IAD - GTF

$402 Find Cheap Flights from Washington Dulles Airport to Great Falls

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Great Falls departing on 11/11. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Great Falls

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

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Great Falls 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 Dulles Intl to Great Falls

Tue, Nov 11 - Sat, Nov 15
Delta Logo
7:10 am - 12:32 pmIAD-GTF
7h 22m1 stop
Delta Logo
1:12 pm - 11:29 pmGTF-IAD
8h 17m1 stop
$402Delta
Find Deal
Fri, Oct 17 - Wed, Oct 29
Alaska Airlines Logo
6:25 am - 5:35 pmIAD-GTF
13h 10m1 stop
Alaska Airlines Logo
6:50 pm - 6:23 amGTF-IAD
9h 33m1 stop
$408Alaska Airlines
Find Deal
Fri, Oct 17 - Wed, Oct 29
Hawaiian Airlines Logo
8:53 am - 5:35 pmIAD-GTF
10h 42m1 stop
Hawaiian Airlines Logo
6:50 pm - 6:23 amGTF-IAD
9h 33m1 stop
$439Hawaiian Airlines
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Wed, Oct 15 - Sun, Oct 19
Alaska Airlines Logo
6:25 am - 5:35 pmIAD-GTF
13h 10m1 stop
Alaska Airlines Logo
6:15 pm - 12:23 amGTF-IAD
28h 08m1 stop
$452Alaska Airlines
Find Deal
Sat, Oct 11 - Fri, Oct 17
Alaska Airlines Logo
6:25 am - 5:35 pmIAD-GTF
13h 10m1 stop
Alaska Airlines Logo
6:15 pm - 12:23 amGTF-IAD
28h 08m1 stop
$467Alaska Airlines
Find Deal
Fri, Nov 7 - Sun, Nov 9
Delta Logo
7:35 am - 5:29 pmIAD-GTF
11h 54m2 stops
Delta Logo
6:10 pm - 9:10 amGTF-IAD
13h 00m2 stops
$495Delta
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Fri, Nov 7 - Sun, Nov 9
Delta Logo
7:35 am - 5:29 pmIAD-GTF
11h 54m2 stops
Delta Logo
6:10 pm - 9:10 amGTF-IAD
13h 00m2 stops
$505Delta
Find Deal
Fri, Nov 7 - Sun, Nov 9
Alaska Airlines Logo
7:43 am - 6:10 pmIAD-GTF
12h 27m1 stop
Alaska Airlines Logo
6:50 pm - 6:23 amGTF-IAD
9h 33m1 stop
$523Alaska Airlines
Find Deal
Fri, Oct 17 - Wed, Oct 29
United Airlines Logo
10:19 pm - 1:26 pmIAD-GTF
17h 07m2 stops
United Airlines Logo
2:30 pm - 11:15 pmGTF-IAD
6h 45m1 stop
$545United Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
United Airlines Logo
8:25 am - 10:32 pmIAD-GTF
16h 07m1 stop
United Airlines Logo
2:30 pm - 5:16 amGTF-IAD
12h 46m1 stop
$555United Airlines
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $402 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$402
Delta
Tue 11/11Sat 11/15
IAD - GTF • 1 stop
Cheapest one-way
Multiple Airlines
Wed 9/17
IAD - GTF • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
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Booking Insights

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

Get data-powered insights and trends into flights from Dulles Intl to Great Falls 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 Washington Dulles Airport to Great Falls?

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

When flying from Washington Dulles Airport to Great Falls, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Washington Dulles Airport, you’ll find the best rates on Tuesdays and the most expensive ones on Fridays.

Find deals

Good to know

Low seasonNovember
Cheapest flight$402
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Washington Dulles Airport to Great Falls

When to book flights from Dulles Intl to Great Falls

Are your dates flexible? Find out the best times to travel from Dulles Intl to Great Falls 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 Washington Dulles Airport to Great Falls flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Great Falls was $402 for a round-trip ticket.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Great Falls, with SkyTeam being the most commonly used for this route.

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

    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 Washington Dulles Airport to Great Falls.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Great Falls from Washington Dulles Airport 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 Washington Dulles Airport to Great Falls?

    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 Great Falls with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and GTF 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 Washington Dulles Airport to Great Falls?

    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 Great Falls from Washington Dulles Airport 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 Dulles Intl to Great Falls

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Great Falls. 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 Dulles Intl to Great Falls? 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 8924 reviews
7.3Comfort
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
Airline reviews

Great service on board. Boarding a bit slow due to process. Food was pretty average.

8.0 ExcellentTim, Aug 2025IAD - MUC
Read more United Airlines reviews

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

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

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Great Falls (GTF)

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