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Cheap flights from Great Falls to Houston from $519

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Houston departing on 9/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Great Falls to Houston (GTF-IAH)

Cheap round-trip flights

Alaska Airlines Logo
4:29 pm - 6:24 amGTF-IAH
12h 55m1 stop
Alaska Airlines Logo
7:28 pm - 3:49 pmIAH-GTF
21h 21m1 stop
$519Alaska Airlines
Find Deal
Sun, Sep 21 - Sun, Sep 28
United Airlines Logo
2:35 pm - 1:40 pmGTF-IAH
22h 05m2 stops
United Airlines Logo
7:35 am - 9:28 pmIAH-GTF
14h 53m2 stops
$536United Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 17
United Airlines Logo
2:35 pm - 8:49 amGTF-IAH
17h 14m2 stops
United Airlines Logo
2:51 pm - 9:28 pmIAH-GTF
7h 37m1 stop
$544United Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 17
United Airlines Logo
7:00 am - 11:10 pmGTF-IAH
15h 10m1 stop
United Airlines Logo
9:57 pm - 1:37 pmIAH-GTF
16h 40m1 stop
$550United Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 17
Alaska Airlines Logo
4:29 pm - 6:24 amGTF-IAH
12h 55m1 stop
Alaska Airlines Logo
5:59 pm - 3:49 pmIAH-GTF
22h 50m2 stops
$569Alaska Airlines
Find Deal
Sun, Sep 21 - Sun, Sep 28
Delta Logo
1:10 pm - 9:35 pmGTF-IAH
7h 25m1 stop
Delta Logo
7:45 am - 12:32 pmIAH-GTF
5h 47m1 stop
$608Delta
Find Deal
Sat, Jan 3 - Tue, Jan 6
Delta Logo
1:10 pm - 9:35 pmGTF-IAH
7h 25m1 stop
Delta Logo
6:30 am - 5:44 pmIAH-GTF
12h 14m2 stops
$627Delta
Find Deal
Sat, Jan 3 - Tue, Jan 6
Alaska Airlines Logo
4:29 pm - 4:59 pmGTF-IAH
23h 30m2 stops
Alaska Airlines Logo
5:59 pm - 3:49 pmIAH-GTF
22h 50m2 stops
$665Alaska Airlines
Find Deal
Sun, Sep 21 - Sun, Sep 28
Alaska Airlines Logo
7:21 pm - 4:57 pmGTF-IAH
20h 36m2 stops
Alaska Airlines Logo
5:57 pm - 3:20 pmIAH-GTF
22h 23m2 stops
$734Alaska Airlines
Find Deal
Sat, Jan 3 - Tue, Jan 6

Delta flights from Great Falls to Houston George Bush Intcntl Airport

Our best Delta deals on Great Falls to Houston George Bush Intcntl Airport flight tickets
Delta
Jan 3
GTF1:10 pmGreat Falls
7h 25m
1 stop
IAH9:35 pmHouston George Bush Intcntl
Jan 6
IAH7:45 amHouston George Bush Intcntl
5h 47m
1 stop
GTF12:32 pmGreat Falls
$608
Find similar
Delta
Aug 23
GTF5:45 amGreat Falls
5h 11m
1 stop
IAH11:56 amHouston George Bush Intcntl
Aug 26
IAH2:20 pmHouston George Bush Intcntl
7h 14m
1 stop
GTF8:34 pmGreat Falls
$611
Find similar
Delta
Aug 23
GTF5:45 amGreat Falls
5h 11m
1 stop
IAH11:56 amHouston George Bush Intcntl
Aug 26
IAH7:00 amHouston George Bush Intcntl
11h 26m
2 stops
GTF5:26 pmGreat Falls
$621
Find similar

Alaska Airlines flights from Great Falls to Houston George Bush Intcntl Airport

Our best Alaska Airlines deals on Great Falls to Houston George Bush Intcntl Airport flight tickets
Alaska Airlines
Sep 21
GTF4:29 pmGreat Falls
12h 55m
1 stop
IAH6:24 amHouston George Bush Intcntl
Sep 28
IAH7:28 pmHouston George Bush Intcntl
21h 21m
1 stop
GTF3:49 pmGreat Falls
$519
Find similar
Alaska Airlines
Sep 21
GTF4:29 pmGreat Falls
12h 55m
1 stop
IAH6:24 amHouston George Bush Intcntl
Sep 28
IAH5:59 pmHouston George Bush Intcntl
22h 50m
2 stops
GTF3:49 pmGreat Falls
$569
Find similar
Alaska Airlines
Sep 21
GTF4:29 pmGreat Falls
23h 30m
2 stops
IAH4:59 pmHouston George Bush Intcntl
Sep 28
IAH5:59 pmHouston George Bush Intcntl
22h 50m
2 stops
GTF3:49 pmGreat Falls
$665
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to Houston George Bush Intcntl Airport 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, momondo users made 832,500 searches. Data last updated August 20, 2025.
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

Price

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Sun 9/21

4:29 pm-6:24 am

1 stop12h 55m

Houston George Bush Intcntl

Sun 9/28

7:28 pm-3:49 pm

1 stop21h 21m

$519

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Wed 9/3

2:35 pm-1:40 pm

2 stops22h 05m

Houston George Bush Intcntl

Wed 9/17

7:35 am-9:28 pm

2 stops14h 53m

$536

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Wed 9/3

2:35 pm-8:49 am

2 stops17h 14m

Houston George Bush Intcntl

Wed 9/17

2:51 pm-9:28 pm

1 stop7h 37m

$544

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Wed 9/3

7:00 am-11:10 pm

1 stop15h 10m

Houston George Bush Intcntl

Wed 9/17

9:57 pm-1:37 pm

1 stop16h 40m

$550

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Sun 9/21

4:29 pm-6:24 am

1 stop12h 55m

Houston George Bush Intcntl

Sun 9/28

5:59 pm-3:49 pm

2 stops22h 50m

$569

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Sat 1/3

1:10 pm-9:35 pm

1 stop7h 25m

Houston George Bush Intcntl

Tue 1/6

7:45 am-12:32 pm

1 stop5h 47m

$608

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Sat 1/3

1:10 pm-9:35 pm

1 stop7h 25m

Houston George Bush Intcntl

Tue 1/6

6:30 am-5:44 pm

2 stops12h 14m

$627

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Sun 9/21

4:29 pm-4:59 pm

2 stops23h 30m

Houston George Bush Intcntl

Sun 9/28

5:59 pm-3:49 pm

2 stops22h 50m

$665

Great FallsHouston

GTF - IAH

GTFIAH

Great Falls

Sat 1/3

7:21 pm-4:57 pm

2 stops20h 36m

Houston George Bush Intcntl

Tue 1/6

5:57 pm-3:20 pm

2 stops22h 23m

$734

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Great Falls to Houston George Bush Intcntl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Houston George Bush Intcntl Airport?

The cheapest day to depart from Great Falls to Houston George Bush Intcntl Airport is on a Sunday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Sunday will often find tickets for as low as $452. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Houston George Bush Intcntl Airport on Tuesday is $667.

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

Our data shows that the cheapest Great Falls to Houston George Bush Intcntl Airport flights are usually those with departure times in the morning. Our users have found flights to Houston George Bush Intcntl Airport in the morning for as low as $576. Try not to purchase tickets at noon because they tend to be around $644. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Great Falls to Houston George Bush Intcntl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to Houston George Bush Intcntl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Great Falls to Houston George Bush Intcntl Airport (GTF to IAH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to Houston George Bush Intcntl Airport

Direct flights

None
There are no direct flights from Great Falls to Houston George Bush Intcntl Airport. There are no popular flight routes from Great Falls to Houston George Bush Intcntl Airport.
Search flight deals

  • How far is Great Falls to Houston George Bush Intcntl by plane?

    Great Falls and Houston George Bush Intcntl are 1477.1 mi apart from one another. 7h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Great Falls Airport to Houston George Bush Intcntl Airport?

    Prices for flights from Great Falls Airport to Houston George Bush Intcntl Airport were last updated today.

  • How many operators does momondo search for flights from Great Falls Airport to Houston George Bush Intcntl Airport?

  • How old do you have to be to fly from Great Falls Airport to Houston George Bush Intcntl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Great Falls Airport to Houston George Bush Intcntl Airport.

  • What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

    The travel and health documents required for your trip to Houston George Bush Intcntl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Houston George Bush Intcntl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Great Falls to Houston George Bush Intcntl Airport?

Best airlines flying from Great Falls to Houston George Bush Intcntl Airport

Compare and see reviews for airlines that fly from Great Falls to Houston George Bush Intcntl Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $147Free CancellationRating
7.9
7,982 reviews
Search Delta flights
United AirlinesPriceFrom $431Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights

Traveling to a place near Houston?

Book flights to Houston if you plan to visit one of these locations
The Woodlands
Katy
Conroe
Humble
Cypress
Spring
Montgomery
Tomball
Livingston
Jersey Village

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to Houston?

It is quick and easy to find Great Falls to Houston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Houston that suits you.

Can I find flights from Great Falls to Houston with flexible booking policies on momondo?

Yes. All flights to Houston from Great Falls on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Great Falls to Houston?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Great Falls to Houston.

I’m not ready to book a flight from Great Falls to Houston right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Houston, momondo offers a useful price alert feature which will track prices for flights to Houston from Great Falls and alert you when they change.

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