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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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — STL
jun. 21 — jun. 281
sáb. 6/21
sáb. 6/28
1 adult, Economy
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Cheapflights Tip: The best prices from Houston George Bush Intcntl to Lambert-St Louis are usually found in August or July, booked 65 days in advance, depart on a Saturday or Friday and return on a Tuesday

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 junio 16, 2025.

Round-trip from

$169
(FlightHub)

One-way from

$55
(FlightHub)

Popular in

February

Cheapest in

August

Average price

$346

Good round-trip deal

$323 or less

Good one-way deal

$222 or less
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 ($9 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 16, 2025.

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/108:46 pmIAH - STL
1 stop11h 03mSpirit Airlines
dom. 9/148:44 amSTL - IAH
1 stop9h 06mSpirit Airlines
Deal found 6/14$169
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/2610:04 pmIAH - STL
1 stop11h 08mFrontier
dom. 6/292:36 pmSTL - IAH
1 stop8h 24mFrontier
Deal found 6/15$190
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/124:40 pmIAH - STL
Nonstop2h 13mUnited Airlines
lun. 8/186:15 pmSTL - IAH
Nonstop2h 25mUnited Airlines
Deal found 6/15$197
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/148:56 pmIAH - STL
1 stop26h 51mMultiple Airlines
lun. 7/2110:47 amSTL - IAH
1 stop23h 58mMultiple Airlines
Deal found 6/14$202
This Delta deal was found by Cheapflights users on 6/16. 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.
lun. 9/85:41 pmIAH - STL
1 stop5h 42mDelta
jue. 9/117:20 amSTL - IAH
1 stop4h 59mDelta
Deal found 6/16$217

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 junio 16, 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

mié. 9/10

8:46 pm-7:49 am

1 stop11h 03m

Lambert-St Louis

dom. 9/14

8:44 am-5:50 pm

1 stop9h 06m

$169

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 6/26

10:04 pm-9:12 am

1 stop11h 08m

Lambert-St Louis

dom. 6/29

2:36 pm-11:00 pm

1 stop8h 24m

$190

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

mar. 8/12

4:40 pm-6:53 pm

Nonstop2h 13m

Lambert-St Louis

lun. 8/18

6:15 pm-8:40 pm

Nonstop2h 25m

$197

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

lun. 7/14

8:56 pm-11:47 pm

1 stop26h 51m

Lambert-St Louis

lun. 7/21

10:47 am-10:45 am

1 stop23h 58m

$202

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

lun. 9/8

5:41 pm-11:23 pm

1 stop5h 42m

Lambert-St Louis

mié. 9/17

11:51 am-4:34 pm

1 stop4h 43m

$217

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 9/11

5:00 am-11:56 am

1 stop6h 56m

Lambert-St Louis

jue. 9/11

4:36 pm-11:19 pm

1 stop6h 43m

$336

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

sáb. 9/6

8:46 pm-7:49 am

1 stop11h 03m

$55

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

sáb. 6/21

6:00 am-2:07 pm

1 stop8h 07m

$90

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

mar. 8/12

4:40 pm-6:53 pm

Nonstop2h 13m

$99

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

mar. 10/14

10:11 am-5:20 pm

1 stop7h 09m

$108

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 13 results
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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

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 June 13, 2025.

Booking 65 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, August is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $311). Flying from Houston George Bush Intcntl Airport to St. Louis in March is currently the most expensive (average of $356). 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 junio 16, 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 at noon, which can drop the price by up to 12% 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 June 15, 2025.

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

Weekly flight availability from Houston George Bush Intcntl Airport to St. Louis

Explore weekly flight availability from George Bush Intcntl to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated junio 16, 2025.

The most flights from IAH to STL are scheduled on a Monday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 junio 16, 2025.
Read through reviews of airlines operating flights from Houston to St. Louis, such as Alaska Airlines, Delta and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,801 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Spirit Airlines
6.3
Okay
8,061 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    According to our current data, Spirit Airlines ($169), Frontier ($190), and United Airlines ($197) offers the cheapest pricing from Houston George Bush Intcntl Airport to St. Louis. These flights start at 55% 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 Spirit Airlines ($55), Frontier ($90), and United Airlines ($99).

  • 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 (88%), ANA (81%) and SkyWest Airlines (76%).

  • 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 $80. On average you can expect to pay $323. The most popular route, (Houston George Bush Intcntl - Lambert-St Louis), can usually be booked for $169.

  • 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, August is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $311). Flying from Houston George Bush Intcntl Airport to St. Louis in March is currently the most expensive (average of $356). 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 Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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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 junio 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$109Average$196FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$180Average$306FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$240Average$389FlexibilityNo cancel feeOn-time69%

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