$348+ Cheap flights from Great Falls (GTF) to George Bush Intcntl (IAH)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — IAH
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Great Falls 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.Cheap flight deals from Great Falls to George Bush Intcntl
Cheapest
Best
Last-minute
Cheapest flights from Great Falls to George Bush IntcntlExplore the most affordable flight options available from Great Falls to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Great Falls to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Delta deal was found by Cheapflights users on 9/9. 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.
Wed 12/95:30 am -
1 stop7h 09m
Tue 12/157:20 am -
1 stop6h 15m
Deal found 9/9![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 9/9. 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.
Wed 12/95:30 am -
1 stop7h 09m
Mon 12/147:20 am -
1 stop6h 15m
Deal found 9/9![Delta logo]()
$378
This Delta deal was found by Cheapflights users on 9/9. 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.
Mon 11/26:27 pm -
2 stops14h 37m
Mon 11/235:10 am -
2 stops13h 29m
Deal found 9/9![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/232:25 pm -
1 stop7h 32m
Sun 9/276:20 am -
1 stop8h 21m
Deal found 9/7![United Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 9/7. 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.
Wed 9/235:40 am -
2 stops8h 28m
Sun 9/277:25 am -
1 stop6h 10m
Deal found 9/7![Delta logo]()
$444
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 11/22:45 pm -
1 stop5h 13m
Mon 11/238:30 am -
1 stop6h 19m
Deal found 9/9![United Airlines logo]()
$482
This Delta deal was found by Cheapflights users on 9/8. 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.
Sat 9/261:15 pm -
1 stop7h 42m
Wed 9/3011:26 am -
2 stops12h 11m
Deal found 9/8![Delta logo]()
$504
Best flights from Great Falls to George Bush IntcntlDiscover carefully curated flight deals from Great Falls to George Bush Intcntl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Great Falls to George Bush Intcntl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Delta deal was found by Cheapflights users on 9/9. 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.
Wed 12/95:30 am -
1 stop7h 09m
Tue 12/157:20 am -
1 stop6h 15m
Deal found 9/9![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/9. 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 1/126:15 am -
1 stop7h 43m
Sat 1/162:48 pm -
1 stop7h 32m
Deal found 9/9![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 9/9. 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 1/92:25 pm -
1 stop7h 20m
Wed 1/134:20 pm -
1 stop6h 00m
Deal found 9/9![United Airlines logo]()
$448
This Delta deal was found by Cheapflights users on 9/8. 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.
Sat 9/261:15 pm -
1 stop7h 42m
Wed 9/3011:26 am -
2 stops12h 11m
Deal found 9/8![Delta logo]()
$504
This Delta deal was found by Cheapflights users on 9/9. 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.
Mon 11/26:27 pm -
2 stops14h 37m
Mon 11/237:20 am -
1 stop6h 21m
Deal found 9/9![Delta logo]()
$514
Last-minute flights from Great Falls to George Bush IntcntlDiscover last-minute flight deals from Great Falls to George Bush Intcntl. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Great Falls to George Bush Intcntl. Data last updated September 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/8. 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.
Wed 9/91:15 pm -
1 stop7h 42m
Sat 9/127:25 am -
1 stop6h 10m
Deal found 9/8![Delta logo]()
$848
This Delta deal was found by Cheapflights users on 9/8. 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 9/101:15 pm -
1 stop7h 42m
Sat 9/127:25 am -
1 stop6h 10m
Deal found 9/8![Delta logo]()
$598
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/106:15 am -
1 stop8h 00m
Mon 10/126:20 am -
1 stop8h 21m
Deal found 9/8![United Airlines logo]()
$698
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/232:25 pm -
1 stop7h 32m
Sun 9/276:20 am -
1 stop8h 21m
Deal found 9/7![United Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 9/7. 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.
Wed 9/235:40 am -
2 stops8h 28m
Sun 9/277:25 am -
1 stop6h 10m
Deal found 9/7![Delta logo]()
$444
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/252:37 pm -
1 stop5h 18m
Fri 10/96:20 am -
1 stop8h 21m
Deal found 9/8![United Airlines logo]()
$614
This Delta deal was found by Cheapflights users on 9/8. 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.
Sat 9/261:15 pm -
1 stop7h 42m
Wed 9/3011:26 am -
2 stops12h 11m
Deal found 9/8![Delta logo]()
$504
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/262:37 pm -
1 stop8h 22m
Wed 9/306:20 am -
1 stop8h 21m
Deal found 9/8![United Airlines logo]()
$583
Find flight deals from Great Falls to George Bush Intcntl
Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) 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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (Delta) |
Popular in | July |
Cheapest in | October |
Average price | $465 |
Cheapflights Fare Finder
Customize your flight search to find flights from Great Falls 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 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Great Falls to Houston George Bush Intcntl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Great FallsHouston
GTF Great Falls - IAH Houston George Bush Intcntl
GTFIAH
Great Falls
Wed 12/9
5:30 am-1:39 pm
1 stop7h 09m
Houston George Bush Intcntl
Tue 12/15
7:20 am-12:35 pm
1 stop6h 15m
$348
Great FallsHouston
GTF Great Falls - IAH Houston George Bush Intcntl
GTFIAH
Great Falls
Tue 1/12
6:15 am-2:58 pm
1 stop7h 43m
Houston George Bush Intcntl
Sat 1/16
2:48 pm-9:20 pm
1 stop7h 32m
$448
Quickest round-trip
Great FallsHouston
GTF Great Falls - IAH Houston George Bush Intcntl
GTFIAH
Great Falls
Sat 1/9
2:25 pm-10:45 pm
1 stop7h 20m
Houston George Bush Intcntl
Wed 1/13
4:20 pm-9:20 pm
1 stop6h 00m
$448
Great FallsHouston
GTF Great Falls - IAH Houston George Bush Intcntl
GTFIAH
Great Falls
Sat 9/26
1:15 pm-9:57 pm
1 stop7h 42m
Houston George Bush Intcntl
Wed 9/30
11:26 am-10:37 pm
2 stops12h 11m
$504
Great FallsHouston
GTF Great Falls - IAH Houston George Bush Intcntl
GTFIAH
Great Falls
Mon 11/2
6:27 pm-10:04 am
2 stops14h 37m
Houston George Bush Intcntl
Mon 11/23
7:20 am-12:41 pm
1 stop6h 21m
$514
Sorted by cheapest first
Compare providers for flights from Great Falls 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 Great Falls to George Bush Intcntl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Great Falls-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 Great Falls-Houston George Bush Intcntl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-Houston George Bush Intcntl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Great Falls-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 Great Falls-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 Great Falls to George Bush Intcntl
Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from Great Falls with our price prediction graph.
GTF-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 Great Falls to Houston George Bush Intcntl Airport
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 September 10, 2026.
Read through reviews of airlines operating flights from Great Falls to Houston George Bush Intcntl Airport, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Entertainment
7.1
Overall
7.4
Boarding
7.7
Food
6.6
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentFERNANDO,Sep 2024
YYC - IAH
Crew
8.1
Entertainment
7.1
Overall
7.4
Boarding
7.7
Food
6.6
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentFERNANDO,Sep 2024
YYC - IAH
Related info for your journey
Find useful and relevant information for your journey from Great Falls 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
Humble
Jersey Village
Tomball
Cypress
Montgomery
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Great Falls and George Bush Intcntl flights
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Other flights from Great Falls
Browse through other flights departing from Great Falls. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Great Falls to George Bush Intcntl
Discover the top airline that operate flights from Great Falls 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$382 | Average$621 | FlexibilityNo cancel fee | On-time69% |