$203 Cheap Flights from Washington (IAD) to Great Falls (GTF)

View $203 flight on Thu, Dec 4, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Great Falls, MT (GTF-Great Falls Intl.)

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Cheap Flights from Washington to Great Falls (IAD-GTF)

Prices were available within the past 7 days and start at $203 for one-way flights and $304 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Sat, Nov 15 - Mon, Nov 17
IAD
Washington
GTF
Great Falls
$304 Roundtrip, found 1 day ago
$304
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Nov 15 from Washington to Great Falls, returning Mon, Nov 17, priced at $304 found 1 day ago
Hawaiian Airlines
Wed, Nov 12 - Tue, Nov 18
IAD
Washington
GTF
Great Falls
$314 Roundtrip, found 1 day ago
$314
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Nov 12 from Washington to Great Falls, returning Tue, Nov 18, priced at $314 found 1 day ago
Alaska Airlines
Wed, Nov 12 - Mon, Nov 17
IAD
Washington
GTF
Great Falls
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Nov 12 from Washington to Great Falls, returning Mon, Nov 17, priced at $324 found 1 day ago
Alaska Airlines
Fri, Nov 14 - Mon, Nov 17
IAD
Washington
GTF
Great Falls
$334 Roundtrip, found 1 day ago
$334
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Nov 14 from Washington to Great Falls, returning Mon, Nov 17, priced at $334 found 1 day ago
Hawaiian Airlines
Wed, Nov 12 - Sun, Nov 23
IAD
Washington
GTF
Great Falls
$344 Roundtrip, found 1 day ago
$344
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Nov 12 from Washington to Great Falls, returning Sun, Nov 23, priced at $344 found 1 day ago
Hawaiian Airlines
Tue, Nov 11 - Tue, Nov 18
IAD
Washington
GTF
Great Falls
$349 Roundtrip, found 2 days ago
$349
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Nov 11 from Washington to Great Falls, returning Tue, Nov 18, priced at $349 found 2 days ago
Hawaiian Airlines
Sat, Nov 15 - Tue, Nov 18
IAD
Washington
GTF
Great Falls
$354 Roundtrip, found 15 hours ago
$354
Roundtrip
found 15 hours ago
Select Hawaiian Airlines flight, departing Sat, Nov 15 from Washington to Great Falls, returning Tue, Nov 18, priced at $354 found 15 hours ago
Hawaiian Airlines
Tue, Nov 11 - Mon, Nov 17
IAD
Washington
GTF
Great Falls
$359 Roundtrip, found 2 days ago
$359
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Nov 11 from Washington to Great Falls, returning Mon, Nov 17, priced at $359 found 2 days ago
Delta
Tue, Mar 3 - Wed, Mar 18
IAD
Washington
GTF
Great Falls
$401 Roundtrip, found 3 days ago
$401
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Mar 3 from Washington to Great Falls, returning Wed, Mar 18, priced at $401 found 3 days ago
United
Tue, Nov 4 - Tue, Nov 11
IAD
Washington
GTF
Great Falls
$472 Roundtrip, found 2 days ago
$472
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 4 from Washington to Great Falls, returning Tue, Nov 11, priced at $472 found 2 days ago

Alternative airports near Great Falls

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

Select flight to Great Falls Intl. GTF. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $472
GTF
Great Falls Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $472

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF) cost?
Get a cheap one-way flight from $203 or cheap return flight from $304 from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF)?
Planning your getaway for November may help you find better deals, as it's the cheapest month for flights between IAD and GTF. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest IAD to GTF flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF)?
You'll need to catch a flight with a layover if you're traveling from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from IAD to GTF?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF)?
To arrive at Great Falls Intl. Airport (GTF) on time, select a flight that leaves Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF) last-minute?
Waiting until just before your trip to book your flight from IAD to GTF often results in higher prices. While you might find some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible for a better chance of landing a bargain.
Is it cheaper to book an IAD to GTF flight and hotel package?
You can save money by securing an IAD to GTF 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 it all in one convenient place. Once you've chosen your preferred accommodations and flights, consider other add-ons like car rentals, tours and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Great Falls Intl. Airport (GTF)?
In most instances, you're able to cancel or reschedule your IAD to GTF flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you want further details, go to our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$304
Distance
1789 mi

Book with confidence

Washington to Great Falls Flights

The cheapest times to fly from Washington to Great Falls

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

 

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

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

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 Washington to Great Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $203 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 Washington to Great Falls 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 Washington to Great Falls 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.

 

Washington to Great Falls Flights

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