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Dulles Intl

$211+ Cheap flights from Great Falls (GTF) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — IAD
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Great Falls to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$416
(Delta)

One-way from

$211
(Kiwi.com)

Popular in

April

Cheapest in

November

Average price

$522
From Great Falls to Washington, D.C. Dulles Intl
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One-way flight from Great Falls to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 31% potential increase in price ($283 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Great Falls to Dulles Intl

Cheapest flights from Great Falls to Dulles Intl
Explore the most affordable flight options available from Great Falls to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:08 pmGTF - IAD
1 stop8h 25mDelta
Wed 10/296:15 amIAD - GTF
1 stop8h 13mDelta
Deal found 8/13$416
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:08 pmGTF - IAD
1 stop8h 25mDelta
Fri 10/316:15 amIAD - GTF
1 stop8h 13mDelta
Deal found 8/13$434
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:08 pmGTF - IAD
1 stop8h 25mDelta
Thu 10/307:05 amIAD - GTF
2 stops12h 24mDelta
Deal found 8/13$444
This Alaska Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/114:29 pmGTF - IAD
1 stop13h 04mAlaska Airlines
Mon 9/157:00 amIAD - GTF
1 stop10h 49mAlaska Airlines
Deal found 8/12$478
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/111:05 pmGTF - IAD
2 stops14h 56mDelta
Mon 9/157:05 amIAD - GTF
1 stop7h 20mDelta
Deal found 8/11$485
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/277:00 amGTF - IAD
1 stop6h 34mUnited Airlines
Sun 8/313:48 pmIAD - GTF
1 stop7h 40mUnited Airlines
Deal found 8/12$514
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:11 pmGTF - IAD
2 stops12h 58mDelta
Mon 9/227:20 amIAD - GTF
2 stops12h 07mDelta
Deal found 8/12$533
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:00 amGTF - IAD
1 stop5h 25mDelta
Sun 8/319:00 amIAD - GTF
2 stops13h 34mDelta
Deal found 8/12$563
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/222:31 pmGTF - IAD
2 stops15h 01mUnited Airlines
Fri 10/318:25 amIAD - GTF
1 stop16h 07mUnited Airlines
Deal found 8/13$578

Cheapflights Fare Finder

 
Customize your flight search to find flights from Great Falls to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Great Falls to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Great Falls

Fly to

Dulles Intl

Route

Depart

Return

Price

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 10/22

1:08 pm-11:33 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

Wed 10/29

6:15 am-12:28 pm

1 stop8h 13m

$416

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 10/22

1:08 pm-11:33 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

Thu 10/30

6:15 am-12:28 pm

1 stop8h 13m

$434

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 10/22

1:08 pm-11:33 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

Fri 10/31

6:15 am-12:28 pm

1 stop8h 13m

$434

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Thu 9/11

4:29 pm-7:33 am

1 stop13h 04m

Washington, D.C. Dulles Intl

Mon 9/15

7:00 am-3:49 pm

1 stop10h 49m

$478

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Thu 9/11

1:05 pm-6:01 am

2 stops14h 56m

Washington, D.C. Dulles Intl

Mon 9/15

7:05 am-12:25 pm

1 stop7h 20m

$485

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 8/27

7:00 am-3:34 pm

1 stop6h 34m

Washington, D.C. Dulles Intl

Sun 8/31

3:48 pm-9:28 pm

1 stop7h 40m

$514

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Fri 8/29

6:00 am-1:25 pm

1 stop5h 25m

Washington, D.C. Dulles Intl

Mon 9/1

2:15 pm-8:34 pm

1 stop8h 19m

$514

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 9/15

6:11 pm-9:09 am

2 stops12h 58m

Washington, D.C. Dulles Intl

Mon 9/22

7:20 am-5:27 pm

2 stops12h 07m

$533

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 8/25

12:11 pm-9:39 pm

2 stops31h 28m

$211

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 8/25

2:35 pm-11:17 pm

1 stop6h 42m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 12 results
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Best time to book a flight from Great Falls to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Great Falls with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated August 14, 2025.
Read reviews from past customers who have flown United Airlines from Great Falls to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Great Falls to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Great Falls to Washington, D.C. Dulles Intl?

    For a flight from Great Falls to Washington, D.C. Dulles Intl, you will be flying from Great Falls. Great Falls (GTF) is just 3.5 mi from the center of the city. Great Falls is the only Great Falls airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 1 airline has flights to Washington, D.C. Dulles Intl from Great Falls on a regular basis.

  • What is the cheapest airline to fly from Great Falls to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on United Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $424. United Airlines is priced at 32% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Great Falls to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Great Falls to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to Dulles Intl.

  • Can I find deals for business class flights from Great Falls to Dulles Intl?

    Yes. Cheapflights offers flight deals from Great Falls to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, July is the cheapest month in which you can book a flight from Great Falls to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Great Falls to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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Top airline flying from Great Falls to Dulles Intl

Discover the top airline that operate flights from Great Falls to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$424Average$469FlexibilityNo cancel feeOn-time69%

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