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$134+ Cheap flights from Dulles Intl (IAD) to Great Falls (GTF)

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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — GTF
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Dulles Intl to Great Falls

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Great Falls (GTF). 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 septiembre 11, 2025.

Round-trip from

$422
(Alaska Airlines)

One-way from

$134
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$510
From Washington, D.C. Dulles Intl to Great Falls
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One-way flight from Washington, D.C. Dulles Intl to Great Falls
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Highest demand for flights based on searches. 24% potential increase in price ($209 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dulles Intl to Great Falls

Cheapest flights from Dulles Intl to Great Falls
Explore the most affordable flight options available from Dulles Intl to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/176:25 amIAD - GTF
1 stop13h 10mAlaska Airlines
mié. 10/296:50 pmGTF - IAD
1 stop9h 33mAlaska Airlines
Deal found 9/11$422
This Delta deal was found by Cheapflights users on 9/10. 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.
mar. 11/117:15 amIAD - GTF
2 stops12h 15mDelta
sáb. 11/151:12 pmGTF - IAD
1 stop8h 17mDelta
Deal found 9/10$460
This Hawaiian Airlines deal was found by Cheapflights users on 9/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/178:53 amIAD - GTF
1 stop10h 42mHawaiian Airlines
mié. 10/296:50 pmGTF - IAD
1 stop9h 33mHawaiian Airlines
Deal found 9/10$465
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
mié. 10/158:53 amIAD - GTF
1 stop10h 42mAlaska Airlines
dom. 10/196:15 pmGTF - IAD
1 stop11h 18mAlaska Airlines
Deal found 9/10$470
This Delta deal was found by Cheapflights users on 9/9. 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.
vie. 11/77:35 amIAD - GTF
2 stops11h 54mDelta
dom. 11/96:10 pmGTF - IAD
2 stops13h 00mDelta
Deal found 9/9$495
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
dom. 10/56:25 amIAD - GTF
1 stop13h 10mAlaska Airlines
lun. 10/136:15 pmGTF - IAD
1 stop28h 08mAlaska Airlines
Deal found 9/10$498
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/117:35 amIAD - GTF
1 stop13h 20mAlaska Airlines
sáb. 12/207:21 pmGTF - IAD
1 stop8h 52mAlaska Airlines
Deal found 9/11$507
This United Airlines deal was found by Cheapflights users on 9/8. 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.
mié. 10/12:45 pmIAD - GTF
1 stop8h 26mUnited Airlines
sáb. 10/112:31 pmGTF - IAD
1 stop6h 51mUnited Airlines
Deal found 9/8$510
This United Airlines deal was found by Cheapflights users on 9/9. 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.
vie. 11/710:10 pmIAD - GTF
1 stop17h 23mUnited Airlines
dom. 11/92:30 pmGTF - IAD
1 stop12h 46mUnited Airlines
Deal found 9/9$519

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Great Falls 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Great Falls that are best for you.

Fly from

Dulles Intl

Fly to

Great Falls

Route

Depart

Return

Price

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

vie. 10/17

6:25 am-5:35 pm

1 stop13h 10m

Great Falls

mié. 10/29

6:50 pm-6:23 am

1 stop9h 33m

$422

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

mar. 11/11

7:15 am-5:30 pm

2 stops12h 15m

Great Falls

sáb. 11/15

1:12 pm-11:29 pm

1 stop8h 17m

$460

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

vie. 10/17

8:53 am-5:35 pm

1 stop10h 42m

Great Falls

mié. 10/29

6:50 pm-6:23 am

1 stop9h 33m

$465

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

mié. 10/15

8:53 am-5:35 pm

1 stop10h 42m

Great Falls

dom. 10/19

6:15 pm-7:33 am

1 stop11h 18m

$470

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

dom. 10/5

6:25 am-5:35 pm

1 stop13h 10m

Great Falls

lun. 10/13

6:15 pm-12:23 am

1 stop28h 08m

$498

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

mié. 10/1

2:45 pm-9:11 pm

1 stop8h 26m

Great Falls

sáb. 10/11

2:31 pm-11:22 pm

1 stop6h 51m

$510

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

vie. 11/7

7:35 am-5:29 pm

2 stops11h 54m

Great Falls

dom. 11/9

1:12 pm-11:29 pm

1 stop8h 17m

$521

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

vie. 10/10

7:41 pm-5:35 pm

1 stop23h 54m

Great Falls

lun. 10/13

6:15 pm-12:23 am

1 stop28h 08m

$522

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

vie. 9/26

6:00 am-12:25 pm

2 stops8h 25m

Great Falls

lun. 9/29

1:05 pm-6:01 am

2 stops14h 56m

$531

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

jue. 11/20

7:25 am-10:06 am

1 stop28h 41m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 20 results
1
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Best time to book a flight from Dulles Intl to Great Falls

Have a flexible travel schedule? Discover the best time to fly to Great Falls from Dulles Intl 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 Great Falls

Get insights into the airlines that provide service to Great Falls. 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 Great Falls. Reviews last updated septiembre 11, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Great Falls, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

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
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

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 Dulles Intl to Great Falls. 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 into for flights to Great Falls from Washington, D.C. Dulles Intl?

    Great Falls (GTF), located 3.5 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Great Falls. 1 airline have flights to Great Falls from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Great Falls should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

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

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Great Falls in 10h 42m. Fly via Alaska Airlines, Delta, or Hawaiian Airlines to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and Great Falls is about 1789 mi. This flight may include one or multiple stops.

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

    Flying on United Airlines is currently your cheapest option to Great Falls, with prices starting at $384. United Airlines is currently priced 41% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Great Falls 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 Washington, D.C. Dulles Intl Airport to Great Falls?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Great Falls (average of $367). Flying from Washington, D.C. Dulles Intl Airport to Great Falls in July is currently the most expensive (average of $574). 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.

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Alternative routes for Dulles Intl to Great Falls

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Top airline flying from Dulles Intl to Great Falls

Discover the top airline that operate flights from Dulles Intl to Great Falls. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$384Average$599FlexibilityNo cancel feeOn-time69%

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