How long does it take to fly to Washington, D.C. Dulles Intl Airport?

Flight times from Montana to Washington, D.C. Dulles Intl Airport vary, but if you’re flying out of Bozeman and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 3h 52m on average. Another popular route from Montana to Washington, D.C. Dulles Intl Airport is flying from Billings to Washington, D.C. Dulles Intl Airport, which will take roughly 5h 55m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Montana to Washington, D.C. Dulles Intl?

American Airlines, United Airlines, and Alaska Airlines are the most popular carriers operating from Montana to Washington, D.C. Dulles Intl

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

Prices for flights from Montana to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

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

As of November 2026, there are 2 operators available to choose from for flights from Montana to Washington, D.C. Dulles Intl Airport.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana 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 you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$200 Cheap Flights from Montana to Washington, D.C. Dulles Intl Airport in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montana to Washington, D.C.

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:55 pm - 5:31 amGTF Great Falls-IAD Washington, D.C. Dulles Intl

10h 36m1 stop Seattle/Tacoma Intl

7:00 am - 4:13 pmIAD Washington, D.C. Dulles Intl-GTF Great Falls

11h 13m1 stop Seattle/Tacoma Intl

$377Alaska Airlines

Sat, Feb 20 - Wed, Feb 24

6:21 pm - 11:30 amBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

15h 09m2 stops Salt Lake City New York John F Kennedy Intl

7:00 am - 12:20 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

7h 20m1 stop Salt Lake City

$384Delta

Fri, Dec 4 - Tue, Dec 8

2:33 pm - 11:15 pmBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

6h 42m1 stop Denver Intl

2:10 pm - 8:59 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

8h 49m1 stop Denver Intl

$386United Airlines

Thu, Dec 3 - Mon, Dec 7

6:21 pm - 9:55 amBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

13h 34m2 stops Salt Lake City Atlanta Hartsfield-Jackson

10:11 am - 10:28 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

14h 17m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$389Delta

Fri, Dec 4 - Tue, Dec 8

2:39 pm - 11:21 pmMSO Missoula Johnson-Bell Field-IAD Washington, D.C. Dulles Intl

6h 42m1 stop Denver Intl

6:45 am - 1:33 pmIAD Washington, D.C. Dulles Intl-MSO Missoula Johnson-Bell Field

8h 48m1 stop Denver Intl

$394United Airlines

Thu, Dec 17 - Fri, Jan 1

12:40 pm - 9:13 pmBZN Bozeman Gallatin Field-IAD Washington, D.C. Dulles Intl

6h 33m1 stop Chicago O'Hare Intl

8:15 am - 3:32 pmIAD Washington, D.C. Dulles Intl-BZN Bozeman Gallatin Field

9h 17m1 stop Denver Intl

$394United Airlines

Thu, Dec 17 - Sat, Jan 9

6:21 pm - 11:30 amBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

15h 09m2 stops Salt Lake City New York John F Kennedy Intl

12:38 pm - 10:28 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

11h 50m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$399Delta

Fri, Dec 4 - Tue, Dec 8

6:00 am - 4:26 pmBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

8h 26m1 stop Seattle/Tacoma Intl

7:00 am - 3:08 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

10h 08m1 stop Seattle/Tacoma Intl

$414Alaska Airlines

Wed, Feb 24 - Sat, Feb 27

6:00 am - 4:26 pmBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

8h 26m1 stop Seattle/Tacoma Intl

7:00 am - 3:08 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

10h 08m1 stop Seattle/Tacoma Intl

$424Alaska Airlines

Wed, Feb 24 - Sat, Feb 27

4:50 pm - 5:35 amMSO Missoula Johnson-Bell Field-IAD Washington, D.C. Dulles Intl

10h 45m1 stop Seattle/Tacoma Intl

7:00 am - 4:00 pmIAD Washington, D.C. Dulles Intl-MSO Missoula Johnson-Bell Field

11h 00m1 stop Seattle/Tacoma Intl

$434Alaska Airlines

Mon, Dec 7 - Fri, Dec 11

Cheap last minute flights

Enter your travel dates to find the best prices.

10:30 am - 9:30 pmBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

9h 00m1 stop Denver Intl

4:10 pm - 9:14 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

7h 04m1 stop Denver Intl

$492United Airlines

Sat, Nov 7 - Sat, Nov 21

5:00 am - 12:56 pmBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

5h 56m1 stop Denver Intl

5:20 pm - 10:30 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

7h 10m1 stop Denver Intl

$539United Airlines

Sun, Nov 8 - Wed, Nov 11

2:37 pm - 11:15 pmMSO Missoula Johnson-Bell Field-IAD Washington, D.C. Dulles Intl

6h 38m1 stop Denver Intl

6:10 am - 1:31 pmIAD Washington, D.C. Dulles Intl-MSO Missoula Johnson-Bell Field

9h 21m1 stop Denver Intl

$539United Airlines

Fri, Nov 6 - Sun, Nov 8

6:15 am - 3:44 pmMSO Missoula Johnson-Bell Field-IAD Washington, D.C. Dulles Intl

7h 29m1 stop Denver Intl

2:05 pm - 9:47 pmIAD Washington, D.C. Dulles Intl-MSO Missoula Johnson-Bell Field

9h 42m1 stop Denver Intl

$539United Airlines

Tue, Nov 10 - Fri, Nov 13

8:30 am - 6:17 pmMSO Missoula Johnson-Bell Field-IAD Washington, D.C. Dulles Intl

7h 47m1 stop Minneapolis St Paul

10:11 am - 7:57 pmIAD Washington, D.C. Dulles Intl-MSO Missoula Johnson-Bell Field

11h 46m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

$544Delta

Tue, Nov 10 - Fri, Nov 13

1:19 pm - 12:41 amMSO Missoula Johnson-Bell Field-IAD Washington, D.C. Dulles Intl

9h 22m2 stops Salt Lake City Atlanta Hartsfield-Jackson

5:16 pm - 12:20 amIAD Washington, D.C. Dulles Intl-MSO Missoula Johnson-Bell Field

9h 04m2 stops Detroit Metropolitan Wayne County Salt Lake City

$550Delta

Tue, Nov 10 - Fri, Nov 13

6:30 am - 5:10 pmBIL Billings Logan Intl-IAD Washington, D.C. Dulles Intl

8h 40m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson

2:30 pm - 7:42 pmIAD Washington, D.C. Dulles Intl-BIL Billings Logan Intl

7h 12m1 stop Minneapolis St Paul

$573Delta

Sat, Nov 7 - Sat, Nov 21

3:35 pm - 11:21 pmFCA Kalispell Glacier Park-IAD Washington, D.C. Dulles Intl

5h 46m1 stop Minneapolis St Paul

7:25 am - 2:40 pmIAD Washington, D.C. Dulles Intl-FCA Kalispell Glacier Park

9h 15m1 stop Minneapolis St Paul

$599Delta

Wed, Nov 11 - Tue, Nov 17

2:45 pm - 11:15 pmGTF Great Falls-IAD Washington, D.C. Dulles Intl

6h 30m1 stop Denver Intl

6:10 am - 1:49 pmIAD Washington, D.C. Dulles Intl-GTF Great Falls

9h 39m1 stop Denver Intl

$618United Airlines

Fri, Nov 6 - Sun, Nov 8

1:50 pm - 5:44 amBZN Bozeman Gallatin Field-IAD Washington, D.C. Dulles Intl

13h 54m1 stop Seattle/Tacoma Intl

5:17 pm - 9:39 amIAD Washington, D.C. Dulles Intl-BZN Bozeman Gallatin Field

18h 22m1 stop Seattle/Tacoma Intl

$674Alaska Airlines

Sat, Nov 7 - Wed, Nov 11

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

Our best Alaska Airlines deals on Montana to Washington, D.C. Dulles Intl Airport flight tickets

Alaska Airlines

Feb 20

GTF4:55 pmGreat Falls

10h 36m

1 stop

IAD5:31 amWashington, D.C. Dulles Intl

Feb 24

IAD7:00 amWashington, D.C. Dulles Intl

11h 13m

1 stop

GTF4:13 pmGreat Falls

$377

Alaska Airlines

Feb 24

BIL6:00 amBillings Logan Intl

8h 26m

1 stop

IAD4:26 pmWashington, D.C. Dulles Intl

Feb 27

IAD7:00 amWashington, D.C. Dulles Intl

10h 08m

1 stop

BIL3:08 pmBillings Logan Intl

$414

Alaska Airlines

Dec 7

MSO4:50 pmMissoula Johnson-Bell Field

10h 45m

1 stop

IAD5:35 amWashington, D.C. Dulles Intl

Dec 11

IAD7:00 amWashington, D.C. Dulles Intl

11h 00m

1 stop

MSO4:00 pmMissoula Johnson-Bell Field

$434

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

Our best Delta deals on Montana to Washington, D.C. Dulles Intl Airport flight tickets

Delta

Dec 4

BIL6:21 pmBillings Logan Intl

15h 09m

2 stops

IAD11:30 amWashington, D.C. Dulles Intl

Dec 8

IAD7:00 amWashington, D.C. Dulles Intl

7h 20m

1 stop

BIL12:20 pmBillings Logan Intl

$384

Delta

Jan 15

BIL1:13 pmBillings Logan Intl

8h 18m

1 stop

IAD11:31 pmWashington, D.C. Dulles Intl

Jan 17

IAD7:05 amWashington, D.C. Dulles Intl

7h 28m

1 stop

BIL12:33 pmBillings Logan Intl

$389

Delta

Jan 15

BIL5:05 amBillings Logan Intl

11h 00m

2 stops

IAD6:05 pmWashington, D.C. Dulles Intl

Jan 17

IAD7:05 amWashington, D.C. Dulles Intl

7h 28m

1 stop

BIL12:33 pmBillings Logan Intl

$394

momondo Fare Finder

Use the filters below to find and compare flights from Montana 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 Great Falls - IAD Washington, D.C. Dulles Intl

GTFIAD

Great Falls

Sat 2/20

4:55 pm-5:31 am

1 stop10h 36m

Washington, D.C. Dulles Intl

Wed 2/24

7:00 am-4:13 pm

1 stop11h 13m

$377

BillingsWashington, D.C.

BIL Billings Logan Intl - IAD Washington, D.C. Dulles Intl

BILIAD

Billings Logan Intl

Fri 12/4

6:21 pm-11:30 am

2 stops15h 09m

Washington, D.C. Dulles Intl

Tue 12/8

7:00 am-12:20 pm

1 stop7h 20m

$384

BillingsWashington, D.C.

BIL Billings Logan Intl - IAD Washington, D.C. Dulles Intl

BILIAD

Billings Logan Intl

Thu 12/3

2:33 pm-11:15 pm

1 stop6h 42m

Washington, D.C. Dulles Intl

Mon 12/7

2:10 pm-8:59 pm

1 stop8h 49m

$386

BillingsWashington, D.C.

BIL Billings Logan Intl - IAD Washington, D.C. Dulles Intl

BILIAD

Billings Logan Intl

Fri 12/4

6:21 pm-9:55 am

2 stops13h 34m

Washington, D.C. Dulles Intl

Tue 12/8

10:11 am-10:28 pm

2 stops14h 17m

$389

Quickest round-trip

MissoulaWashington, D.C.

MSO Missoula Johnson-Bell Field - IAD Washington, D.C. Dulles Intl

MSOIAD

Missoula Johnson-Bell Field

Thu 12/17

2:39 pm-11:21 pm

1 stop6h 42m

Washington, D.C. Dulles Intl

Fri 1/1

6:45 am-1:33 pm

1 stop8h 48m

$394

BozemanWashington, D.C.

BZN Bozeman Gallatin Field - IAD Washington, D.C. Dulles Intl

BZNIAD

Bozeman Gallatin Field

Thu 12/17

12:40 pm-9:13 pm

1 stop6h 33m

Washington, D.C. Dulles Intl

Sat 1/9

8:15 am-3:32 pm

1 stop9h 17m

$394

BillingsWashington, D.C.

BIL Billings Logan Intl - IAD Washington, D.C. Dulles Intl

BILIAD

Billings Logan Intl

Fri 12/4

6:21 pm-11:30 am

2 stops15h 09m

Washington, D.C. Dulles Intl

Tue 12/8

12:38 pm-10:28 pm

2 stops11h 50m

$399

BillingsWashington, D.C.

BIL Billings Logan Intl - IAD Washington, D.C. Dulles Intl

BILIAD

Billings Logan Intl

Wed 2/24

6:00 am-4:26 pm

1 stop8h 26m

Washington, D.C. Dulles Intl

Sat 2/27

7:00 am-3:08 pm

1 stop10h 08m

$414

BillingsWashington, D.C.

BIL Billings Logan Intl - IAD Washington, D.C. Dulles Intl

BILIAD

Billings Logan Intl

Wed 2/24

6:00 am-4:26 pm

1 stop8h 26m

Washington, D.C. Dulles Intl

Sat 2/27

7:00 am-3:08 pm

1 stop10h 08m

$424

MissoulaWashington, D.C.

MSO Missoula Johnson-Bell Field - IAD Washington, D.C. Dulles Intl

MSOIAD

Missoula Johnson-Bell Field

Mon 12/7

4:50 pm-5:35 am

1 stop10h 45m

Washington, D.C. Dulles Intl

Fri 12/11

7:00 am-4:00 pm

1 stop11h 00m

$434

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montana 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

Prices

Airlines

Other information

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, December is the cheapest month to fly from Montana to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $405. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of December, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $410.

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

Our data shows that Saturday 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 $489. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Montana to Washington, D.C. Dulles Intl Airport for around $1,378.

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 Montana at noon is the least expensive time of day to depart. momondo users have found prices as low as $394 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 $784 on average. Flights to Washington, D.C. Dulles Intl Airport from Montana in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Montana to Washington, D.C. Dulles Intl flight route?

Fly from Bozeman Gallatin Field to Washington, D.C. Dulles Intl for the best Montana - Washington, D.C. Dulles Intl flight prices

What cabin class options are available on Montana to Washington, D.C. Dulles Intl Airport flights?

There is only 1 cabin class available to choose from on Montana to Washington, D.C. Dulles Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 82% on your flight if you consider stops on a Montana to Washington, D.C. Dulles Intl Airport flight.

Cheap Montana to Washington, D.C. Dulles Intl Airport flight deals and tips

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

Best Price Found	$200
Fastest flight time	3h 52m
Direct flights	Sun

The best one-way flight to Washington, D.C. Dulles Intl Airport from Montana in the past 72 hours is $200. The best round-trip flight deal from Montana to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $377.

The fastest flight from Montana to Washington, D.C. Dulles Intl Airport takes 3h 52m

Direct flights go from Montana to Washington, D.C. Dulles Intl Airport on Sunday. There are no airlines offering direct flights.

Search flight deals

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

When did momondo last update prices for flights from Montana to Washington, D.C. Dulles Intl Airport?
Prices for flights from Montana to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Montana to Washington, D.C. Dulles Intl Airport?
As of November 2026, there are 2 operators available to choose from for flights from Montana to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Montana to Washington, D.C. Dulles Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana 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 you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Montana to Washington, D.C. Dulles Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Montana to Washington, D.C. Dulles Intl Airport is Boeing 737 MAX 8, representing 40.00% of all bookings. The subsequent popular models are Boeing 737-800 at 30.00%, Airbus A319 at 20.00%, and Airbus A320-100/200 at 10.00%.

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

Compare and see reviews for airlines that fly from Montana to Washington, D.C. Dulles Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $277	Free Cancellation	Rating 7.3 10,458 reviews		Search United Airlines flights
Alaska Airlines	PriceFrom $384	Free Cancellation	Rating 7.9 13,141 reviews		Search Alaska Airlines flights

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Winchester

Fredericksburg

Waldorf

Laurel

Gaithersburg

Linthicum Heights

Woodbridge

Rockville

Silver Spring

Sterling

Towson

Fairfax

Springfield

Glen Burnie

Edgewood

Chantilly

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

All flight searches from Montana to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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Yes. momondo can track prices for Montana to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Montana to Washington, D.C. from $200

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Washington, D.C. departing on 12/1. 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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Alaska Airlines flights from Montana to Washington, D.C. Dulles Intl Airport

Our best Alaska Airlines deals on Montana to Washington, D.C. Dulles Intl Airport flight tickets

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

Our best Delta deals on Montana to Washington, D.C. Dulles Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Montana to Washington, D.C. Dulles Intl Airport that are best for you.

See travel insights to Washington, D.C. from

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

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

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

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

What is the cheapest Montana to Washington, D.C. Dulles Intl flight route?

What cabin class options are available on Montana to Washington, D.C. Dulles Intl Airport flights?

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

What is the cheapest airline that flies from Montana to Washington, D.C. Dulles Intl?

How long does it take to fly to Washington, D.C. Dulles Intl Airport?

Cheap Montana to Washington, D.C. Dulles Intl Airport flight deals and tips

Best Price Found

Fastest flight time

Direct flights

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

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

Compare and see reviews for airlines that fly from Montana to Washington, D.C. Dulles Intl Airport with momondo

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List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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