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George Bush Intcntl

$89+ Cheap flights from St. Louis (STL) to George Bush Intcntl (IAH)

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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IAH
Apr 1 — Apr 81
Tue 4/1
Tue 4/8
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Houston George Bush Intcntl are usually found in May or April, booked 46 days in advance, depart on a Friday or Tuesday and return on a Saturday

Cheap flight deals from St. Louis to George Bush Intcntl

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to George Bush Intcntl (IAH). 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 March 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$187
(United Airlines)

One-way from

$89
(United Airlines)

Popular in

January

Cheapest in

May

Average price

$353

Good round-trip deal

$465 or less

Good one-way deal

$244 or less
Provider with most accurate pricing for Lambert-St Louis-Houston George Bush Intcntl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Houston George Bush Intcntl flights.
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From Lambert-St Louis to Houston George Bush Intcntl
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One-way flight from Lambert-St Louis to Houston George Bush Intcntl
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Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Houston George Bush Intcntl.
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Price to beat on a one-way flight from Lambert-St Louis to Houston George Bush Intcntl.
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Find flight deals from St. Louis to George Bush Intcntl

Cheapest flights from St. Louis to George Bush Intcntl
Explore the most affordable flight options available from St. Louis to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2025.

This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:15 amSTL - IAH
Nonstop2h 17mUnited Airlines
Thu 5/16:37 amIAH - STL
1 stop5h 43mUnited Airlines
Deal found 3/26$187
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/227:10 amSTL - IAH
1 stop6h 36mDelta
Tue 4/297:05 amIAH - STL
1 stop4h 40mDelta
Deal found 3/26$197
This Mytrip deal was found by Cheapflights users on 3/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:10 pmSTL - IAH
2 stops24h 45mSpirit Airlines
Tue 4/295:30 amIAH - STL
1 stop11h 45mSpirit Airlines
Deal found 3/26$221
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Thu 4/247:04 amSTL - IAH
1 stop10h 32mAmerican Airlines
Thu 5/15:00 amIAH - STL
1 stop4h 01mAmerican Airlines
Deal found 3/26$230
This CheapOair deal was found by Cheapflights users on 3/26. 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.
Mon 4/76:38 pmSTL - IAH
1 stop16h 31mFrontier
Tue 4/156:00 amIAH - STL
1 stop27h 06mFrontier
Deal found 3/26$240
This Mytrip deal was found by Cheapflights users on 3/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:10 pmSTL - IAH
1 stop13h 46mMultiple Airlines
Sat 4/267:55 amIAH - STL
2 stops27h 50mMultiple Airlines
Deal found 3/26$269
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:36 pmSTL - IAH
1 stop28h 30mAlaska Airlines
Tue 9/25:55 pmIAH - STL
2 stops20h 22mAlaska Airlines
Deal found 3/26$615

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to George Bush Intcntl 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 March 27, 2025.
Use the filters below to find and compare flights from St. Louis to Houston George Bush Intcntl Airport that are best for you.

Fly from

St. Louis

Fly to

George Bush Intcntl

Route

Depart

Return

Price

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 4/24

6:15 am-8:32 am

Nonstop2h 17m

Houston George Bush Intcntl

Thu 5/1

6:37 am-12:20 pm

1 stop5h 43m

$187

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 4/22

7:10 am-1:46 pm

1 stop6h 36m

Houston George Bush Intcntl

Tue 4/29

7:05 am-11:45 am

1 stop4h 40m

$197

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 4/22

6:10 pm-6:55 pm

2 stops24h 45m

Houston George Bush Intcntl

Tue 4/29

5:30 am-5:15 pm

1 stop11h 45m

$221

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 4/24

7:04 am-5:36 pm

1 stop10h 32m

Houston George Bush Intcntl

Thu 5/1

5:00 am-9:01 am

1 stop4h 01m

$230

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 4/7

6:38 pm-11:09 am

1 stop16h 31m

Houston George Bush Intcntl

Tue 4/15

6:00 am-9:06 am

1 stop27h 06m

$240

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 4/22

6:10 pm-7:56 am

1 stop13h 46m

Houston George Bush Intcntl

Sat 4/26

7:55 am-11:45 am

2 stops27h 50m

$269

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sat 8/30

7:36 pm-12:06 am

1 stop28h 30m

Houston George Bush Intcntl

Tue 9/2

5:55 pm-2:17 pm

2 stops20h 22m

$615

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 4/15

4:20 pm-6:43 pm

Nonstop2h 23m

$89

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 4/29

6:10 pm-7:56 am

1 stop13h 46m

$96

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 4/16

12:51 pm-7:30 pm

1 stop6h 39m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 14 results
1
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Compare providers for flights from St. Louis to George Bush Intcntl

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 St. Louis to George Bush Intcntl in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
CheapOairPrice Accuracy1 starTrust 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 St. Louis-Houston George Bush Intcntl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Houston George Bush Intcntl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Houston George Bush Intcntl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Houston George Bush Intcntl Airport 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 St. Louis-Houston George Bush Intcntl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for St. Louis to Houston George Bush Intcntl Airport 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 St. Louis to Houston George Bush Intcntl Airport trip
Airports
STL

Expect security screening at STL to take 5-10 minutes during off-peak times. Check real-time wait times online before heading to the airport.

Read more about STLby Taryn White
IAH

For a quick trip to downtown Houston from IAH, Uber or Lyft takes around 25 minutes. Pickups are available at Terminals A, B, and C.

Read more about IAHby Evie Carrick
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

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

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from St. Louis 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 St. Louis to Houston George Bush Intcntl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to George Bush Intcntl. Price data was last updated on March 21, 2025.

The best time to book flights from St. Louis to Houston George Bush Intcntl Airport is 46 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Houston George Bush Intcntl Airport (average of $241). Flying from St. Louis to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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 STL to IAH?

Find hourly flight availability from St. Louis to George Bush Intcntl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 27, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 59% on flights from St. Louis to Houston George Bush Intcntl Airport by exploring options for tickets in the evening.

Rainfall in George Bush Intcntl by month

Plan your trip to George Bush Intcntl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Houston George Bush Intcntl Airport ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston George Bush Intcntl Airport when rainfall is around 3.2 in.

Temperature in George Bush Intcntl by month

Plan your trip to George Bush Intcntl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Houston George Bush Intcntl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing George Bush Intcntl

Get insights into the airlines that provide service to George Bush Intcntl. 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 George Bush Intcntl. Reviews last updated March 27, 2025.
See what other customers who have flown with Alaska Airlines, Delta and United Airlines from St. Louis to Houston have to say. 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.
Alaska Airlines
8.0
Very good
9,792 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,792 reviews
Alaska Airlines
8.0
Very good
9,792 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,895 reviews
Alaska Airlines
8.0
Very good
9,792 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,792 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,792 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Spirit Airlines
6.3
Okay
7,882 reviews
Alaska Airlines
8.0
Very good
9,792 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from St. Louis to George Bush Intcntl. 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 from for flights from St. Louis to Houston George Bush Intcntl?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Houston George Bush Intcntl. You should not have trouble finding flights to Houston George Bush Intcntl from Lambert-St Louis; the airport handles an average of 8 outbound flights to Houston George Bush Intcntl per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the St. Louis airport to Houston George Bush Intcntl. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

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

    Our cheapest airline available from St. Louis to Houston George Bush Intcntl Airport is United Airlines. Our recent data shows that you can find tickets from as low as $187 on this airline. Additional options worth looking into are Delta and Spirit Airlines, starting at $197 and $221 round-trip. United Airlines is priced at 50% lower than the current average price of a flight leaving 3 months from now.

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

    $89 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Spirit Airlines and Delta, with prices starting from $96 and $99, respectively.

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

    Before booking your flight to Houston George Bush Intcntl Airport from St. Louis, check out the most reliable airlines to get you to your destination on time: ANA (82%), United Airlines (81%), Copa Airlines( 79%).

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

    Looking for the cheapest flight from St. Louis to Houston George Bush Intcntl Airport? While on average our users pay $1,423, our data indicates the cheapest price to be $123. The most popular route (Lambert-St Louis - Houston George Bush Intcntl), is priced around $177.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to George Bush Intcntl 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 St. Louis to Houston George Bush Intcntl Airport?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Houston George Bush Intcntl Airport (average of $241). Flying from St. Louis to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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

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Top 3 airlines flying from St. Louis to George Bush Intcntl

Discover the top 3 airlines that operate flights from St. Louis to George Bush Intcntl. 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 March 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$107Average$159FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$196Average$360FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$221Average$416FlexibilityNo cancel feeOn-time69%
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