$150 Cheap Flights from Great Falls (GTF) to Denver (DEN)

View $150 flight on Sat, Aug 30, 2025Opens in a new window

Popular airlines from Great Falls, MT (GTF-Great Falls Intl.) to Denver Intl. Airport (DEN)

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Cheap Flights from Great Falls to Denver (GTF-DEN)

Prices were available within the past 7 days and start at $150 for one-way flights and $195 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Sep 18 - Tue, Sep 30
GTF
Great Falls
DEN
Denver
$195 Roundtrip, just found
$195
Roundtrip
just found
Select United flight, departing Thu, Sep 18 from Great Falls to Denver, returning Tue, Sep 30, priced at $195 just found
United
Sat, Aug 30 - Mon, Sep 1
GTF
Great Falls
DEN
Denver
$202 Roundtrip, found 1 day ago
$202
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 30 from Great Falls to Denver, returning Mon, Sep 1, priced at $202 found 1 day ago
United
Thu, Sep 18 - Tue, Sep 30
GTF
Great Falls
DEN
Denver
$205 Roundtrip, just found
$205
Roundtrip
just found
Select United flight, departing Thu, Sep 18 from Great Falls to Denver, returning Tue, Sep 30, priced at $205 just found
Hawaiian Airlines
Sat, Feb 21 - Sat, Mar 7
GTF
Great Falls
DEN
Denver
$214 Roundtrip, found 18 hours ago
$214
Roundtrip
found 18 hours ago
Select Hawaiian Airlines flight, departing Sat, Feb 21 from Great Falls to Denver, returning Sat, Mar 7, priced at $214 found 18 hours ago
Delta
Fri, Aug 29 - Wed, Sep 3
GTF
Great Falls
DEN
Denver
$214 Roundtrip, just found
$214
Roundtrip
just found
Select Delta flight, departing Fri, Aug 29 from Great Falls to Denver, returning Wed, Sep 3, priced at $214 just found
United
Fri, Sep 5 - Sun, Sep 7
GTF
Great Falls
DEN
Denver
$215 Roundtrip, found 18 hours ago
$215
Roundtrip
found 18 hours ago
Select United flight, departing Fri, Sep 5 from Great Falls to Denver, returning Sun, Sep 7, priced at $215 found 18 hours ago
Delta
Wed, Nov 19 - Mon, Dec 8
GTF
Great Falls
DEN
Denver
$224 Roundtrip, found 16 hours ago
$224
Roundtrip
found 16 hours ago
Select Delta flight, departing Wed, Nov 19 from Great Falls to Denver, returning Mon, Dec 8, priced at $224 found 16 hours ago
Delta
Tue, Aug 12 - Sat, Aug 16
GTF
Great Falls
DEN
Denver
$234 Roundtrip, found 13 hours ago
$234
Roundtrip
found 13 hours ago
Select Delta flight, departing Tue, Aug 12 from Great Falls to Denver, returning Sat, Aug 16, priced at $234 found 13 hours ago
United
Thu, Aug 28 - Mon, Sep 1
GTF
Great Falls
DEN
Denver
$235 Roundtrip, found 9 hours ago
$235
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Aug 28 from Great Falls to Denver, returning Mon, Sep 1, priced at $235 found 9 hours ago
Alaska Airlines
Mon, Sep 8 - Wed, Sep 10
GTF
Great Falls
DEN
Denver
$306 Roundtrip, found 1 day ago
$306
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Sep 8 from Great Falls to Denver, returning Wed, Sep 10, priced at $306 found 1 day ago

Find the cheapest month to fly from Great Falls (GTF) to Denver (DEN)

August is typically the cheapest month to fly

From $194 - $518 per traveler.

Graph displaying average flight prices per month

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $205
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $205
0
Flights from Great Falls (GTF) to Denver (DEN)
Origin airport
Great Falls Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$194
Distance
623 mi

Great Falls to Denver Flights

The cheapest times to fly from Great Falls to Denver

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

 

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

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

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 Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $150 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 Denver 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 Denver 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.

 

Frequently asked questions

How much does a flight from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN) cost?
Cheap round-trip fares from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN) start at $195. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving GTF on August 14 2025 and touching down at DEN. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from GTF to DEN?
The cheapest flights from GTF to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN)?
Board a nonstop flight with United Airlines and fly straight from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN).
What is the cheapest airline that flies from GTF to DEN?
Currently, the cheapest carrier offering one-way flights from GTF to DEN is United. You can take off on this route from $214. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from GTF on September 8 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN)?
When departing from Great Falls Intl. Airport (GTF), you'll have a choice from an average of 2 daily direct flights to Denver Intl. Airport (DEN).
What are the most popular departure times for flights from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN)?
More people fly between GTF and DEN at 2 PM than at any other time. Prefer a quieter experience? Try choosing a quieter departure window and it's possible you'll save on your fare as well.
What day of the week has the most flights from GTF to DEN?
Friday has the most flights from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN). Consider jetting off on this day and you'll have a greater chance of finding a schedule that works for you.
What is the earliest flight from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN)?
Hop on the earliest flight at around 6:45AM UTC-7, leaving from Great Falls Intl. Airport (GTF). You'll be flying for approximately 2h 9m, arriving at Denver Intl. Airport (DEN) at approximately 8:54AM UTC-7.
How long does it take to fly from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN)?
The average flight duration from GTF to DEN is 2 hours and 7 minutes, covering a total distance of 620 mi.
What airline has the least delays from GTF to DEN?
Consider booking with United Airlines if you'd like to go straight from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN) without any holdups. This airline has the best track record for punctuality, with an on-time score of 82%. Want to be updated if anything changes? You can check your flight status using the Expedia App.
What is the best time to fly from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN)?
To avoid potential delays on the Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN) route, fly before 3 PM. Later departures are 22% more likely to be canceled.**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 Denver from Great Falls Intl. Airport (GTF)?
Browse your flight options from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN). This is the only airport in Denver you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN) last-minute?
Booking your plane ticket from GTF to DEN just before your trip is generally more expensive. But if there's some wiggle room with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a GTF to DEN flight and hotel package?
You can save money by booking a GTF to DEN 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 convenient place. Once you've chosen your ideal accommodations and flights, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Great Falls Intl. Airport (GTF) to Denver Intl. Airport (DEN)?
If you reserved your GTF to DEN flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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