GTF - IAD

$176 Find Cheap Flights from Great Falls to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Great Falls to Dulles Intl departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Great Falls to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Great Falls to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$390
Delta
Wed 12/10Sat 12/13
GTF - IAD • 2 stops
Cheapest one-way
$176
Multiple Airlines
Mon 11/10
GTF - IAD • 3 stops
Top airlines
Delta
Cheapest • from $390 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Great Falls to Dulles Intl (GTF-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Great Falls to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Great Falls to Dulles Intl

Wed, Dec 10 - Sat, Dec 13
Delta Logo
6:10 pm - 11:27 pmGTF-IAD
27h 17m2 stops
Delta Logo
7:05 am - 12:31 pmIAD-GTF
7h 26m1 stop
$390Delta
Find Deal
Wed, Dec 10 - Sat, Dec 13
Delta Logo
6:10 pm - 11:27 pmGTF-IAD
27h 17m2 stops
Delta Logo
9:00 am - 5:28 pmIAD-GTF
10h 28m2 stops
$395Delta
Find Deal
Sat, Dec 6 - Sat, Dec 13
Delta Logo
6:10 pm - 11:27 pmGTF-IAD
27h 17m2 stops
Delta Logo
7:05 am - 12:31 pmIAD-GTF
7h 26m1 stop
$397Delta
Find Deal
Wed, Dec 10 - Sat, Dec 13
Delta Logo
6:10 pm - 11:27 pmGTF-IAD
27h 17m2 stops
Delta Logo
6:55 am - 5:28 pmIAD-GTF
12h 33m2 stops
$400Delta
Find Deal
Tue, Nov 11 - Sat, Nov 15
United Airlines Logo
2:30 pm - 11:15 pmGTF-IAD
6h 45m1 stop
United Airlines Logo
2:25 pm - 10:39 pmIAD-GTF
10h 14m1 stop
$538United Airlines
Find Deal
Fri, Dec 19 - Sun, Dec 28
United Airlines Logo
6:15 am - 4:39 pmGTF-IAD
8h 24m1 stop
United Airlines Logo
4:00 pm - 10:46 pmIAD-GTF
8h 46m1 stop
$566United Airlines
Find Deal
Fri, Dec 19 - Sun, Dec 28
United Airlines Logo
6:15 am - 9:15 pmGTF-IAD
13h 00m2 stops
United Airlines Logo
4:00 pm - 10:46 pmIAD-GTF
8h 46m1 stop
$617United Airlines
Find Deal
Fri, Dec 19 - Sun, Dec 28
United Airlines Logo
6:15 am - 9:15 pmGTF-IAD
13h 00m2 stops
United Airlines Logo
8:20 am - 10:46 pmIAD-GTF
16h 26m2 stops
$688United Airlines
Find Deal
Fri, Dec 26 - Fri, Jan 2
Alaska Airlines Logo
7:21 pm - 6:13 amGTF-IAD
8h 52m1 stop
Alaska Airlines Logo
6:43 pm - 6:41 pmIAD-GTF
25h 58m1 stop
$798Alaska Airlines
Find Deal
Fri, Dec 19 - Sun, Dec 28
Alaska Airlines Logo
7:21 pm - 6:13 amGTF-IAD
8h 52m1 stop
Alaska Airlines Logo
6:43 pm - 6:41 pmIAD-GTF
25h 58m1 stop
$893Alaska Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Great Falls to Dulles Intl flights

Get data-powered insights and trends into flights from Great Falls to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Great Falls to Washington Dulles Airport?

The average price of all round-trip flights from Great Falls to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Washington Dulles Airport on a Tuesday and more expensive on a Friday. On your return trip to Great Falls, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

Good to know

Low seasonOctober
Cheapest flight$176
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly with an average 31% increase in price.
Flight from Great Falls to Washington Dulles Airport

When to book flights from Great Falls to Dulles Intl

Are your dates flexible? Find out the best times to travel from Great Falls to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Great Falls to Washington Dulles Airport flights

  • What is the cheapest flight from Great Falls to Washington, D.C. Dulles Intl Airport?

    In the last 3 days, the lowest price for a flight from Great Falls to Washington, D.C. Dulles Intl Airport was $176 for a one-way ticket and $390 for a round-trip.

  • Do I need a passport to fly between Great Falls and Washington Dulles Airport?

    A passport is not required to fly from Great Falls to Washington Dulles Airport.

  • Which airports will I be using when flying from Great Falls to Washington Dulles Airport?

    When flying out of Great Falls you will be using Great Falls. You will be landing at Washington Dulles Airport, also known as Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from Great Falls to Washington Dulles Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Great Falls to Washington Dulles Airport?

    Star Alliance is the only airline alliance operating flights between Great Falls and Washington Dulles Airport.

  • How does KAYAK find such low prices on flights from Great Falls to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Great Falls to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Great Falls to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Great Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Great Falls to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Great Falls with another airline. Booking your flights between Great Falls and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Great Falls to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Great Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Great Falls to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Great Falls to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Great Falls to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8997 reviews
7.3Comfort
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
Airline reviews

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

6.0 GoodMr, Oct 2025CPT - IAD
Read more United Airlines reviews

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

Everything you need to know for your flight from Great Falls to Dulles Intl

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