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Cheap flights from Great Falls to Washington, D.C. from $236

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Washington, D.C. departing on 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:35 pm - 11:34 pm
GTF
-
IAD
6h 59m
1 stop
United Airlines Logo
2:37 pm - 9:18 pm
IAD
-
GTF
8h 41m
1 stop
$323United Airlines
Sat, May 2 - Wed, May 6
United Airlines Logo
2:35 pm - 11:34 pm
GTF
-
IAD
6h 59m
1 stop
United Airlines Logo
10:08 pm - 9:18 pm
IAD
-
GTF
25h 10m
2 stops
$408United Airlines
Sat, May 2 - Wed, May 6
United Airlines Logo
2:29 pm - 11:22 pm
GTF
-
IAD
6h 53m
1 stop
United Airlines Logo
2:24 pm - 9:53 pm
IAD
-
GTF
9h 29m
1 stop
$428United Airlines
Sat, Feb 7 - Wed, Feb 11
United Airlines Logo
2:30 pm - 11:34 pm
GTF
-
IAD
7h 04m
1 stop
United Airlines Logo
2:21 pm - 9:17 pm
IAD
-
GTF
8h 56m
1 stop
$439United Airlines
Wed, Apr 1 - Wed, Apr 8
United Airlines Logo
2:29 pm - 11:22 pm
GTF
-
IAD
6h 53m
1 stop
United Airlines Logo
8:30 am - 9:53 pm
IAD
-
GTF
15h 23m
2 stops
$453United Airlines
Sat, Feb 7 - Wed, Feb 11
United Airlines Logo
2:29 pm - 11:22 pm
GTF
-
IAD
6h 53m
1 stop
United Airlines Logo
2:24 pm - 9:53 pm
IAD
-
GTF
9h 29m
1 stop
$475United Airlines
Thu, Feb 5 - Mon, Feb 9
United Airlines Logo
6:15 am - 5:32 pm
GTF
-
IAD
9h 17m
1 stop
United Airlines Logo
10:15 pm - 9:18 pm
IAD
-
GTF
25h 03m
3 stops
$477United Airlines
Sat, May 2 - Wed, May 6
United Airlines Logo
2:35 pm - 11:34 pm
GTF
-
IAD
6h 59m
1 stop
United Airlines Logo
10:15 pm - 9:18 pm
IAD
-
GTF
25h 03m
3 stops
$487United Airlines
Sat, May 2 - Wed, May 6
Delta Logo
1:12 pm - 11:48 pm
GTF
-
IAD
8h 36m
1 stop
Delta Logo
12:32 pm - 10:30 pm
IAD
-
GTF
11h 58m
2 stops
$552Delta
Thu, Feb 5 - Mon, Feb 9
Delta Logo
6:15 pm - 9:13 am
GTF
-
IAD
12h 58m
2 stops
Delta Logo
12:32 pm - 10:30 pm
IAD
-
GTF
11h 58m
2 stops
$557Delta
Thu, Feb 5 - Mon, Feb 9

United Airlines flights from Great Falls to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Great Falls to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
May 2
GTF6:15 amGreat Falls
9h 17m
1 stop
IAD5:32 pmWashington, D.C. Dulles Intl
May 6
IAD2:37 pmWashington, D.C. Dulles Intl
8h 41m
1 stop
GTF9:18 pmGreat Falls
$323
United Airlines
May 2
GTF2:35 pmGreat Falls
6h 59m
1 stop
IAD11:34 pmWashington, D.C. Dulles Intl
May 6
IAD10:08 pmWashington, D.C. Dulles Intl
25h 10m
2 stops
GTF9:18 pmGreat Falls
$408
United Airlines
Feb 7
GTF2:29 pmGreat Falls
6h 53m
1 stop
IAD11:22 pmWashington, D.C. Dulles Intl
Feb 11
IAD2:24 pmWashington, D.C. Dulles Intl
9h 29m
1 stop
GTF9:53 pmGreat Falls
$428

Delta flights from Great Falls to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Great Falls to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Feb 5
GTF1:12 pmGreat Falls
8h 36m
1 stop
IAD11:48 pmWashington, D.C. Dulles Intl
Feb 9
IAD12:32 pmWashington, D.C. Dulles Intl
11h 58m
2 stops
GTF10:30 pmGreat Falls
$552
Delta
Feb 5
GTF6:15 pmGreat Falls
12h 58m
2 stops
IAD9:13 amWashington, D.C. Dulles Intl
Feb 9
IAD12:32 pmWashington, D.C. Dulles Intl
11h 58m
2 stops
GTF10:30 pmGreat Falls
$557
Delta
Jun 11
GTF6:20 pmGreat Falls
13h 42m
2 stops
IAD10:02 amWashington, D.C. Dulles Intl
Jun 14
IAD7:15 amWashington, D.C. Dulles Intl
7h 08m
1 stop
GTF12:23 pmGreat Falls
$674

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated January 21, 2026.
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

Fly to

Route

Depart

Return

Price

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Sat 5/2

2:35 pm-11:34 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Wed 5/6

2:37 pm-9:18 pm

1 stop8h 41m

$323

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Sat 5/2

2:35 pm-11:34 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Wed 5/6

10:08 pm-9:18 pm

2 stops25h 10m

$408

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Sat 2/7

2:29 pm-11:22 pm

1 stop6h 53m

Washington, D.C. Dulles Intl

Wed 2/11

2:24 pm-9:53 pm

1 stop9h 29m

$428

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 4/1

2:30 pm-11:34 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Wed 4/8

2:21 pm-9:17 pm

1 stop8h 56m

$439

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Sat 2/7

2:29 pm-11:22 pm

1 stop6h 53m

Washington, D.C. Dulles Intl

Wed 2/11

8:30 am-9:53 pm

2 stops15h 23m

$453

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Thu 2/5

2:29 pm-11:22 pm

1 stop6h 53m

Washington, D.C. Dulles Intl

Mon 2/9

2:24 pm-9:53 pm

1 stop9h 29m

$475

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Sat 5/2

6:15 am-5:32 pm

1 stop9h 17m

Washington, D.C. Dulles Intl

Wed 5/6

10:15 pm-9:18 pm

3 stops25h 03m

$477

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Sat 5/2

2:35 pm-11:34 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Wed 5/6

10:15 pm-9:18 pm

3 stops25h 03m

$487

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Thu 2/5

1:12 pm-11:48 pm

1 stop8h 36m

Washington, D.C. Dulles Intl

Mon 2/9

12:32 pm-10:30 pm

2 stops11h 58m

$552

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Thu 2/5

6:15 pm-9:13 am

2 stops12h 58m

Washington, D.C. Dulles Intl

Mon 2/9

12:32 pm-10:30 pm

2 stops11h 58m

$557

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Great Falls to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Great Falls to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 9% on your flight if you consider stops on a Great Falls to Washington, D.C. Dulles Intl Airport flight.

When to book flights from Great Falls to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Great Falls to Washington, D.C. Dulles Intl Airport (GTF to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to Washington, D.C. Dulles Intl Airport

Fastest flight time

6h 53m

Direct flights

None
The fastest flight from Great Falls to Washington, D.C. Dulles Intl Airport takes 6h 53m
There are no direct flights from Great Falls to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Great Falls to Washington, D.C. Dulles Intl Airport.
Search flight deals

  • How far is Great Falls to Washington, D.C. Dulles Intl by plane?

    The straight-line distance from Great Falls to Washington, D.C. Dulles Intl is 1785.9 mi. A reasonable flight in good conditions will take 6h 53m.

  • When did momondo last update prices for flights from Great Falls Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Great Falls Airport to Washington, D.C. Dulles Intl Airport were last updated today.

  • How many operators does momondo search for flights from Great Falls Airport to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Great Falls Airport to Washington, D.C. Dulles Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Great Falls Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Great Falls to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Great Falls to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Great Falls to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $420Free CancellationRating
7.4
9,188 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Rockville
Gaithersburg
Manassas
Harpers Ferry
Sterling
Springfield
Fairfax

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Great Falls.

Can I find flights from Great Falls to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Great Falls with this policy.

How can momondo help me find flights from Great Falls to Washington, D.C.?

Once you have performed a search for Great Falls to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Great Falls to Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. from Great Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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