$140 Cheap Flights from Great Falls (GTF) to Phoenix (PHX)

View $140 flight on Tue, Oct 21, 2025Opens in a new window

Popular airlines from Great Falls, MT (GTF-Great Falls Intl.) to Phoenix Sky Harbor Intl. Airport (PHX)

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Cheap Flights from Great Falls to Phoenix (GTF-PHX)

Prices were available within the past 7 days and start at $140 for one-way flights and $251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Oct 28 - Tue, Nov 11
GTF
Great Falls
PHX
Phoenix
$251 Roundtrip, found 3 days ago
$251
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Oct 28 from Great Falls to Phoenix, returning Tue, Nov 11, priced at $251 found 3 days ago
Hawaiian Airlines
Sat, Nov 15 - Tue, Nov 18
GTF
Great Falls
PHX
Phoenix
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Sat, Nov 15 from Great Falls to Phoenix, returning Tue, Nov 18, priced at $269 found 6 days ago
Delta
Tue, Oct 28 - Sat, Nov 8
GTF
Great Falls
PHX
Phoenix
$273 Roundtrip, found 3 days ago
$273
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Oct 28 from Great Falls to Phoenix, returning Sat, Nov 8, priced at $273 found 3 days ago
Delta
Mon, Dec 15 - Tue, Jan 6
GTF
Great Falls
PHX
Phoenix
$281 Roundtrip, found 3 days ago
$281
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Dec 15 from Great Falls to Phoenix, returning Tue, Jan 6, priced at $281 found 3 days ago
Hawaiian Airlines
Mon, Nov 3 - Sat, Nov 15
GTF
Great Falls
PHX
Phoenix
$292 Roundtrip, found 5 days ago
$292
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Mon, Nov 3 from Great Falls to Phoenix, returning Sat, Nov 15, priced at $292 found 5 days ago
Delta
Sat, Oct 4 - Tue, Oct 14
GTF
Great Falls
PHX
Phoenix
$293 Roundtrip, found 3 days ago
$293
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Oct 4 from Great Falls to Phoenix, returning Tue, Oct 14, priced at $293 found 3 days ago
Hawaiian Airlines
Tue, Oct 7 - Thu, Oct 16
GTF
Great Falls
PHX
Phoenix
$294 Roundtrip, found 3 days ago
$294
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Tue, Oct 7 from Great Falls to Phoenix, returning Thu, Oct 16, priced at $294 found 3 days ago
Delta
Sat, Oct 4 - Tue, Oct 7
GTF
Great Falls
PHX
Phoenix
$295 Roundtrip, found 3 days ago
$295
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Oct 4 from Great Falls to Phoenix, returning Tue, Oct 7, priced at $295 found 3 days ago
Alaska Airlines
Sat, Feb 21 - Wed, Feb 25
GTF
Great Falls
PHX
Phoenix
$309 Roundtrip, found 6 days ago
$309
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Feb 21 from Great Falls to Phoenix, returning Wed, Feb 25, priced at $309 found 6 days ago
United
Tue, Oct 7 - Wed, Oct 8
GTF
Great Falls
PHX
Phoenix
$338 Roundtrip, found 3 days ago
$338
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 7 from Great Falls to Phoenix, returning Wed, Oct 8, priced at $338 found 3 days ago

Find the cheapest month to fly from Great Falls (GTF) to Phoenix (PHX)

January is typically the cheapest month to fly

From $231 - $577 per traveler.

Frequently asked questions

How much does a flight from Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX) cost?
Grab a cheap one-way flight from $140 or cheap return flight from $251 from Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX)?
October is the least expensive month to fly from GTF to PHX. Avoiding peak travel times is often the key to scoring lower fares.
What is the cheapest airline that flies from Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX)?
To find the cheapest airline that'll fly you from GTF to PHX, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX)?
There aren't any daily direct flights from Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from GTF to PHX?
Usually you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the season, carrier 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 Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX)?
To avoid possible delays on the Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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.
What airports do you fly into for Phoenix from Great Falls Intl. Airport (GTF)?
Phoenix - Mesa Gateway Airport (AZA) is the only airport in Phoenix with direct flights from Great Falls Intl. Airport (GTF). Browse the options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX) last-minute?
Last-minute fares from GTF to PHX are usually more expensive. To lock in the lowest rates, start searching for flights early. That being said, if you can play around with your travel dates, you may find a cheap fare right before your journey.
Is it cheaper to book a GTF to PHX flight and hotel package?
You'll generally save money by booking a GTF to PHX flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal accommodations and flights, consider other add-ons like activities, car rentals and tours.
Can I cancel or change the date of my flight from Great Falls Intl. Airport (GTF) to Sky Harbor Intl. Airport (PHX)?
Generally, it's possible to cancel or reschedule your GTF to PHX 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 possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Great Falls Intl.
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$251
Distance
971 mi

Book with confidence

Book with confidence

Great Falls to Phoenix Flights

The cheapest times to fly from Great Falls to Phoenix

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 Great Falls to Phoenix are during the month of October. You can find some of the cheapest flights from Great Falls to Phoenix with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Great Falls to Phoenix: 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 Great Falls to Phoenix

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 Great Falls to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from $140 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 Great Falls to Phoenix 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 Great Falls to Phoenix 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.

 

Great Falls to Phoenix Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.