Cheap flights from Great Falls to Washington, D.C. from $348

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 12/20. 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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Delta Logo
6:10 pm - 11:27 pmGTF-IAD
27h 17m2 stops
Delta Logo
7:05 am - 12:31 pmIAD-GTF
7h 26m1 stop
$395Delta
Find Deal
mié., dic. 10 - sáb., dic. 13
Delta Logo
6:10 pm - 11:27 pmGTF-IAD
27h 17m2 stops
Delta Logo
6:55 am - 5:28 pmIAD-GTF
12h 33m2 stops
$400Delta
Find Deal
mié., dic. 10 - sáb., dic. 13
Alaska Airlines Logo
7:35 pm - 6:06 amGTF-IAD
8h 31m1 stop
Alaska Airlines Logo
7:34 am - 6:55 pmIAD-GTF
13h 21m1 stop
$402Alaska Airlines
Find Deal
jue., dic. 11 - sáb., dic. 13
Delta Logo
1:12 pm - 11:29 pmGTF-IAD
8h 17m1 stop
Delta Logo
7:05 am - 12:31 pmIAD-GTF
7h 26m1 stop
$406Delta
Find Deal
mar., dic. 9 - sáb., dic. 13
Alaska Airlines Logo
7:21 pm - 5:43 pmGTF-IAD
20h 22m1 stop
Alaska Airlines Logo
6:43 pm - 6:41 pmIAD-GTF
25h 58m1 stop
$447Alaska Airlines
Find Deal
mié., dic. 31 - lun., ene. 5
Alaska Airlines Logo
7:21 pm - 5:43 pmGTF-IAD
20h 22m1 stop
Alaska Airlines Logo
7:33 am - 6:41 pmIAD-GTF
13h 08m1 stop
$542Alaska Airlines
Find Deal
mié., dic. 31 - dom., ene. 4
United Airlines Logo
2:35 pm - 11:48 amGTF-IAD
19h 13m2 stops
United Airlines Logo
8:20 am - 1:39 pmIAD-GTF
7h 19m1 stop
$652United Airlines
Find Deal
mié., dic. 31 - lun., ene. 5
United Airlines Logo
2:35 pm - 11:55 amGTF-IAD
19h 20m2 stops
United Airlines Logo
6:20 am - 1:39 pmIAD-GTF
9h 19m1 stop
$657United Airlines
Find Deal
mar., dic. 30 - lun., ene. 5
United Airlines Logo
2:35 pm - 5:19 amGTF-IAD
12h 44m1 stop
United Airlines Logo
8:20 am - 1:39 pmIAD-GTF
7h 19m1 stop
$716United Airlines
Find Deal
mar., dic. 30 - lun., ene. 5
United Airlines Logo
2:35 pm - 11:48 amGTF-IAD
19h 13m2 stops
United Airlines Logo
6:20 am - 1:39 pmIAD-GTF
9h 19m1 stop
$717United Airlines
Find Deal
mié., dic. 31 - dom., ene. 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
Dec 10
GTF6:10 pmGreat Falls
27h 17m
2 stops
IAD11:27 pmWashington, D.C. Dulles Intl
Dec 13
IAD7:05 amWashington, D.C. Dulles Intl
7h 26m
1 stop
GTF12:31 pmGreat Falls
Delta
Dec 10
GTF6:10 pmGreat Falls
27h 17m
2 stops
IAD11:27 pmWashington, D.C. Dulles Intl
Dec 13
IAD6:55 amWashington, D.C. Dulles Intl
12h 33m
2 stops
GTF5:28 pmGreat Falls
Delta
Dec 9
GTF1:12 pmGreat Falls
8h 17m
1 stop
IAD11:29 pmWashington, D.C. Dulles Intl
Dec 13
IAD7:05 amWashington, D.C. Dulles Intl
7h 26m
1 stop
GTF12:31 pmGreat Falls

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
Dec 11
GTF7:35 pmGreat Falls
8h 31m
1 stop
IAD6:06 amWashington, D.C. Dulles Intl
Dec 13
IAD7:34 amWashington, D.C. Dulles Intl
13h 21m
1 stop
GTF6:55 pmGreat Falls
Alaska Airlines
Dec 31
GTF7:21 pmGreat Falls
20h 22m
1 stop
IAD5:43 pmWashington, D.C. Dulles Intl
Jan 5
IAD6:43 pmWashington, D.C. Dulles Intl
25h 58m
1 stop
GTF6:41 pmGreat Falls
Alaska Airlines
Dec 31
GTF7:21 pmGreat Falls
20h 22m
1 stop
IAD5:43 pmWashington, D.C. Dulles Intl
Jan 4
IAD7:33 amWashington, D.C. Dulles Intl
13h 08m
1 stop
GTF6:41 pmGreat Falls

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 octubre 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

mié. 12/10

6:10 pm-11:27 pm

2 stops27h 17m

Washington, D.C. Dulles Intl

sáb. 12/13

7:05 am-12:31 pm

1 stop7h 26m

$395

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 12/10

6:10 pm-11:27 pm

2 stops27h 17m

Washington, D.C. Dulles Intl

sáb. 12/13

6:55 am-5:28 pm

2 stops12h 33m

$400

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

jue. 12/11

7:35 pm-6:06 am

1 stop8h 31m

Washington, D.C. Dulles Intl

sáb. 12/13

7:34 am-6:55 pm

1 stop13h 21m

$402

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mar. 12/9

1:12 pm-11:29 pm

1 stop8h 17m

Washington, D.C. Dulles Intl

sáb. 12/13

7:05 am-12:31 pm

1 stop7h 26m

$406

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 12/31

7:21 pm-5:43 pm

1 stop20h 22m

Washington, D.C. Dulles Intl

lun. 1/5

6:43 pm-6:41 pm

1 stop25h 58m

$447

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 12/31

7:21 pm-5:43 pm

1 stop20h 22m

Washington, D.C. Dulles Intl

dom. 1/4

7:33 am-6:41 pm

1 stop13h 08m

$542

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 12/31

2:35 pm-11:48 am

2 stops19h 13m

Washington, D.C. Dulles Intl

lun. 1/5

8:20 am-1:39 pm

1 stop7h 19m

$652

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mar. 12/30

2:35 pm-11:55 am

2 stops19h 20m

Washington, D.C. Dulles Intl

lun. 1/5

6:20 am-1:39 pm

1 stop9h 19m

$657

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mar. 12/30

2:35 pm-5:19 am

1 stop12h 44m

Washington, D.C. Dulles Intl

lun. 1/5

8:20 am-1:39 pm

1 stop7h 19m

$716

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

mié. 12/31

2:35 pm-11:48 am

2 stops19h 13m

Washington, D.C. Dulles Intl

dom. 1/4

6:20 am-1:39 pm

1 stop9h 19m

$717

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

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 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

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.
  • 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 48m.

  • 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
8,991 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
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Fairfax
Gaithersburg
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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1 adult
mié. 11/19
mié. 11/26

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