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Cheap flights from Great Falls to Washington, D.C. from $225

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 6/10. 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.
Alaska Airlines Logo
5:19 pm - 5:40 am
GTF
-
IAD
10h 21m
1 stop
Alaska Airlines Logo
9:00 am - 4:39 pm
IAD
-
GTF
9h 39m
1 stop
$338Alaska Airlines
Wed, Sep 16 - Sat, Sep 19
Delta Logo
1:10 pm - 11:51 pm
GTF
-
IAD
8h 41m
1 stop
Delta Logo
1:00 pm - 10:44 pm
IAD
-
GTF
11h 44m
2 stops
$344Delta
Fri, Sep 4 - Sat, Sep 12
Alaska Airlines Logo
5:19 pm - 5:40 am
GTF
-
IAD
10h 21m
1 stop
Alaska Airlines Logo
9:00 am - 4:39 pm
IAD
-
GTF
9h 39m
1 stop
$348Alaska Airlines
Wed, Sep 16 - Sat, Sep 19
Delta Logo
1:10 pm - 12:10 am
GTF
-
IAD
9h 00m
2 stops
Delta Logo
1:00 pm - 10:44 pm
IAD
-
GTF
11h 44m
2 stops
$349Delta
Thu, Sep 3 - Sat, Sep 12
United Airlines Logo
2:25 pm - 12:32 am
GTF
-
IAD
8h 07m
1 stop
United Airlines Logo
2:43 pm - 9:12 pm
IAD
-
GTF
8h 29m
1 stop
$361United Airlines
Thu, Sep 3 - Sat, Sep 12
Alaska Airlines Logo
5:15 pm - 5:40 am
GTF
-
IAD
10h 25m
1 stop
Alaska Airlines Logo
9:35 am - 4:35 pm
IAD
-
GTF
9h 00m
1 stop
$398Alaska Airlines
Mon, Oct 5 - Sat, Oct 10
United Airlines Logo
2:37 pm - 12:45 am
GTF
-
IAD
8h 08m
1 stop
United Airlines Logo
6:30 am - 1:41 pm
IAD
-
GTF
9h 11m
1 stop
$408United Airlines
Fri, May 29 - Tue, Jun 2
Delta Logo
1:10 pm - 11:46 pm
GTF
-
IAD
8h 36m
1 stop
Delta Logo
7:15 am - 12:27 pm
IAD
-
GTF
7h 12m
1 stop
$412Delta
Tue, Oct 6 - Thu, Oct 8
Delta Logo
6:19 pm - 9:21 am
GTF
-
IAD
13h 02m
2 stops
Delta Logo
10:16 am - 10:40 pm
IAD
-
GTF
14h 24m
2 stops
$414Delta
Sat, Jun 6 - Tue, Jun 9
Delta Logo
1:10 pm - 11:51 pm
GTF
-
IAD
8h 41m
1 stop
Delta Logo
7:15 am - 12:27 pm
IAD
-
GTF
7h 12m
1 stop
$433Delta
Sun, Oct 4 - Sat, Oct 10

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
Sep 16
GTF5:19 pmGreat Falls
10h 21m
1 stop
IAD5:40 amWashington, D.C. Dulles Intl
Sep 19
IAD9:00 amWashington, D.C. Dulles Intl
9h 39m
1 stop
GTF4:39 pmGreat Falls
$338
Alaska Airlines
Sep 16
GTF5:19 pmGreat Falls
10h 21m
1 stop
IAD5:40 amWashington, D.C. Dulles Intl
Sep 19
IAD9:00 amWashington, D.C. Dulles Intl
9h 39m
1 stop
GTF4:39 pmGreat Falls
$348
Alaska Airlines
Oct 5
GTF5:15 pmGreat Falls
10h 25m
1 stop
IAD5:40 amWashington, D.C. Dulles Intl
Oct 10
IAD9:35 amWashington, D.C. Dulles Intl
9h 00m
1 stop
GTF4:35 pmGreat Falls
$398

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
Sep 3
GTF2:25 pmGreat Falls
8h 07m
1 stop
IAD12:32 amWashington, D.C. Dulles Intl
Sep 12
IAD2:43 pmWashington, D.C. Dulles Intl
8h 29m
1 stop
GTF9:12 pmGreat Falls
$361
United Airlines
May 29
GTF2:37 pmGreat Falls
8h 08m
1 stop
IAD12:45 amWashington, D.C. Dulles Intl
Jun 2
IAD6:30 amWashington, D.C. Dulles Intl
9h 11m
1 stop
GTF1:41 pmGreat Falls
$408
United Airlines
Jun 6
GTF2:37 pmGreat Falls
6h 55m
1 stop
IAD11:32 pmWashington, D.C. Dulles Intl
Jun 9
IAD6:30 amWashington, D.C. Dulles Intl
9h 11m
1 stop
GTF1:41 pmGreat Falls
$438

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 May 17, 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

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 9/16

5:19 pm-5:40 am

1 stop10h 21m

Washington, D.C. Dulles Intl

Sat 9/19

9:00 am-4:39 pm

1 stop9h 39m

$338

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Fri 9/4

1:10 pm-11:51 pm

1 stop8h 41m

Washington, D.C. Dulles Intl

Sat 9/12

1:00 pm-10:44 pm

2 stops11h 44m

$344

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Wed 9/16

5:19 pm-5:40 am

1 stop10h 21m

Washington, D.C. Dulles Intl

Sat 9/19

9:00 am-4:39 pm

1 stop9h 39m

$348

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Thu 9/3

1:10 pm-12:10 am

2 stops9h 00m

Washington, D.C. Dulles Intl

Sat 9/12

1:00 pm-10:44 pm

2 stops11h 44m

$349

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Thu 9/3

2:25 pm-12:32 am

1 stop8h 07m

Washington, D.C. Dulles Intl

Sat 9/12

2:43 pm-9:12 pm

1 stop8h 29m

$361

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Mon 10/5

5:15 pm-5:40 am

1 stop10h 25m

Washington, D.C. Dulles Intl

Sat 10/10

9:35 am-4:35 pm

1 stop9h 00m

$398

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Fri 5/29

2:37 pm-12:45 am

1 stop8h 08m

Washington, D.C. Dulles Intl

Tue 6/2

6:30 am-1:41 pm

1 stop9h 11m

$408
Quickest round-trip

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Tue 10/6

1:10 pm-11:46 pm

1 stop8h 36m

Washington, D.C. Dulles Intl

Thu 10/8

7:15 am-12:27 pm

1 stop7h 12m

$412

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Sat 6/6

6:19 pm-9:21 am

2 stops13h 02m

Washington, D.C. Dulles Intl

Tue 6/9

10:16 am-10:40 pm

2 stops14h 24m

$414

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Sun 10/4

1:10 pm-11:51 pm

1 stop8h 41m

Washington, D.C. Dulles Intl

Sat 10/10

7:15 am-12:27 pm

1 stop7h 12m

$433

Flights are sorted by cheapest round-trip flights first.

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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 3% 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 55m

Direct flights

None
The fastest flight from Great Falls to Washington, D.C. Dulles Intl Airport takes 6h 55m
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

Frequently asked questions about flying from Great Falls to Washington, D.C. Dulles Intl Airport

  • 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 55m.

  • 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 $299Free CancellationRating
7.4
9,730 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
Gaithersburg
Colonial Beach
Fredericksburg
Silver Spring
Towson
Rockville
Manassas
Sterling
Linthicum Heights
Tysons
Bethesda
Springfield

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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