$171 Cheap Flights from Houston (IAH) to Great Falls (GTF)

View $171 flight on Sat, Feb 28, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Great Falls, MT (GTF-Great Falls Intl.)

Cheap Flights from Houston to Great Falls (IAH-GTF)

Prices were available within the past 7 days and start at $171 for one-way flights and $342 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Jan 10 - Tue, Jan 27
IAH
Houston
GTF
Great Falls
$342 Roundtrip, found 8 hours ago
$342
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Jan 10 from Houston to Great Falls, returning Tue, Jan 27, priced at $342 found 8 hours ago
Delta
Tue, Jan 6 - Sat, Jan 17
IAH
Houston
GTF
Great Falls
$348 Roundtrip, found 8 hours ago
$348
Roundtrip
found 8 hours ago
Select Delta flight, departing Tue, Jan 6 from Houston to Great Falls, returning Sat, Jan 17, priced at $348 found 8 hours ago
Alaska Airlines
Tue, Feb 24 - Sat, Mar 7
IAH
Houston
GTF
Great Falls
$348 Roundtrip, found 8 hours ago
$348
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Tue, Feb 24 from Houston to Great Falls, returning Sat, Mar 7, priced at $348 found 8 hours ago
Hawaiian Airlines
Thu, Feb 5 - Sat, Feb 21
IAH
Houston
GTF
Great Falls
$357 Roundtrip, found 8 hours ago
$357
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from Houston to Great Falls, returning Sat, Feb 21, priced at $357 found 8 hours ago
Hawaiian Airlines
Sat, Feb 14 - Mon, Mar 2
IAH
Houston
GTF
Great Falls
$360 Roundtrip, found 8 hours ago
$360
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Sat, Feb 14 from Houston to Great Falls, returning Mon, Mar 2, priced at $360 found 8 hours ago
Hawaiian Airlines
Sun, Feb 8 - Sat, Feb 21
IAH
Houston
GTF
Great Falls
$367 Roundtrip, found 8 hours ago
$367
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Sun, Feb 8 from Houston to Great Falls, returning Sat, Feb 21, priced at $367 found 8 hours ago
Alaska Airlines
Sat, Feb 28 - Mon, Mar 16
IAH
Houston
GTF
Great Falls
$370 Roundtrip, found 8 hours ago
$370
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Sat, Feb 28 from Houston to Great Falls, returning Mon, Mar 16, priced at $370 found 8 hours ago
Hawaiian Airlines
Thu, Jan 8 - Mon, Jan 26
IAH
Houston
GTF
Great Falls
$372 Roundtrip, found 8 hours ago
$372
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Thu, Jan 8 from Houston to Great Falls, returning Mon, Jan 26, priced at $372 found 8 hours ago
Alaska Airlines
Tue, Mar 3 - Mon, Mar 16
IAH
Houston
GTF
Great Falls
$373 Roundtrip, found 8 hours ago
$373
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Tue, Mar 3 from Houston to Great Falls, returning Mon, Mar 16, priced at $373 found 8 hours ago
United
Tue, Nov 18 - Wed, Nov 19
IAH
Houston
GTF
Great Falls
$389 Roundtrip, found 10 hours ago
$389
Roundtrip
found 10 hours ago
Select United flight, departing Tue, Nov 18 from Houston to Great Falls, returning Wed, Nov 19, priced at $389 found 10 hours ago

Find the cheapest month to fly from Houston (IAH) to Great Falls (GTF)

January is typically the cheapest month to fly

From $294 - $752 per traveler.

Alternative airports near Great Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Great Falls Intl. GTF. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $440
GTF
Great Falls Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $440
Flights from Houston (IAH) to Great Falls (GTF)
Origin airport
George Bush Intercontinental
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$342
Distance
1478 mi

Houston to Great Falls Flights

The cheapest times to fly from Houston to Great Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Great Falls are during the month of January. You can find some of the cheapest flights from Houston to Great Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Great Falls

Sunday is one of the best days to book for cheap flights from Houston to Great Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to Great Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Great Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $171 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Great Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Great Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF) cost?
Snag a cheap one-way flight from $171 or cheap return flight from $342 from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF)?
Planning your trip for January is a great way to save, as it's the cheapest month for flights between IAH and GTF. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest IAH to GTF flight.
How many flights per day from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF)?
Nonstop flights from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAH to GTF?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF)?
Book a flight from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF) last-minute?
Booking your plane ticket from IAH to GTF just before your getaway is usually more expensive. But if there's some wiggle room with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book an IAH to GTF flight and hotel package?
Booking an IAH to GTF flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of stays and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Great Falls Intl. Airport (GTF)?
Generally, it's possible to cancel or reschedule your IAH to GTF flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.