$411 Cheap United flights from Houston to Great Falls (IAH to GTF)

Find The Best Day To Fly from Houston to Great Falls

Amazing United IAH to GTF Flight Deals

The cheapest flights to Great Falls Intl. found within the past 7 days were $507 round trip and $411 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Jun 26 - Sat, Jul 3

IAH

Houston

GTF

Great Falls

$507

Roundtrip

found 4 days ago

Sat, Jun 26 - Sat, Jul 3

IAH

Houston

GTF

Great Falls

$545

Roundtrip

found 4 days ago

Sat, Jun 26 - Sat, Jul 3

IAH

Houston

GTF

Great Falls

$583

Roundtrip

found 4 days ago

Sat, Jun 26 - Sat, Jul 3

IAH

Houston

GTF

Great Falls

$596

Roundtrip

found 4 days ago

Sat, Jun 26 - Sat, Jul 3

IAH

Houston

GTF

Great Falls

$621

Roundtrip

found 4 days ago

Sat, Jun 26 - Sat, Jul 3

IAH

Houston

GTF

Great Falls

$627

Roundtrip

found 4 days ago

Sat, Jun 26 - Sat, Jul 3

IAH

Houston

GTF

Great Falls

$672

Roundtrip

found 4 days ago

Sun, Dec 6 - Tue, Dec 8

IAH

Houston

GTF

Great Falls

$681

Roundtrip

found 2 days ago

Frequently asked questions

Can I catch a flight from IAH to GTF right now?

It's prudent to learn about any travel advice reports and quarantine requirements in place in your destination. Ensure you check out the Covid-19 Travel Advisor for up-to-date information on flying to GTF.

What terminal is United Airlines at Houston Airport?

You should find out exactly which terminal United Airlines operates from at George Bush Intercontinental Airport (IAH) once you receive your ticket. The same can be said for information regarding your arrival at GTF. If those details are missing, consult your airline.

Are there United Airlines non-stop flights from IAH to GTF?

There aren't any nonstop flights with United Airlines from IAH to GTF. You will have at least one stopover, so take the opportunity to go for a stroll and stretch out those legs before jumping on your connecting flight.

How long is a United Airlines flight from IAH to GTF?

Your United Airlines flight from IAH to GTF should take roughly 4 hours and 48 minutes. But there are tons of things you can do to entertain yourself. Talking to the person beside you about their awesome travel experiences is one of them. If you'd prefer a different sort of in-flight entertainment, you could always listen to a podcast.

How many direct and indirect flights does United Airlines fly from IAH to GTF?

There are around 2 flights every day with United Airlines from Houston Airport to Great Falls Intl. Airport (GTF).

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to Great Falls Intl. Airport (GTF), please visit our Customer Service Portal.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

What are the cheapest days to fly?

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

How far in advance can you book a flight?

Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Houston IAH to Great Falls GTF

To find the best deals on flights to Houston from Great Falls with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.

Return flights from Houston IAH to Great Falls GTF with United

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $507 to $681, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply.

Book one-way United flights from Houston IAH to Great Falls GTF

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Houston to Great Falls costs from $411. Prices and availability subject to change. Additional terms may apply.

The easy way to find cheap flights to Great Falls GTF from Houston IAH with United

To find a cheap United flight from Houston IAH to Great Falls GTF, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference.

How to find our best airfare deals on United flights from Houston IAH to Great Falls GTF

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as June, or if you book a flight with a stopover.

Find nonstop flights from Houston IAH to Great Falls GTF with United

If you’re keen to be on Great Falls soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it.

Flexible airline tickets for United flights from Houston IAH to Great Falls GTF

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.

There are a lot of reasons to book your flights to Great Falls GTF from Houston IAH with United on Travelocity

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Airport code	Country	Airport name	Number of flights
ORD	USA	O'Hare Intl.	227
DEN	USA	Denver Intl.	226
IAH	USA	George Bush Intercontinental	136
IAD	USA	Washington Dulles Intl.	100
SFO	USA	San Francisco Intl.	64
LAX	USA	Los Angeles Intl.	23
EWR	USA	Liberty Intl.	20
FRA	DEU	Frankfurt Intl.	19
NRT	JPN	Narita Intl.	19
PEK	CHN	Capital Intl.	16

Travelers ❤️ these 🏨 after their flight to Great Falls

Heritage Inn

1700 Fox Farm Road Great Falls MT

This smoke-free hotel features a casino, a nightclub, and a restaurant. Enjoy the indoor pool and free perks like continental breakfast and free self parking. ...

7.8/10 Good! (3,282 reviews)

"Hotel could use some updates…but check in was fast. Some other kids seemed to enjoy pool. And Room was clean and big."

Reviewed on Nov 12, 2026

Holiday Inn Express Hotel & Suites Great Falls by IHG

1625 Market Place Dr Great Falls MT

This hotel features an indoor pool and a 24-hour gym. Traveling on business? Take advantage of the business center and free WiFi in public areas. Enjoy the hot ...

7.8/10 Good! (627 reviews)

"The breakfast that is offered has gone way down hill compared to years ago. The food is mediocre at best. There were no hard boiled eggs, the fruit looked ok, but not great. Half the time they were either not restocking the food or were out. I would say the idea that you get a breakfast with your ..."

Reviewed on Nov 8, 2026

Crystal Inn Hotel & Suites Great Falls

3701 31st St SW Great Falls MT

This hotel features an indoor pool and a gym. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public areas, and free airport ...

Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

More Ways To Wander

Flights to Great Falls

Great Falls Hotels

Great Falls Vacation Rentals

Great Falls Car Rentals

Great Falls Vacations

Explore More Ways to Travel with Travelocity

Flights

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.