IAD - GTF

$209 Find Cheap Flights from Washington Dulles Airport to Great Falls

This is the cheapest one-way 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 8/12. 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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Flights 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

Sat, Sep 6 - Sat, Sep 13
Alaska Airlines Logo
6:09 pm - 3:49 pmIAD-GTF
23h 40m1 stop
Alaska Airlines Logo
4:29 pm - 7:32 amGTF-IAD
13h 03m1 stop
$380Alaska Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
Delta Logo
2:15 pm - 8:34 pmIAD-GTF
8h 19m1 stop
Delta Logo
6:20 pm - 9:11 amGTF-IAD
12h 51m2 stops
$386Delta
Find Deal
Sat, Sep 6 - Sat, Sep 13
Delta Logo
1:00 pm - 10:45 pmIAD-GTF
11h 45m2 stops
Delta Logo
6:20 pm - 9:11 amGTF-IAD
12h 51m2 stops
$391Delta
Find Deal
Fri, Sep 5 - Tue, Sep 9
Alaska Airlines Logo
7:00 am - 3:49 pmIAD-GTF
10h 49m1 stop
Alaska Airlines Logo
4:29 pm - 7:32 amGTF-IAD
13h 03m1 stop
$416Alaska Airlines
Find Deal
Fri, Sep 5 - Tue, Sep 9
Delta Logo
2:15 pm - 8:34 pmIAD-GTF
8h 19m1 stop
Delta Logo
5:45 am - 6:49 pmGTF-IAD
11h 04m2 stops
$422Delta
Find Deal
Fri, Sep 5 - Mon, Sep 8
Alaska Airlines Logo
7:00 am - 3:49 pmIAD-GTF
10h 49m1 stop
Alaska Airlines Logo
4:29 pm - 7:32 amGTF-IAD
13h 03m1 stop
$452Alaska Airlines
Find Deal
Tue, Jul 15 - Tue, Jul 22
Delta Logo
1:00 pm - 10:45 pmIAD-GTF
11h 45m2 stops
Delta Logo
6:19 pm - 8:59 amGTF-IAD
12h 40m2 stops
$453Delta
Find Deal
Sat, Sep 6 - Sat, Sep 13
United Airlines Logo
8:15 am - 1:37 pmIAD-GTF
7h 22m1 stop
United Airlines Logo
7:00 am - 3:34 pmGTF-IAD
6h 34m1 stop
$470United Airlines
Find Deal
Fri, Aug 29 - Sat, Sep 6
United Airlines Logo
10:14 pm - 1:37 pmIAD-GTF
17h 23m1 stop
United Airlines Logo
2:35 pm - 11:17 pmGTF-IAD
6h 42m1 stop
$504United Airlines
Find Deal
Tue, Jul 15 - Tue, Jul 22
 Logo
6:35 am - 9:13 pmIAD-GTF
16h 38m3 stops
 Logo
4:55 pm - 6:50 amGTF-IAD
11h 55m2 stops
$1,114
Find Deal
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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.

Good to know

Low seasonMarch
High seasonSeptember
Cheapest flight$209
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 29% lower on average.
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 $209 for a one-way ticket and $380 for a round-trip.

  • 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?

    Star Alliance, SkyTeam, and oneworld 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 8809 reviews
7.7Boarding
6.6Food
7.3Comfort
7.0Entertainment
8.1Crew
Airline reviews

Gate agent did not hold flight for connection, provided no assistance to get new flight

2.0 MediocreJack, Jun 2025SAT - IAH
Read more United Airlines reviews

Gate agent did not hold flight for connection, provided no assistance to get new flight

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

United airlines, mediocre at best. No issues , nothing great . Worked for me

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.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Liked nothing. As per previous segment it was delay delay delay.

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

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