CA $447 Cheap Flights from Washington (IAD) to Great Falls (GTF)

View CA $447 flight on Fri, Aug. 22, 2025Opens in a new window

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

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Cheap flights from Washington (IAD) to Great Falls (GTF)

Prices were available within the past 7 days and start at CA $447 for one-way flights and CA $801 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Aug. 28 - Tue, Sep. 2
IAD
Washington
GTF
Great Falls
CA $801 Roundtrip, found 1 day ago
CA $801
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Aug. 28 from Washington to Great Falls, returning Tue, Sep. 2, priced at CA $801 found 1 day ago
Alaska Airlines
Thu, Aug. 28 - Tue, Sep. 2
IAD
Washington
GTF
Great Falls
CA $887 Roundtrip, found 1 day ago
CA $887
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Aug. 28 from Washington to Great Falls, returning Tue, Sep. 2, priced at CA $887 found 1 day ago
Flight from Washington to Great Falls (IAD - GTF) route information
Origin airport
Washington Dulles Intl.
Destination airport
Great Falls Intl.
Airlines serving
Alaska Airlines
Roundtrip price
CA $801
Distance
2863 km

Chantilly to Great Falls Flights

The easy way to book your flights from Washington to Great Falls 

With Expedia, it’s simple to find and book flights to Great Falls from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 19 airlines that cover this route. There are nonstop flights to Great Falls Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to Great Falls today, tomorrow, or this week.  

 

Save dollars with cheap flights from Washington Dulles Intl., IAD to Great Falls Intl., GTF 

Sort your search results by price to find great deals on your flight from Washington to Great Falls—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Great Falls from Washington currently is just CA $801 rising to CA $1,321.  

Here are more money-saving tips: 

  • Fly in August when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Great Falls  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Great Falls from Washington 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Great Falls with Expedia today.

Frequently asked questions

How much is a flight from Washington Dulles Intl. Airport (IAD) to GTF?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip journey between Washington Dulles Intl. Airport (IAD) and GTF was CA $801. Cheap fares don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to Great Falls Intl. Airport (GTF)?
Each air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to GTF that have flexible change policies?
Flights from Washington Dulles Intl. Airport (IAD) to GTF offering flexible change policies are available with many airlines. Simply use our "No change fees" filter when searching. You'll only need to pay the fare difference, with no added fees to worry about.
How many hours is the flight from Dulles Intl. Airport to Great Falls Intl. Airport?
You may like to bring your own on-board entertainment, as it takes roughly 6 hours and 35 minutes to jet to Great Falls Intl. Airport (GTF) from IAD. A good set of noise-cancelling earphones will also be useful.
How far is the flight from IAD to GTF?
Expect to be up above the clouds for a while, as the flight distance between Chantilly and Great Falls is 2,900 kilometres. Set up a playlist of your favourite podcasts before you leave home to stay entertained during your flight.
Which airlines fly direct from IAD to GTF?
Direct flights aren't available, so you'll need to make at least one stop between IAD and GTF. Make the most of the layover time to stretch your legs and take a break.
Are IAD to GTF flight tickets cheaper when they're purchased at the last minute?
Flight prices go up and down like a yo-yo, so there are no guarantees. While last-minute deals between IAD and GTF are possible, it also makes sense to keep track of prices well before you fly. In fact, some airlines release their prices up to 12 months before the departure date. Expedia is constantly updating the best airfare bargains around, so keep checking and be ready to pounce when prices drop.

Explore a world of travel with Expedia

Washington nearby Airports

Baltimore

Baltimore Washington Intl. Thurgood Marshall to Great Falls
CA $671.70

Washington

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