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Cheap Flights from Great Falls International to Denver International

Compare Great Falls International to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

Book the best Denver International fare with no extra fees

Flight deals from Great Falls International to Denver International

Looking for a cheap last-minute deal or the best return flight from Great Falls International Airport to Denver International Airport? If you want to travel next month, return fares start from R 4,388. Find the lowest prices on one-way and return tickets right here.
Denver.R 2,516 per passenger.Departing Thu, 8 Oct.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Great Falls International on Thu, 8 Oct, arriving in Denver International.Price includes taxes and charges.From R 2,516, select.
Denver.R 2,978 per passenger.Departing Sun, 9 Aug.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Great Falls International on Sun, 9 Aug, arriving in Denver International.Price includes taxes and charges.From R 2,978, select.
Denver.R 3,384 per passenger.Departing Thu, 30 Jul.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Great Falls International on Thu, 30 Jul, arriving in Denver International.Price includes taxes and charges.From R 3,384, select.
Denver.R 3,477 per passenger.Departing Fri, 11 Sep.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Great Falls International on Fri, 11 Sep, arriving in Denver International.Price includes taxes and charges.From R 3,477, select.
Denver.R 4,055 per passenger.Departing Wed, 5 Aug.One-way flight with United.Outbound direct flight with United departs from Great Falls International on Wed, 5 Aug, arriving in Denver International.Price includes taxes and charges.From R 4,055, select.
Denver.R 4,057 per passenger.Departing Thu, 30 Jul.One-way flight with United.Outbound direct flight with United departs from Great Falls International on Thu, 30 Jul, arriving in Denver International.Price includes taxes and charges.From R 4,057, select.
Denver.R 4,063 per passenger.Departing Tue, 1 Dec.One-way flight with United.Outbound direct flight with United departs from Great Falls International on Tue, 1 Dec, arriving in Denver International.Price includes taxes and charges.From R 4,063, select.
Denver.R 4,063 per passenger.Departing Fri, 22 Jan.One-way flight with United.Outbound direct flight with United departs from Great Falls International on Fri, 22 Jan, arriving in Denver International.Price includes taxes and charges.From R 4,063, select.
Denver.R 4,063 per passenger.Departing Mon, 2 Nov.One-way flight with United.Outbound direct flight with United departs from Great Falls International on Mon, 2 Nov, arriving in Denver International.Price includes taxes and charges.From R 4,063, select.
Denver.R 4,064 per passenger.Departing Wed, 14 Oct.One-way flight with United.Outbound direct flight with United departs from Great Falls International on Wed, 14 Oct, arriving in Denver International.Price includes taxes and charges.From R 4,064, select.
Denver.R 4,067 per passenger.Departing Sun, 13 Sep.One-way flight with United.Outbound direct flight with United departs from Great Falls International on Sun, 13 Sep, arriving in Denver International.Price includes taxes and charges.From R 4,067, select.

Find the cheapest month to fly from Great Falls International to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Great Falls International to Denver International flights are currently cheapest in October.
Jul
from R 3,384
Aug
from R 2,978
Sep
from R 3,477
Oct
from R 2,516
Nov
from R 4,063
Dec
from R 4,063
Jan
from R 4,063
Feb
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Mar
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Apr
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May
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Jun
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Direct flights from Great Falls International to Denver International

Great Falls International to Denver International: Alternative routes

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

Denver International

30km from central Denver
ClosestCheapest
from R 2,516
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Great Falls to Denver: Flight information

The things to know before you go.
Cheapest flight foundR 2,516
Cheapest month to flyOctober
Average flight time1 hr, 59 mins
Most popular airlineUnited
Average flights per week16

Finding cheap flights from Great Falls International to Denver International: Frequently asked questions

The best price we found for a return flight from Great Falls International to Denver International is R 4,219. 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.
1 hour and 59 minutes is the average flight time from Great Falls International to Denver International.
United flies direct from Great Falls International to Denver International.
As of July 2026, there are 16 flights per week flying from Great Falls International to Denver International.
The cheapest month to fly from Great Falls International to Denver International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Great Falls International Airport to Denver International Airport on Friday, 11 September 2026.
Yes – the average flight time is 1 hour and 59 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 Denver International 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 Denver is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, United offers the cheapest flight tickets to Denver International.

Flying from Great Falls International Airport (GTF) to Denver International Airport (DEN): what you need to know

  • Jump on a direct flight from Great Falls International Airport to Denver International Airport and you'll be in the air for an average of 1 hour 55 minutes.

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

  • You can choose from 14 weekly Great Falls International Airport to Denver International Airport flights. The 06:25 departure with United Airlines is the earliest you can take. United Airlines operates the last service of the day at 14:26.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to board your GTF to DEN flight.

  • Flying during a peak time such as July? Major public holidays and other high seasons can lead to longer lines at check-in and security. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

  • United is your gateway to exploring Denver (and maybe even some other exciting corners of the United States!). Check out the direct flights from Great Falls International Airport to Denver International Airport offered by this popular airline.

  • The majority of passengers choose to travel with United on this route.

  • United is the most punctual carrier that operates GTF to DEN flights. An exceptional 88.57% of its services on this route arrive as scheduled.

  • We make it easy to book a flight with a stopover. To see all your options for tickets from Great Falls International Airport to Denver International Airport, uncheck 'Direct flights only.' Then, pick a flight with a stop long enough to tour your chosen city. Worthwhile stopovers between GTF and DEN include:

    • Minneapolis St Paul Airport

    • Harry Reid International Airport

    • Salt Lake City Airport

Handy information about Great Falls International Airport (GTF)

  • GTF is located at 2800 Terminal Drive.

  • 85% of flights departing from Great Falls International Airport touch down at their destination on schedule. With its impressive on-time stats, disruptions are unlikely when flying out of GTF.

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

  • You can expect a journey time of around 25 minutes on public transport.

  • Get your travels off to a stress-free start by staying near GTF. Whether you're taking an early flight from Great Falls International Airport to Denver International Airport or just don't want to be rushed, these stays have you covered:

Arriving at Denver International Airport (DEN)

  • After your Great Falls International Airport to Denver International Airport flight has touched down, relax and unwind at a hotel close by. Baymont by Wyndham Denver International Airport is a comfortable option within easy reach of DEN.

  • Grab a Denver International Airport rental car and discover Denver and beyond with your own set of wheels. Routes Car Rentals, Dollar and Budget are top providers you can book with here.

  • Booking your vehicle from Denver International Airport about one week in advance boosts your odds of scoring a great price.

Getting from Denver International Airport (DEN) to central Denver

  • The address for DEN is 8500 Pena Boulevard.

  • Denver International Airport is roughly 40 kilometres from central Denver. The drive time takes about 35 minutes.

  • Getting there by public transport will take you roughly 35 minutes.

When to fly to Denver International Airport (DEN)

  • July is the most popular month for flights from Great Falls International Airport to Denver International Airport. For smaller crowds, go to Denver in January.

  • The warmest month in Denver is July, with the temperature ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your flights from Great Falls International Airport to Denver International Airport in this month if this is the type of weather you enjoy.

  • Search for cheap tickets from GTF to DEN in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between -9ºC (16ºF) and 7ºC (45ºF) on average.

Explore more of the United States

  • You've seen Denver, now it's time to explore other corners of the United States. Journey around 105 kilometres south to Colorado Springs to tick off its top attractions. From Garden of the Gods to Pikes Peak Region Attractions and Red Rock Canyon, you've got a jam-packed schedule ahead.

  • Around 13 kilometres east of Denver, Aurora is another essential stop in the United States. Start your sightseeing at Plains Conservation Centre, DeLaney Homestead Historic District and Aircraft viewing.

Plan the rest of your trip from Great Falls to Denver

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