$65+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IAH
Sep 5 — Sep 121
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to George Bush Intcntl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lambert-St Louis to Houston George Bush Intcntl are usually found in January or August, booked 27 days in advance, depart on a Friday or Tuesday and return on a Wednesday
Cheap flight deals from St. Louis to George Bush Intcntl
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to George Bush IntcntlExplore 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 August 6, 2026.
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 August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/1910:35 am -
1 stop28h 30m
Wed 10/288:44 pm -
1 stop12h 56m
Deal found 8/4![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/1910:35 am -
1 stop28h 30m
Sat 10/248:44 pm -
1 stop12h 56m
Deal found 8/4![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 10/2210:35 am -
1 stop26h 05m
Wed 10/288:44 pm -
1 stop12h 56m
Deal found 8/5![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 10/1910:35 am -
1 stop26h 05m
Sun 10/257:00 am -
1 stop26h 40m
Deal found 8/5![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/142:29 pm -
1 stop16h 48m
Wed 9/166:28 am -
1 stop6h 42m
Deal found 8/1![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/1910:35 am -
1 stop28h 30m
Tue 10/278:44 pm -
1 stop12h 56m
Deal found 8/4![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/1910:35 am -
1 stop28h 30m
Thu 10/297:00 am -
1 stop26h 40m
Deal found 8/4![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/46:17 pm -
1 stop13h 03m
Fri 9/116:08 am -
1 stop7h 02m
Deal found 8/2![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/112:29 pm -
1 stop16h 48m
Sun 9/139:04 pm -
1 stop16h 06m
Deal found 8/4![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/2010:35 am -
1 stop11h 31m
Wed 10/288:44 pm -
1 stop12h 56m
Deal found 8/4![Frontier logo]()
$148
Best flights from St. Louis to George Bush IntcntlDiscover carefully curated flight deals from St. Louis to George Bush Intcntl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
Discover carefully curated flight deals from St. Louis to George Bush Intcntl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
This Delta deal was found by Cheapflights users on 8/2. 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.
Thu 9/311:00 am -
1 stop4h 42m
Sun 9/67:00 am -
1 stop4h 56m
Deal found 8/2![Delta logo]()
$256
This United Airlines deal was found by Cheapflights users on 8/2. 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.
Tue 8/2511:15 am -
Nonstop2h 17m
Tue 9/18:15 pm -
Nonstop2h 12m
Deal found 8/2![United Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Sat 10/243:12 pm -
Nonstop2h 13m
Mon 10/268:20 pm -
Nonstop2h 06m
Deal found 8/5![United Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 10/176:15 am -
Nonstop2h 12m
Wed 10/218:00 am -
Nonstop2h 10m
Deal found 8/1![United Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 8/2. 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 8/2711:15 am -
Nonstop2h 17m
Sun 8/308:00 am -
Nonstop2h 10m
Deal found 8/2![United Airlines logo]()
$376
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Wed 10/2111:10 am -
Nonstop2h 15m
Fri 10/2311:58 am -
Nonstop2h 12m
Deal found 8/5![United Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 11/38:30 am -
Nonstop2h 31m
Fri 11/62:40 pm -
Nonstop2h 06m
Deal found 8/5![United Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Fri 10/163:12 pm -
Nonstop2h 13m
Sun 10/1811:58 am -
Nonstop2h 12m
Deal found 8/5![United Airlines logo]()
$383
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Fri 10/26:15 am -
Nonstop2h 12m
Sun 10/411:58 am -
Nonstop2h 12m
Deal found 8/3![United Airlines logo]()
$387
Last-minute flights from St. Louis to George Bush IntcntlDiscover last-minute flight deals from St. Louis to George Bush Intcntl. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to George Bush Intcntl. Data last updated August 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/246:17 pm -
1 stop13h 03m
Thu 8/2711:32 am -
1 stop5h 50m
Deal found 8/2![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/276:17 pm -
1 stop15h 46m
Sun 8/304:32 pm -
1 stop24h 50m
Deal found 8/1![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/286:17 pm -
1 stop13h 03m
Mon 8/3111:32 am -
1 stop5h 50m
Deal found 8/2![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/36:17 pm -
1 stop15h 46m
Sun 9/66:00 am -
1 stop11h 22m
Deal found 8/2![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/36:17 pm -
1 stop27h 57m
Thu 9/109:04 pm -
1 stop16h 06m
Deal found 8/4![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/46:17 pm -
1 stop13h 03m
Fri 9/116:08 am -
1 stop7h 02m
Deal found 8/2![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/92:29 pm -
1 stop8h 01m
Wed 9/166:28 am -
1 stop6h 42m
Deal found 8/2![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/112:29 pm -
1 stop16h 48m
Sun 9/139:04 pm -
1 stop16h 06m
Deal found 8/4![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/142:29 pm -
1 stop16h 48m
Wed 9/166:28 am -
1 stop6h 42m
Deal found 8/1![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/162:29 pm -
1 stop8h 01m
Wed 9/236:28 am -
1 stop6h 42m
Deal found 8/1![Frontier logo]()
$156
One-way flights from St. Louis to George Bush IntcntlSearch for one-way flight options from St. Louis to George Bush Intcntl. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
Search for one-way flight options from St. Louis to George Bush Intcntl. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/142:29 pm -
1 stop16h 48m
Deal found 8/4![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/316:17 pm -
1 stop13h 03m
Deal found 8/2![Frontier logo]()
$68
This Trip.com deal was found by Cheapflights users on 8/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:17 pm -
1 stop27h 57m
Deal found 8/3![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 10/3010:35 am -
1 stop26h 05m
Deal found 8/1![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 10/2910:35 am -
1 stop20h 59m
Deal found 8/1![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/36:17 pm -
1 stop15h 46m
Deal found 8/2![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 8/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:35 am -
1 stop11h 31m
Deal found 8/3![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 8/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:29 pm -
1 stop8h 01m
Deal found 8/2![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/302:29 pm -
1 stop8h 01m
Deal found 8/2![Frontier logo]()
$84
Find 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 August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $128 (Kiwi.com) |
One-way from | $65 (Kiwi.com) |
Popular in | February |
Cheapest in | January |
Average price | $301 |
Good round-trip deal | $531 or less |
Good one-way deal | $247 or less |
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 August 6, 2026.
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
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Thu 9/3
11:00 am-3:42 pm
1 stop4h 42m
Houston George Bush Intcntl
Sun 9/6
7:00 am-11:56 am
1 stop4h 56m
$256
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Tue 8/25
11:15 am-1:32 pm
Nonstop2h 17m
Houston George Bush Intcntl
Tue 9/1
8:15 pm-10:27 pm
Nonstop2h 12m
$335
Quickest round-trip
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Sat 10/24
3:12 pm-5:25 pm
Nonstop2h 13m
Houston George Bush Intcntl
Mon 10/26
8:20 pm-10:26 pm
Nonstop2h 06m
$335
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Sat 10/17
6:15 am-8:27 am
Nonstop2h 12m
Houston George Bush Intcntl
Wed 10/21
8:00 am-10:10 am
Nonstop2h 10m
$335
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Thu 8/27
11:15 am-1:32 pm
Nonstop2h 17m
Houston George Bush Intcntl
Sun 8/30
8:00 am-10:10 am
Nonstop2h 10m
$376
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Wed 10/21
11:10 am-1:25 pm
Nonstop2h 15m
Houston George Bush Intcntl
Fri 10/23
11:58 am-2:10 pm
Nonstop2h 12m
$378
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Tue 11/3
8:30 am-11:01 am
Nonstop2h 31m
Houston George Bush Intcntl
Fri 11/6
2:40 pm-4:46 pm
Nonstop2h 06m
$378
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Fri 10/16
3:12 pm-5:25 pm
Nonstop2h 13m
Houston George Bush Intcntl
Sun 10/18
11:58 am-2:10 pm
Nonstop2h 12m
$383
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Fri 10/2
6:15 am-8:27 am
Nonstop2h 12m
Houston George Bush Intcntl
Sun 10/4
11:58 am-2:10 pm
Nonstop2h 12m
$387
Cheapest one-way
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Sun 9/6
8:35 am-10:52 am
Nonstop2h 17m
$109
Showing 1-10 of 19 resultsSorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
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.
STL-IAH
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
Prices
More
How far ahead should I book a flight from St. Louis to Houston George Bush Intcntl Airport?
The best time to book flights from St. Louis to Houston George Bush Intcntl Airport is 26 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, January is the cheapest month in which you can book a flight from St. Louis to Houston George Bush Intcntl Airport (average of $243). Flying from St. Louis to Houston George Bush Intcntl Airport in February is currently the most expensive (average of $488). 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 August 6, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Houston George Bush Intcntl Airport as you normally would.
What’s the top layover airport for flights from St. Louis to Houston George Bush Intcntl Airport?
Share of 1-stop round-trip flights from St. Louis to Houston George Bush Intcntl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Orlando (MCO) – chosen by Cheapflights users on 50% of 1-stop itineraries from St. Louis to Houston George Bush Intcntl Airport on Cheapflights.
What’s the cheapest layover airport for flights from St. Louis to Houston George Bush Intcntl Airport?
Average round-trip fare for 1-stop flights from St. Louis to Houston George Bush Intcntl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $158.
What’s the fastest layover option from St. Louis to Houston George Bush Intcntl Airport?
Shortest average travel time for 1-stop one-way flights from St. Louis to Houston George Bush Intcntl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 14h 52m.
Which airport typically offers the quickest layover for flights from St. Louis to Houston George Bush Intcntl Airport?
Average layover duration for 1-stop one-way flights from St. Louis to Houston George Bush Intcntl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 8h 43m.
The best insider tips for St. Louis to Houston George Bush Intcntl Airport flights
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Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Houston George Bush Intcntl Airport trip
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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 August 6, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andFrontier from St. Louis to Houston George Bush Intcntl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Crew
8.1
Food
6.7
Reviews
1 / 20
8.0
ExcellentFERNANDO,Sep 2024
YYC - IAH
Overall
7.4
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Crew
8.1
Food
6.7
Reviews
1 / 20
8.0
ExcellentFERNANDO,Sep 2024
YYC - IAH
Overall
7.4
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Crew
8.1
Food
6.7
Reviews
1 / 20
8.0
ExcellentFERNANDO,Sep 2024
YYC - IAH
Overall
7.4
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Crew
8.1
Food
6.7
Reviews
1 / 20
8.0
ExcellentFERNANDO,Sep 2024
YYC - IAH
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.
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 locationsKaty
Conroe
The Woodlands
Spring
Jersey Village
Humble
Tomball
Cypress
Montgomery
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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 August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$153 | Average$228 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$167 | Average$456 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$234 | Average$417 | FlexibilityNo cancel fee | On-time69% |