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$76+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — STL
Jul 15 — Jul 221
Wed 7/15
Wed 7/22
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 June 15, 2026.

This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:14 pm
IAH
-
STL
1 stop25h 09m
Frontier
Sun 7/124:09 pm
STL
-
IAH
1 stop16h 36m
Frontier
Deal found 6/11$288
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Tue 6/236:30 am
IAH
-
STL
1 stop11h 00m
Frontier
Sun 8/26:34 pm
STL
-
IAH
2 stops20h 16m
Frontier
Deal found 6/11$290
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 10/98:44 pm
IAH
-
STL
1 stop12h 56m
Frontier
Sat 10/1710:35 am
STL
-
IAH
1 stop11h 31m
Frontier
Deal found 6/11$292
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:55 pm
IAH
-
STL
1 stop11h 57m
Frontier
Wed 7/88:08 pm
STL
-
IAH
2 stops11h 12m
Frontier
Deal found 6/10$293
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/108:02 pm
IAH
-
STL
1 stop12h 55m
Frontier
Sun 7/126:34 pm
STL
-
IAH
2 stops20h 16m
Frontier
Deal found 6/11$294
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Wed 10/78:44 pm
IAH
-
STL
1 stop12h 56m
Frontier
Sat 10/1010:35 am
STL
-
IAH
2 stops10h 29m
Frontier
Deal found 6/11$295
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Tue 7/78:50 am
IAH
-
STL
1 stop8h 47m
Frontier
Thu 7/98:08 pm
STL
-
IAH
2 stops13h 55m
Frontier
Deal found 6/15$297
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 7/176:00 am
IAH
-
STL
2 stops17h 59m
Frontier
Sun 7/196:34 pm
STL
-
IAH
1 stop12h 46m
Frontier
Deal found 6/14$298
This Frontier deal was found by Cheapflights users on 6/11. 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.
Fri 7/176:30 am
IAH
-
STL
1 stop12h 53m
Frontier
Sat 7/184:57 pm
STL
-
IAH
1 stop5h 42m
Frontier
Deal found 6/11$300
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/226:30 am
IAH
-
STL
2 stops13h 06m
Frontier
Sun 8/236:33 pm
STL
-
IAH
1 stop12h 46m
Frontier
Deal found 6/11$301
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:48 pm
IAH
-
STL
1 stop5h 28m
American Airlines
Wed 8/51:25 pm
STL
-
IAH
1 stop10h 33m
American Airlines
Deal found 6/14$302

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 June 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$288
(CheapOair)

One-way from

$76
(Trip.com)

Popular in

April

Cheapest in

September

Average price

$437

Good round-trip deal

$425 or less

Good one-way deal

$241 or less
Provider with most accurate pricing for Houston George Bush Intcntl-Lambert-St Louis flight deals.
Search Deals
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
Search Deals
One-way flight from Houston George Bush Intcntl to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($171 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 15, 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

Tue 8/18

12:04 pm-2:15 pm

Nonstop2h 11m

Lambert-St Louis

Wed 8/19

11:15 am-1:32 pm

Nonstop2h 17m

$311
Quickest round-trip

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 6/27

8:00 am-10:07 am

Nonstop2h 07m

Lambert-St Louis

Sat 7/4

6:14 am-8:31 am

Nonstop2h 17m

$380

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 10/8

8:00 am-10:10 am

Nonstop2h 10m

Lambert-St Louis

Mon 10/12

5:36 pm-12:30 am

1 stop6h 54m

$391

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 8/6

3:31 pm-5:42 pm

Nonstop2h 11m

Lambert-St Louis

Mon 8/10

6:14 am-8:31 am

Nonstop2h 17m

$407

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 7/31

3:31 pm-5:42 pm

Nonstop2h 11m

Lambert-St Louis

Sun 8/2

6:14 am-8:31 am

Nonstop2h 17m

$415

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 7/15

8:30 pm-10:45 pm

Nonstop2h 15m

Lambert-St Louis

Tue 7/21

9:20 am-10:59 pm

1 stop13h 39m

$417

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 8/5

8:00 am-10:07 am

Nonstop2h 07m

Lambert-St Louis

Tue 8/11

12:59 pm-10:44 pm

1 stop9h 45m

$417

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 7/3

6:28 pm-8:40 pm

Nonstop2h 12m

Lambert-St Louis

Tue 7/7

6:14 am-8:31 am

Nonstop2h 17m

$437

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 7/10

6:30 am-12:42 pm

1 stop6h 12m

Lambert-St Louis

Wed 7/15

8:35 am-10:50 am

Nonstop2h 15m

$447

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 7/3

12:33 pm-8:43 pm

1 stop8h 10m

Lambert-St Louis

Wed 7/8

6:14 am-8:23 am

Nonstop2h 09m

$447

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 June.
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, September is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $281). 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 June 15, 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 45% 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 June 13, 2026.

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. 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?

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 June 15, 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
9,831 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,831 reviews
United Airlines
7.4
Good
9,831 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Frontier
5.6
Fair
2,884 reviews
United Airlines
7.4
Good
9,831 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 United Airlines fly from Houston George Bush Intcntl Airport to St. Louis in about 2h 11m. The time it takes to get you to your destination is usually consistent. There are 668 mi between Houston George Bush Intcntl Airport and St. Louis. Most flights are nonstop.

  • 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 ($227) offers the cheapest pricing from Houston George Bush Intcntl Airport to St. Louis. These flights start at 74% 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 ($118), and United Airlines ($149).

  • 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 Copa Airlines (90%), Mesa Airlines (90%) and ANA (90%).

  • 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 $149. On average you can expect to pay $381. The most popular route, (Houston George Bush Intcntl - Lambert-St Louis), can usually be booked for $260.

  • 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, September is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $281). 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
Alton
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.
Hobby to Kansas City flights
Hobby to St. Louis flights
George Bush Intcntl to Kansas City flights
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George Bush Intcntl to Springfield flights
Hobby to Columbia flights

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 June 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$111Average$220FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$227Average$501FlexibilityNo cancel feeOn-time69%

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