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Cheap flights from Great Falls to Washington, D.C. from $224

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 10/23. 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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Find the cheapest flights from Great Falls to Washington, D.C.

Cheap round-trip flights

Delta Logo
1:10 pm - 11:49 pmGTF-IAD
8h 39m1 stop
Delta Logo
7:20 am - 12:29 pmIAD-GTF
7h 09m1 stop
$434Delta
Find Deal
jue., nov. 13 - sáb., nov. 15
Delta Logo
1:10 pm - 11:49 pmGTF-IAD
8h 39m1 stop
Delta Logo
9:00 am - 5:42 pmIAD-GTF
10h 42m2 stops
$444Delta
Find Deal
jue., nov. 13 - sáb., nov. 15
Delta Logo
6:11 pm - 9:09 amGTF-IAD
12h 58m2 stops
Delta Logo
6:00 am - 12:25 pmIAD-GTF
8h 25m2 stops
$449Delta
Find Deal
lun., sep. 29 - mié., oct. 1
Delta Logo
6:11 pm - 9:09 amGTF-IAD
12h 58m2 stops
Delta Logo
7:05 am - 12:25 pmIAD-GTF
7h 20m1 stop
$472Delta
Find Deal
lun., sep. 29 - mié., oct. 1
Delta Logo
6:09 pm - 9:16 amGTF-IAD
13h 07m2 stops
Delta Logo
7:35 am - 5:29 pmIAD-GTF
11h 54m2 stops
$492Delta
Find Deal
mar., oct. 21 - dom., oct. 26
United Airlines Logo
2:35 pm - 11:15 pmGTF-IAD
6h 40m1 stop
United Airlines Logo
4:00 pm - 9:32 pmIAD-GTF
7h 32m1 stop
$506United Airlines
Find Deal
mié., dic. 10 - sáb., dic. 13
Alaska Airlines Logo
4:29 pm - 7:33 amGTF-IAD
13h 04m1 stop
Alaska Airlines Logo
7:00 am - 3:49 pmIAD-GTF
10h 49m1 stop
$508Alaska Airlines
Find Deal
mié., sep. 17 - sáb., sep. 20
United Airlines Logo
7:00 am - 4:43 pmGTF-IAD
7h 43m1 stop
United Airlines Logo
8:15 am - 1:37 pmIAD-GTF
31h 22m2 stops
$529United Airlines
Find Deal
mié., sep. 17 - sáb., sep. 20
Alaska Airlines Logo
4:29 pm - 7:33 amGTF-IAD
13h 04m1 stop
Alaska Airlines Logo
7:00 am - 3:49 pmIAD-GTF
10h 49m1 stop
$542Alaska Airlines
Find Deal
lun., sep. 29 - mié., oct. 1
Logo
6:20 am - 4:30 pmGTF-IAD
8h 10m1 stop
Logo
7:35 am - 6:55 pmIAD-GTF
13h 20m1 stop
$755
Find Deal
jue., nov. 27 - jue., dic. 4

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
Nov 13
GTF1:10 pmGreat Falls
8h 39m
1 stop
IAD11:49 pmWashington, D.C. Dulles Intl
Nov 15
IAD7:20 amWashington, D.C. Dulles Intl
7h 09m
1 stop
GTF12:29 pmGreat Falls
$434
Find similar
Delta
Nov 13
GTF1:10 pmGreat Falls
8h 39m
1 stop
IAD11:49 pmWashington, D.C. Dulles Intl
Nov 15
IAD9:00 amWashington, D.C. Dulles Intl
10h 42m
2 stops
GTF5:42 pmGreat Falls
$444
Find similar
Delta
Sep 29
GTF6:11 pmGreat Falls
12h 58m
2 stops
IAD9:09 amWashington, D.C. Dulles Intl
Oct 1
IAD6:00 amWashington, D.C. Dulles Intl
8h 25m
2 stops
GTF12:25 pmGreat Falls
$449
Find similar

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 17
GTF4:29 pmGreat Falls
13h 04m
1 stop
IAD7:33 amWashington, D.C. Dulles Intl
Sep 20
IAD7:00 amWashington, D.C. Dulles Intl
10h 49m
1 stop
GTF3:49 pmGreat Falls
$508
Find similar
Alaska Airlines
Sep 29
GTF4:29 pmGreat Falls
13h 04m
1 stop
IAD7:33 amWashington, D.C. Dulles Intl
Oct 1
IAD7:00 amWashington, D.C. Dulles Intl
10h 49m
1 stop
GTF3:49 pmGreat Falls
$542
Find similar
Alaska Airlines
Oct 21
GTF6:15 pmGreat Falls
28h 08m
1 stop
IAD12:23 amWashington, D.C. Dulles Intl
Oct 26
IAD7:43 amWashington, D.C. Dulles Intl
12h 27m
1 stop
GTF6:10 pmGreat Falls
$609
Find similar

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 agosto 20, 2025.
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

jue. 11/13

1:10 pm-11:49 pm

1 stop8h 39m

Washington, D.C. Dulles Intl

sáb. 11/15

7:20 am-12:29 pm

1 stop7h 09m

$434

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

jue. 11/13

1:10 pm-11:49 pm

1 stop8h 39m

Washington, D.C. Dulles Intl

sáb. 11/15

9:00 am-5:42 pm

2 stops10h 42m

$444

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

lun. 9/29

6:11 pm-9:09 am

2 stops12h 58m

Washington, D.C. Dulles Intl

mié. 10/1

6:00 am-12:25 pm

2 stops8h 25m

$449

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

lun. 9/29

6:11 pm-9:09 am

2 stops12h 58m

Washington, D.C. Dulles Intl

mié. 10/1

7:05 am-12:25 pm

1 stop7h 20m

$472

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mar. 10/21

6:09 pm-9:16 am

2 stops13h 07m

Washington, D.C. Dulles Intl

dom. 10/26

7:35 am-5:29 pm

2 stops11h 54m

$492

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 12/10

2:35 pm-11:15 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

sáb. 12/13

4:00 pm-9:32 pm

1 stop7h 32m

$506

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 9/17

4:29 pm-7:33 am

1 stop13h 04m

Washington, D.C. Dulles Intl

sáb. 9/20

7:00 am-3:49 pm

1 stop10h 49m

$508

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 9/17

7:00 am-4:43 pm

1 stop7h 43m

Washington, D.C. Dulles Intl

sáb. 9/20

8:15 am-1:37 pm

2 stops31h 22m

$529

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

lun. 9/29

4:29 pm-7:33 am

1 stop13h 04m

Washington, D.C. Dulles Intl

mié. 10/1

7:00 am-3:49 pm

1 stop10h 49m

$542

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

jue. 11/27

6:20 am-4:30 pm

1 stop8h 10m

Washington, D.C. Dulles Intl

jue. 12/4

7:35 am-6:55 pm

1 stop13h 20m

$755

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Tuesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $453. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Great Falls to Washington, D.C. Dulles Intl Airport for around $757.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Great Falls at noon is the least expensive time of day to depart. momondo users have found prices as low as $453 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $707 on average. Flights to Washington, D.C. Dulles Intl Airport from Great Falls in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You could potentially save up to 54% 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

Direct flights

None
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.
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  • 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 34m.

  • 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 $424Free CancellationRating
7.4
8,928 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
Gettysburg
Arlington
National Harbor
Winchester
Woodbridge
Waldorf
Tysons
Silver Spring
Laurel
Colonial Beach
Fredericksburg
Harpers Ferry
Manassas
Towson
Rockville
Gaithersburg
Reston
Fairfax
Glen Burnie

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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