$169 Cheap United flights Phoenix (PHX) to Great Falls (GTF)

View $169 flight on Tue, Nov 18, 2025Opens in a new window
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$169 Cheap United flights Phoenix (PHX) to Great Falls (GTF)

Prices were available within the past 7 days and start at $169 for one-way flights and $338 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Dec 10 - Wed, Dec 17
PHX
Phoenix
GTF
Great Falls
$338 Roundtrip, found 8 hours ago
$338
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Dec 10 from Phoenix to Great Falls, returning Wed, Dec 17, priced at $338 found 8 hours ago
Flights from Phoenix (PHX) to Great Falls (GTF)
Origin airport
Sky Harbor Intl.
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Popular airline
Alaska Airlines
Distance
971 mi

Frequently asked questions

How much is a United Airlines flight from Sky Harbor Intl. Airport (PHX) to Great Falls Intl. Airport (GTF)?
You'll discover cheap return United Airlines flights from $338 from PHX to GTF by sorting your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $169 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from PHX to GTF with United Airlines?
Search for return or one-way flights to Great Falls in January or February. You could find a cheap fare with United Airlines during these off-peak travel months.
What is the cheapest time to book flights from Sky Harbor Intl. Airport (PHX) to Great Falls Intl. Airport (GTF) with United Airlines?
Search for affordable United Airlines flights from Sky Harbor Intl. Airport (PHX) to Great Falls Intl. Airport (GTF) one to three months prior to your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and journey, the best day to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Sky Harbor Intl. Airport (PHX) to Great Falls Intl. Airport (GTF)?
To figure out if there's a direct trip from PHX to GTF with United Airlines or any other airlines, use our "Nonstop" filter when searching for flights.
What is the earliest United Airlines flight from PHX to GTF?
Sort your results by "Early Morning" and "Morning" to find the earliest departures from PHX to GTF. Heading off early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Great Falls?
United Airlines flights from Sky Harbor Intl. Airport (PHX) to Great Falls arrive at Great Falls Intl. Airport (GTF). This is the main gateway here.
Why fly with United Airlines from PHX to GTF?
A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to depart from PHX to GTF with United Airlines. Plus, by joining Expedia's free One Key™ program, you can earn OneKeyCash™* on top of United Airlines's loyalty program earnings. It's yours to use wherever your next trip takes you.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Sky Harbor Intl. Airport (PHX) to Great Falls Intl. Airport (GTF)?
Changes are often free within 24 hours of making your booking, but your airline may add a charge after that. For more details about modifying your flights, go to your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your itinerary without additional costs, tick the "Changes included" or "No cancel fee" filter when planning your next break.

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