontier
Mon 11/247:43 pmSTL - IAH
1 stop15h 10mFrontier
Deal found 11/11$168
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 11/225:32 pmIAH - STL
1 stop20h 57mFrontier
Sun 11/237:57 pmSTL - IAH
1 stop14h 56mFrontier
Deal found 11/11$179

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 November 13, 2025.
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

George Bush Intcntl

Fly to

St. Louis

Route

Depart

Return

Price

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 1/8

7:41 pm-12:12 pm

1 stop16h 31m

Lambert-St Louis

Mon 1/12

7:43 pm-6:21 pm

1 stop22h 38m

$111

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Mon 2/2

6:45 am-12:50 pm

1 stop6h 05m

Lambert-St Louis

Wed 2/4

3:46 pm-11:39 pm

1 stop7h 53m

$128

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 2/6

4:47 pm-2:46 pm

1 stop21h 59m

Lambert-St Louis

Wed 2/11

7:43 pm-5:17 pm

2 stops21h 34m

$161

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Mon 2/2

12:16 pm-10:33 pm

1 stop10h 17m

Lambert-St Louis

Wed 2/4

7:43 pm-10:37 am

1 stop14h 54m

$190

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Tue 12/23

9:34 pm-10:33 pm

1 stop24h 59m

Lambert-St Louis

Wed 1/7

7:43 pm-9:30 am

1 stop13h 47m

$217

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 12/20

9:30 am-9:40 am

2 stops24h 10m

Lambert-St Louis

Mon 1/5

4:27 pm-7:04 pm

1 stop26h 37m

$238

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 11/26

8:54 pm-2:29 pm

1 stop17h 35m

Lambert-St Louis

Sun 11/30

10:24 am-9:39 am

1 stop23h 15m

$265

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Mon 11/24

5:46 pm-11:57 pm

1 stop6h 11m

Lambert-St Louis

Sat 11/29

4:13 pm-9:39 am

1 stop17h 26m

$266

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Tue 12/16

7:55 pm-9:58 pm

Nonstop2h 03m

Lambert-St Louis

Tue 1/6

6:00 am-8:30 am

Nonstop2h 30m

$277

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 11/27

6:04 am-2:29 pm

1 stop8h 25m

Lambert-St Louis

Sun 11/30

9:54 pm-6:29 pm

2 stops44h 35m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 22 results
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 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 CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Houston George Bush Intcntl Airport-St. Louis flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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

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

Use this chart to determine the optimal time to book a round-trip flight from George Bush Intcntl to St. Louis. Price data was last updated on November 7, 2025.

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston George Bush Intcntl Airport to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $117). Flying from Houston George Bush Intcntl Airport to St. Louis in November is currently the most expensive (average of $276). 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 November 13, 2025.

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 30% versus a flight in the morning.

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 November 2, 2025.

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

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-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.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston George Bush Intcntl Airport to St. Louis trip
Airports
IAH

Check the IAH Depart tab online for current security wait times to plan your arrival at the airport efficiently.

Read more about IAHby Evie Carrick
STL

Use the MetroLink light rail for a convenient and economical way to reach downtown St. Louis from STL Airport.

Read more about STLby Taryn White
Our travel experts
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

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

Taryn White

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 November 13, 2025.
Read reviews from past customers who have flown United Airlines, American 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
9,015 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

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
9,015 reviews
United Airlines
7.4
Good
9,015 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

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
American Airlines
7.2
Good
11,050 reviews
United Airlines
7.4
Good
9,015 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

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
5.8
Fair
3,114 reviews
United Airlines
7.4
Good
9,015 reviews

Comfort

7.3

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

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 14 inbound flights from Houston George Bush Intcntl per day. You should also have plenty of airline options to choose from since 3 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 Frontier fly from Houston George Bush Intcntl Airport to St. Louis in about 16h 31m. The time it takes to get you to your destination can typically vary by up to . There are 668 mi between Houston George Bush Intcntl Airport and St. Louis.

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

    According to our current data, Frontier ($109), United Airlines ($177), and American Airlines ($180) offers the cheapest pricing from Houston George Bush Intcntl Airport to St. Louis. These flights start at 71% lower than the current average price 3 months from now.

  • 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 Mesa Airlines (96%), ANA (90%) and United Airlines (89%).

  • 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 $197. On average you can expect to pay $468. The most popular route, (Houston George Bush Intcntl - Lambert-St Louis), can usually be booked for $139.

  • 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, October is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $117). Flying from Houston George Bush Intcntl Airport to St. Louis in November is currently the most expensive (average of $276). 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
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Top 3 airlines flying from George Bush Intcntl to St. Louis

Discover the top 3 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$109Average$230FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$177Average$380FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$180Average$350FlexibilityNo cancel feeOn-time71%

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