Cheap flights from Great Falls International to Denver

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Flight deals from Great Falls International Airport to Denver

Looking for a cheap last-minute deal or the best round-trip flight from Great Falls International Airport to Denver? If you want to travel next month, round-trip fares start from $240. Find the lowest prices on one-way and round-trip tickets right here.

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

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 flights are currently cheapest in February.

Direct flights from Great Falls International to Denver

Alternative Great Falls International to Denver routes

Looking for the cheapest, fastest or easiest route from Great Falls International to Denver? You could fly into the following airports instead.

Great Falls to Denver: Flight information

The things to know before you go.
Cheapest flight found$240
Cheapest month to flyFebruary
Average flight time2 hrs, 4 mins
Most popular airlineUnited
Average flights per week108

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

There are 4 airports in Denver: Denver Arapahoe Co, Broomfield, Denver International, and Northern Colorado Regional.
The best price we found for a round-trip flight from Great Falls International to Denver is $240. 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 4 minutes is the average flight time from Great Falls International to Denver.
United and SkyWest Airlines fly direct from Great Falls International to Denver.
There are 54 flights per week flying from Great Falls International to Denver, as of January 2026.
The cheapest month to fly from Great Falls International to Denver is usually February.
If you're flying from Great Falls International Airport, the cheapest airport near Denver is Denver International – which is 29.9 km away from the center of Denver. We've found flights to this airport from $240.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Great Falls International Airport to Denver on Wednesday, February 4, 2026.
Yes – the average flight time is 2 hours and 4 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 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.
In January, the average temperature is usually around -1°C. July is typically the warmest month in Denver, when it usually averages around 31°C. You can expect the least rain in January. The coldest month is December, with temperatures averaging -6°C. The rainiest month is July.
Currently, United offers the cheapest flight tickets to Denver.

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

  • Expect to be traveling for 2 hours. That's the average journey time for a direct flight from Great Falls International Airport to Denver.

  • Great Falls (the location of Great Falls International Airport) and Denver share the same timezone — UTC-6.

  • With 14 weekly flights between the two airports, Great Falls International Airport (GTF) to Denver International Airport (DEN) is the busiest route. United Airlines operates the earliest flight at 06:25. If you prefer to get more out of your day before taking off, the last flight from GTF to DEN is with United Airlines at 14:26.

  • To avoid rushing for your GTF to Denver flight, allow plenty of time to navigate the airport and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general travel rule.

  • Longer lines at check-in and security are likely if you're flying during high season, so allow even more breathing space. A good rule of thumb for peak periods? Get there up to four hours early for international flights and two hours for domestic departures.

  • Start your trip at GTF and fly nonstop to Denver International Airport (DEN). That's where you can expect to land when searching for Great Falls International Airport to Denver tickets.

  • Book your seat with United Airlines. This popular airline offers direct flights from Great Falls International Airport to Denver.

  • Located around 5 kilometers from central Great Falls, GTF can be reached in about 10 minutes by car, depending on traffic. Traveling on public transport will take roughly 4 hours.

  • Looking for a hotel close to GTF? If you've booked an early flight from Great Falls International Airport to Denver, these stays will put you moments from your departure gate:

  • Great Falls International Airport maintains a solid on-time performance, making delays less likely. Departures from GTF arrive at their destination as scheduled 83.48% of the time.

  • You'll find GTF at 2800 Terminal Drive.

How to find the cheapest flights from Great Falls International Airport (GTF) to Denver

  • $131 is the cheapest price we've found for a one-way Great Falls International Airport to Denver flight. A return flight ticket right now is $240. Depending on the availability and when you book, these fares may change.

  • Lock in cheap flights from GTF to Denver by booking two months ahead. According to our research, that's the best time for finding the biggest deals.

  • The best month for landing cheap Great Falls International Airport to Denver tickets is June. Use the 'Whole month' tool to compare prices, then select the dates that offer the lowest fares.

  • You don't need to check in daily to find out if fares have dropped when you create a Price Alert. We'll update you as soon as there's an even bigger deal on cheap flights from GTF to Denver.

  • Find an affordable flight from Great Falls International Airport to Denver with the help of our filters. Choose your preferred departure time, duration and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Denver

Denver International Airport (DEN)

  • Denver International Airport (DEN) is around 40 kilometers from central Denver. If you're grabbing a cab or a ride-share, the drive takes about 35 minutes.

  • Getting there by public transport typically takes 1 hour 30 minutes.

  • Jump off your flight from Great Falls International Airport to Denver and be sprawled out in your hotel bed shortly after. If you're looking for a convenient option just a short drive from DEN, check out Baymont by Wyndham Denver International Airport.

  • Explore without limits with a Denver International Airport rental car. Book your wheels from Routes Car Rentals, Dollar or Budget and see more of Denver and beyond.

  • Reserving your vehicle from Denver International Airport about one week in advance of your flight from GTF to Denver can help you secure the lowest rate.

  • You'll find DEN at 8500 Pena Boulevard.

Best time to go to Denver

  • Before securing your flights from Great Falls International Airport to Denver, consider which time of year is best for you. High season in Denver offers a bustling atmosphere and plenty of activities, while low season brings cheaper hotel rates and smaller crowds.

  • Lock in a Great Falls International Airport to Denver flight ticket with a departure in July to explore the city during its warmest month. Expect temperatures to range from 14ºC (57ºF) to 32ºC (90ºF).

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

More about Denver

Explore more of United States

  • Denver is easy to fall in love with, but there are so many other parts of United States waiting to be explored. About 105 kilometers south of Denver, a visit to Colorado Springs will keep your itinerary busy. Start with leading attractions like US Northern Command (USNORTHCOM) / North American Aerospace Defense Command (NORAD) Headquarters, Cheyenne Mountain Air Force Station and National Strength and Conditioning Association (NSCA).

  • Pueblo is another standout destination in United States and is around 161 kilometers south of Denver. No journey is complete without experiencing Pueblo Weisbrod Aircraft Museum, Rosemount Museum and Pueblo Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.