Cheap Flights from Great Falls (GTF) to Phoenix (AZA)

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      Allegiant Air

      Compare Great Falls International to Phoenix-Mesa Gateway flight deals

      Find the cheapest month or even day of the year to fly to Phoenix-Mesa Gateway

      Book the best Phoenix-Mesa Gateway fare with no extra fees

      Flight deals from Great Falls International to Phoenix-Mesa Gateway

      Looking for a cheap last-minute deal or the best return flight from Great Falls International to Phoenix-Mesa Gateway? Find the lowest prices on one-way and return tickets right here.

      Find the cheapest month to fly from Great Falls International to Phoenix-Mesa Gateway

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Great Falls International to Phoenix-Mesa Gateway flights are currently cheapest in November.

      Direct flights from Great Falls International to Phoenix-Mesa Gateway

      Allegiant Air

      Great Falls International to Phoenix-Mesa Gateway: Alternative routes

      Compare routes from Great Falls International to Phoenix below. You may find an airport to fly into that's cheaper, faster, or easier than Phoenix-Mesa Gateway.

      Great Falls to Phoenix: Flight information

      The things to know before you go.
      Cheapest flight found$146
      Cheapest month to flyOctober
      Average flight time2 hrs, 36 mins
      Most popular airlineAllegiant Air
      Average flights per week2

      Finding cheap flights from Great Falls International to Phoenix-Mesa Gateway: Frequently asked questions

      The best price we found for a return flight from Great Falls International to Phoenix-Mesa Gateway is $146. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      2 hours and 36 minutes is the average flight time from Great Falls International to Phoenix-Mesa Gateway.
      Allegiant Air flies direct from Great Falls International to Phoenix-Mesa Gateway.
      As of August 2026, there are 2 flights per week flying from Great Falls International to Phoenix-Mesa Gateway.
      The cheapest month to fly from Great Falls International to Phoenix-Mesa Gateway is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Great Falls International Airport to Phoenix-Mesa Gateway Airport on Thursday, 29 October 2026.
      Yes – the average flight time is 2 hours and 36 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Phoenix-Mesa Gateway but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Phoenix is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Allegiant Air offers the cheapest flight tickets to Phoenix-Mesa Gateway.

      Travelling from Great Falls International Airport (GTF) to Phoenix-Mesa Gateway Airport (AZA): what you need to know

      • Around 2 hours 30 minutes is how long you'll be travelling on a direct flight from Great Falls International Airport to Phoenix-Mesa Gateway Airport.

      • Phoenix's timezone is UTC-7, which is the same as Great Falls.

      • To ensure you catch your GTF to AZA flight, allow plenty of time for things like check-in and baggage drop. Arriving two hours before international departures and an hour before domestic flights is the general rule.

      • During popular months such as July, it's best to get to the airport well in advance. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight when you travel during a peak period in general.

      • Allegiant Air offers direct flights from Great Falls International Airport to Phoenix-Mesa Gateway Airport. Book with this popular airline, then get ready to check out the sights in Phoenix — and maybe even more of the United States if you have time.

      • The airline that tops the list for bookings on this route is Allegiant Air.

      • The most punctual carrier operating GTF to AZA flights is Allegiant Air. Its services arrive as scheduled 72.97% of the time.

      • Pick a stopover if you'd love to break up your flight. Simply uncheck 'Direct flights only' to look at all your options for tickets from Great Falls International Airport to Phoenix-Mesa Gateway Airport. Minneapolis St Paul Airport is a top stopover on the GTF to AZA route.

      How to find the cheapest flights from Great Falls International Airport (GTF) to Phoenix-Mesa Gateway Airport (AZA)

      • $69 is currently the lowest price for a one-way Great Falls International Airport to Phoenix-Mesa Gateway Airport flight. A return flight starts from $146. These prices can change based on availability.

      • Don't leave everything to the last moment. You're more likely to get cheap tickets from GTF to AZA if you book early. Airlines often have some amazing early bird deals.

      • The 'Whole month' search tool shows you the cheapest flights from Great Falls International Airport to Phoenix-Mesa Gateway Airport across the month. It's a great way to find a bargain if your plans are flexible.

      • You don't need to check back in every day to see if fares have gone down when you set up a Price Alert. We'll update you as soon as the price changes on cheap flights from GTF to AZA.

      • Tailor your flights with filters. Select your arrival and departure times, airlines and total journey duration. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Great Falls International Airport to Phoenix-Mesa Gateway Airport.

      Handy information about Great Falls International Airport (GTF)

      • GTF's address is 2800 Terminal Drive.

      • Great Falls International Airport maintains a strong on-time performance, so flight disruptions are less likely. Departures from GTF land at their destination as scheduled 85% of the time.

      • Central Great Falls to Great Falls International Airport is approximately 8 kilometres. Depending on traffic, it'll take you about 10 minutes to get there if you're driving, catching a taxi or ride-sharing.

      • The trip when using public transport usually takes 25 minutes.

      • Get your break off to a hassle-free start by staying near GTF. Whether you're boarding an early flight from Great Falls International Airport to Phoenix-Mesa Gateway Airport or want to avoid feeling rushed, these stays have you covered:

      Arriving at Phoenix-Mesa Gateway Airport (AZA)

      When to fly to Phoenix-Mesa Gateway Airport (AZA)

      • April is the most popular month for flights from Great Falls International Airport to Phoenix-Mesa Gateway Airport. To steer clear of the crowds, travel to Phoenix in November.

      • When booking your flight from Great Falls International Airport to Phoenix-Mesa Gateway Airport, consider the type of weather you enjoy. July is the warmest month in Phoenix, with the temperature ranging from 27ºC (81ºF) to 45ºC (113ºF).

      • January sees average temperatures of between 4ºC (39ºF) and 21ºC (70ºF). Look for cheap tickets from GTF to AZA sometime then if you like cooler conditions.

      Explore more of the United States

      • San Diego is just one of the many cities in the United States waiting to be explored after you've experienced Phoenix. Around 483 kilometres away to the west, well-known attractions include San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

      • If there's time to check out another major destination in the United States, consider Las Vegas, roughly 418 kilometres north-west of Phoenix. Ciudad del Pecado o Las Vegas, Las Vegas Strip and Fountains of Bellagio are key highlights.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.