GTF - IAD

$203 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 4/21. 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
$334
Alaska Airlines
Tue 2/3Tue 2/10
GTF - IAD • 1 stop
Cheapest one-way
$203
Delta
Tue 4/21
GTF - IAD • 2 stops
Top airlines
Alaska Airlines
Cheapest • from $334 (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

Tue, Feb 3 - Tue, Feb 10
Alaska Airlines Logo
5:59 pm - 4:26 pm
GTF
-
IAD
20h 27m
1 stop
Alaska Airlines Logo
6:04 pm - 5:19 pm
IAD
-
GTF
25h 15m
1 stop
$334Alaska Airlines
Sat, Feb 14 - Wed, Feb 18
Alaska Airlines Logo
6:28 pm - 5:20 pm
GTF
-
IAD
20h 52m
1 stop
Alaska Airlines Logo
7:05 am - 5:48 pm
IAD
-
GTF
12h 43m
1 stop
$344Alaska Airlines
Wed, Jan 28 - Sat, Jan 31
Delta Logo
1:12 pm - 11:48 pm
GTF
-
IAD
8h 36m
1 stop
Delta Logo
7:05 am - 12:32 pm
IAD
-
GTF
7h 27m
1 stop
$348Delta
Wed, Jan 28 - Sat, Jan 31
Delta Logo
1:12 pm - 12:24 am
GTF
-
IAD
9h 12m
2 stops
Delta Logo
7:05 am - 12:32 pm
IAD
-
GTF
7h 27m
1 stop
$354Delta
Wed, Apr 1 - Tue, Apr 7
United Airlines Logo
2:30 pm - 11:34 pm
GTF
-
IAD
7h 04m
1 stop
United Airlines Logo
2:21 pm - 9:17 pm
IAD
-
GTF
8h 56m
1 stop
$382United Airlines
Tue, Feb 3 - Tue, Feb 10
Delta Logo
6:15 pm - 9:13 am
GTF
-
IAD
12h 58m
2 stops
Delta Logo
7:05 am - 12:32 pm
IAD
-
GTF
7h 27m
1 stop
$408Delta
Thu, Jan 29 - Mon, Feb 2
Delta Logo
6:10 pm - 9:13 am
GTF
-
IAD
13h 03m
2 stops
Delta Logo
7:05 am - 12:32 pm
IAD
-
GTF
7h 27m
1 stop
$414Delta
Wed, May 27 - Sat, May 30
Delta Logo
6:20 pm - 9:10 am
GTF
-
IAD
12h 50m
2 stops
Delta Logo
7:15 am - 12:23 pm
IAD
-
GTF
7h 08m
1 stop
$417Delta
Thu, Jan 29 - Mon, Feb 2
Delta Logo
6:10 pm - 9:13 am
GTF
-
IAD
13h 03m
2 stops
Delta Logo
12:32 pm - 10:30 pm
IAD
-
GTF
11h 58m
2 stops
$419Delta
Sat, Feb 7 - Wed, Feb 11
United Airlines Logo
2:29 pm - 11:22 pm
GTF
-
IAD
6h 53m
1 stop
United Airlines Logo
2:24 pm - 9:53 pm
IAD
-
GTF
9h 29m
1 stop
$425United Airlines
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.

Which airlines provide the cheapest flights from Great Falls to Washington Dulles Airport?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Great Falls to Washington Dulles Airport were found on Alaska Airlines ($334) and Delta ($354).

Which airlines fly non-stop between Great Falls and Washington, D.C. Dulles Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Great Falls to Washington, D.C. Dulles Intl Airport.

There is just one airline that flies from Great Falls to Washington, D.C. Dulles Intl Airport direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is $420.

Find deals

Good to know

Cheapest flight$203
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 $203 for a one-way ticket and $334 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 9156 reviews
7.1Entertainment
7.7Boarding
8.1Crew
7.3Comfort
6.6Food
Airline reviews

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

8.0 ExcellentDavid, Jan 2026
GVA - IAD
Read more United Airlines reviews

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

l really enjoy very much the flight was very pleasant

The flight was delayed for 1:30 hours for maintenance issues. They should give more information about connecting flights. For a Business Cabin the Crew was mediocre.

The food is terrible. The same pasta or chicken with bad taste and presentation

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Great crew, excellent landing, good food. Over all great experience. Thank you!

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

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

Information on your arrival and departure airports

Great Falls (GTF)
Dulles Intl (IAD)