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 8h 25m. Fly via Delta or United 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 $337.

In terms of precipitation, rainfall in Great Falls ranges from 0.5 - 2.5 inches per month. June is typically the wettest month, when rainfall can reach 2.5 in. January is typically the driest time to visit Great Falls when rainfall is around 0.5 in.

If weather is an important factor for your trip to Great Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

What is the cheapest time of day to fly from IAD to GTF?

When flying from Washington, D.C. Dulles Intl Airport to Great Falls, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Great Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Great Falls flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Great Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Great Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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.

$264+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Great Falls

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Cheap flight deals from Dulles Intl to Great Falls

Cheapest

Best

Last-minute

One-way

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 September 8, 2026.

Sun 11/16:13 am -

1 stop8h 25m

Sat 11/141:21 pm -

2 stops9h 20m

Deal found 9/3

$354

Tue 10/206:13 am -

1 stop8h 25m

Tue 10/271:18 pm -

1 stop8h 17m

Deal found 9/7

$368

Sat 10/242:43 pm -

1 stop8h 39m

Wed 10/282:45 pm -

1 stop6h 30m

Deal found 9/3

$448

Sat 10/247:02 am -

1 stop11h 33m

Wed 10/285:15 pm -

1 stop28h 44m

Deal found 9/5

$463

Sun 11/17:05 am -

1 stop11h 14m

Sat 11/144:59 pm -

1 stop10h 45m

Deal found 9/7

$468

Mon 10/196:13 am -

1 stop8h 25m

Mon 10/261:18 pm -

1 stop8h 17m

Deal found 9/7

$474

Fri 9/114:15 pm -

1 stop6h 57m

Mon 9/142:25 pm -

1 stop8h 07m

Deal found 9/3

$508

Tue 9/292:43 pm -

1 stop8h 39m

Wed 9/302:37 pm -

1 stop6h 48m

Deal found 9/6

$513

Best flights from Dulles Intl to Great Falls
Discover carefully curated flight deals from Dulles Intl to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.

Sun 11/16:13 am -

1 stop8h 25m

Sat 11/141:21 pm -

2 stops9h 20m

Deal found 9/6

$454

Tue 9/292:43 pm -

1 stop8h 39m

Wed 9/302:37 pm -

1 stop6h 48m

Deal found 9/6

$513

Sat 10/242:43 pm -

1 stop8h 39m

Wed 10/282:45 pm -

2 stops14h 35m

Deal found 9/3

$532

Tue 10/278:15 am -

2 stops15h 23m

Sat 10/312:45 pm -

1 stop6h 30m

Deal found 9/8

$539

Last-minute flights from Dulles Intl to Great Falls
Discover last-minute flight deals from Dulles Intl to Great Falls. Data last updated September 8, 2026 and is based on user searches.

Fri 9/114:15 pm -

1 stop6h 57m

Mon 9/142:25 pm -

1 stop8h 07m

Deal found 9/3

$508

Tue 9/292:43 pm -

1 stop8h 39m

Wed 9/302:37 pm -

1 stop6h 48m

Deal found 9/6

$513

Tue 9/2910:15 am -

2 stops14h 22m

Wed 9/301:15 pm -

1 stop8h 28m

Deal found 9/6

$528

Mon 10/196:13 am -

1 stop8h 25m

Mon 10/261:18 pm -

1 stop8h 17m

Deal found 9/7

$474

Tue 10/206:13 am -

1 stop8h 25m

Tue 10/271:18 pm -

1 stop8h 17m

Deal found 9/7

$368

Sat 10/242:43 pm -

1 stop8h 39m

Wed 10/282:45 pm -

1 stop6h 30m

Deal found 9/3

$448

Sat 10/247:02 am -

1 stop11h 33m

Wed 10/285:15 pm -

1 stop28h 44m

Deal found 9/5

$463

Sat 10/312:05 pm -

1 stop9h 33m

Wed 11/42:45 pm -

1 stop6h 30m

Deal found 9/7

$468

One-way flights from Dulles Intl to Great Falls
Search for one-way flight options from Dulles Intl to Great Falls. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.

Wed 12/27:00 am -

1 stop11h 13m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$264

Wed 12/210:54 pm -

2 stops37h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$318

Mon 9/216:30 am -

1 stop8h 59m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/5

$324

Mon 9/217:47 pm -

2 stops22h 52m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/5

$609

Mon 9/217:50 am -

3 stops34h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/5

$834

Find flight deals from Dulles Intl to Great Falls

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$354 (Delta)
One-way from	$264 (Priceline)

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Great Falls flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Great Falls flights.

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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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Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Wed 12/2

7:00 am-4:13 pm

1 stop11h 13m

Great Falls

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$264

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Wed 12/2

10:54 pm-10:49 am

2 stops37h 55m

Great Falls

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$318

Quickest round-trip

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Mon 9/21

6:30 am-1:29 pm

1 stop8h 59m

Great Falls

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$324

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Sun 11/1

6:13 am-12:38 pm

1 stop8h 25m

Great Falls

Sat 11/14

1:21 pm-12:41 am

2 stops9h 20m

$454

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Tue 9/29

2:43 pm-9:22 pm

1 stop8h 39m

Great Falls

Wed 9/30

2:37 pm-11:25 pm

1 stop6h 48m

$513

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Sat 10/24

2:43 pm-9:22 pm

1 stop8h 39m

Great Falls

Wed 10/28

2:45 pm-7:20 am

2 stops14h 35m

$532

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Tue 10/27

8:15 am-9:38 pm

2 stops15h 23m

Great Falls

Sat 10/31

2:45 pm-11:15 pm

1 stop6h 30m

$539

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Mon 9/21

7:47 pm-4:39 pm

2 stops22h 52m

Great Falls

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$609

Washington, D.C.Great Falls

IAD Washington, D.C. Dulles Intl - GTF Great Falls

IADGTF

Washington, D.C. Dulles Intl

Mon 9/21

7:50 am-4:39 pm

3 stops34h 49m

Great Falls

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$834

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/7

Sorted by cheapest first

Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Great Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Great Falls flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Great Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Great Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

IAD-GTF

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

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

10,185 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

United Airlines

7.4

Good

10,185 reviews

United Airlines

7.4

Good

10,185 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Related info for your journey

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 8h 25m. Fly via Delta or United 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 $337.
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.

See more FAQs

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Top airline flying from Dulles Intl to Great Falls

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$337	Average$476	FlexibilityNo cancel fee	On-time69%

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$264+ Cheap flights from Dulles Intl (IAD) to Great Falls (GTF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/2. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Dulles Intl to Great Falls

Cheapest flights from Dulles Intl to Great FallsExplore 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 September 8, 2026.

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 September 8, 2026.

Best flights from Dulles Intl to Great FallsDiscover carefully curated flight deals from Dulles Intl to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.

Discover carefully curated flight deals from Dulles Intl to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.

Last-minute flights from Dulles Intl to Great FallsDiscover last-minute flight deals from Dulles Intl to Great Falls. Data last updated September 8, 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Great Falls. Data last updated September 8, 2026 and is based on user searches.

One-way flights from Dulles Intl to Great FallsSearch for one-way flight options from Dulles Intl to Great Falls. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.

Search for one-way flight options from Dulles Intl to Great Falls. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.

Find flight deals from Dulles Intl to Great Falls

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Great Falls that are best for you.

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.

Reviews of airlines servicing Great Falls

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.

Related info for your journey

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

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

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

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

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

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

Traveling to a place near Great Falls?

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Alternative routes for Dulles Intl to Great Falls

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Great Falls by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Dulles Intl to Great Falls by cabin class

Find flights from Dulles Intl to Great Falls, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Great Falls

Explore flights to Great Falls departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.

Dulles Intl and Great Falls flights

Browse other Dulles Intl and Great Falls flight options. Last updated on September 8, 2026.

Other flights from Dulles Intl

Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.

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Top airline flying from Dulles Intl to Great Falls

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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 September 8, 2026.

Best flights from Dulles Intl to Great Falls
Discover carefully curated flight deals from Dulles Intl to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.

Last-minute flights from Dulles Intl to Great Falls
Discover last-minute flight deals from Dulles Intl to Great Falls. Data last updated September 8, 2026 and is based on user searches.

One-way flights from Dulles Intl to Great Falls
Search for one-way flight options from Dulles Intl to Great Falls. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.