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Cheap flights from Great Falls to Washington, D.C. from $163

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 5/16. 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
2:30 pm - 11:34 pm
GTF
-
IAD
7h 04m
1 stop
United Airlines Logo
4:00 pm - 9:17 pm
IAD
-
GTF
7h 17m
1 stop
$367United Airlines
Wed, Apr 15 - Tue, Apr 21
Delta Logo
6:20 pm - 9:15 am
GTF
-
IAD
12h 55m
2 stops
Delta Logo
7:06 am - 5:40 pm
IAD
-
GTF
12h 34m
2 stops
$394Delta
Mon, Apr 13 - Thu, Apr 16
United Airlines Logo
2:30 pm - 11:34 pm
GTF
-
IAD
7h 04m
1 stop
United Airlines Logo
4:00 pm - 9:17 pm
IAD
-
GTF
7h 17m
1 stop
$408United Airlines
Wed, Apr 15 - Sat, Apr 18
Delta Logo
1:09 pm - 11:44 pm
GTF
-
IAD
8h 35m
1 stop
Delta Logo
1:00 pm - 10:29 pm
IAD
-
GTF
11h 29m
2 stops
$414Delta
Wed, Apr 15 - Sat, Apr 18
Delta Logo
6:20 pm - 9:15 am
GTF
-
IAD
12h 55m
2 stops
Delta Logo
6:00 am - 5:40 pm
IAD
-
GTF
13h 40m
2 stops
$419Delta
Mon, Apr 13 - Thu, Apr 16
Delta Logo
1:09 pm - 11:44 pm
GTF
-
IAD
8h 35m
1 stop
Delta Logo
10:11 am - 10:29 pm
IAD
-
GTF
14h 18m
2 stops
$444Delta
Wed, Apr 15 - Mon, Apr 20
United Airlines Logo
2:35 pm - 11:34 pm
GTF
-
IAD
6h 59m
1 stop
United Airlines Logo
3:56 pm - 9:34 pm
IAD
-
GTF
7h 38m
1 stop
$446United Airlines
Tue, May 19 - Sat, May 23
Delta Logo
6:20 pm - 9:15 am
GTF
-
IAD
12h 55m
2 stops
Delta Logo
6:00 am - 5:40 pm
IAD
-
GTF
13h 40m
2 stops
$449Delta
Mon, Apr 13 - Thu, Apr 16
United Airlines Logo
2:30 pm - 11:34 pm
GTF
-
IAD
7h 04m
1 stop
United Airlines Logo
4:00 pm - 9:17 pm
IAD
-
GTF
7h 17m
1 stop
$453United Airlines
Wed, Apr 15 - Mon, Apr 20
Alaska Airlines Logo
6:15 pm - 5:50 am
GTF
-
IAD
9h 35m
1 stop
Alaska Airlines Logo
9:00 am - 5:35 pm
IAD
-
GTF
10h 35m
1 stop
$459Alaska Airlines
Mon, Apr 27 - Wed, Apr 29

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

Our best Alaska Airlines deals on Great Falls to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Apr 27
GTF6:15 pmGreat Falls
9h 35m
1 stop
IAD5:50 amWashington, D.C. Dulles Intl
Apr 29
IAD9:00 amWashington, D.C. Dulles Intl
10h 35m
1 stop
GTF5:35 pmGreat Falls
$459
Alaska Airlines
Apr 25
GTF6:15 pmGreat Falls
27h 54m
1 stop
IAD12:09 amWashington, D.C. Dulles Intl
Apr 29
IAD7:20 pmWashington, D.C. Dulles Intl
24h 15m
1 stop
GTF5:35 pmGreat Falls
$492
Alaska Airlines
May 8
GTF6:15 pmGreat Falls
9h 35m
1 stop
IAD5:50 amWashington, D.C. Dulles Intl
May 11
IAD9:00 amWashington, D.C. Dulles Intl
10h 35m
1 stop
GTF5:35 pmGreat Falls
$509

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
Apr 13
GTF6:20 pmGreat Falls
12h 55m
2 stops
IAD9:15 amWashington, D.C. Dulles Intl
Apr 16
IAD7:06 amWashington, D.C. Dulles Intl
12h 34m
2 stops
GTF5:40 pmGreat Falls
$394
Delta
Apr 15
GTF1:09 pmGreat Falls
8h 35m
1 stop
IAD11:44 pmWashington, D.C. Dulles Intl
Apr 18
IAD1:00 pmWashington, D.C. Dulles Intl
11h 29m
2 stops
GTF10:29 pmGreat Falls
$414
Delta
Apr 13
GTF6:20 pmGreat Falls
12h 55m
2 stops
IAD9:15 amWashington, D.C. Dulles Intl
Apr 16
IAD6:00 amWashington, D.C. Dulles Intl
13h 40m
2 stops
GTF5:40 pmGreat Falls
$419

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 March 30, 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

Cheapest round-trip
Quickest round-trip

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 4/15

2:30 pm-11:34 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Tue 4/21

4:00 pm-9:17 pm

1 stop7h 17m

$367

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 4/13

6:20 pm-9:15 am

2 stops12h 55m

Washington, D.C. Dulles Intl

Thu 4/16

7:06 am-5:40 pm

2 stops12h 34m

$394

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 4/15

2:30 pm-11:34 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Sat 4/18

4:00 pm-9:17 pm

1 stop7h 17m

$408

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 4/15

1:09 pm-11:44 pm

1 stop8h 35m

Washington, D.C. Dulles Intl

Sat 4/18

1:00 pm-10:29 pm

2 stops11h 29m

$414

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 4/13

6:20 pm-9:15 am

2 stops12h 55m

Washington, D.C. Dulles Intl

Thu 4/16

6:00 am-5:40 pm

2 stops13h 40m

$419

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 4/15

1:09 pm-11:44 pm

1 stop8h 35m

Washington, D.C. Dulles Intl

Mon 4/20

10:11 am-10:29 pm

2 stops14h 18m

$444

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Tue 5/19

2:35 pm-11:34 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Sat 5/23

3:56 pm-9:34 pm

1 stop7h 38m

$446

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 4/13

6:20 pm-9:15 am

2 stops12h 55m

Washington, D.C. Dulles Intl

Thu 4/16

6:00 am-5:40 pm

2 stops13h 40m

$449

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 4/15

2:30 pm-11:34 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Mon 4/20

4:00 pm-9:17 pm

1 stop7h 17m

$453

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 4/27

6:15 pm-5:50 am

1 stop9h 35m

Washington, D.C. Dulles Intl

Wed 4/29

9:00 am-5:35 pm

1 stop10h 35m

$459

Flights are sorted by cheapest round-trip flights 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 33% 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

7h 04m

Direct flights

None
The fastest flight from Great Falls to Washington, D.C. Dulles Intl Airport takes 7h 04m
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 7h 04m.

  • 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
9,514 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
Laurel
Colonial Beach
Gaithersburg
Towson
Silver Spring
Fredericksburg
Rockville
Tysons
Manassas
Sterling
Linthicum Heights
Springfield
Bethesda

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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