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 59m 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 14m. 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?

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

What airlines fly to Washington, D.C. Dulles Intl Airport?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Montana according to our data. United Airlines is the first choice among our users, with 71% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 4 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

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 February 2026, there are 4 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.

$125 Cheap Flights from Montana to Washington, D.C. Dulles Intl Airport in 2026

Q: How many flights depart from Montana to Washington, D.C. Dulles Intl Airport on average per week?

As of February 2026, there are 1 flights per week flying from Montana to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Sat, with 100% of flights taking off on this day.

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:49 pm - 11:32 pm

FCA

IAD

6h 43m

1 stop

6:00 am - 1:54 pm

IAD

FCA

9h 54m

1 stop

$274Delta

Thu, Apr 30 - Mon, May 4

11:30 am - 4:35 pm

BZN

IAD

3h 05mnonstop

3:39 pm - 10:38 pm

IAD

BZN

8h 59m

1 stop

$279United Airlines

Sat, May 23 - Wed, May 27

12:39 pm - 9:04 pm

BZN

IAD

6h 25m

1 stop

6:15 am - 11:31 am

IAD

BZN

7h 16m

1 stop

$289United Airlines

Wed, Apr 15 - Wed, Apr 22

7:26 pm - 5:40 am

BZN

IAD

8h 14m

1 stop

6:22 pm - 6:46 pm

IAD

BZN

26h 24m

2 stops

$301Alaska Airlines

Thu, Apr 16 - Mon, Apr 20

2:30 pm - 11:34 pm

BIL

IAD

7h 04m

1 stop

2:37 pm - 8:57 pm

IAD

BIL

8h 20m

1 stop

$304United Airlines

Thu, Apr 30 - Tue, May 5

2:40 pm - 11:34 pm

BZN

IAD

6h 54m

1 stop

6:15 am - 11:29 am

IAD

BZN

7h 14m

1 stop

$306United Airlines

Sat, Apr 18 - Thu, Apr 23

2:40 pm - 11:34 pm

BZN

IAD

6h 54m

1 stop

8:15 am - 9:45 am

IAD

BZN

3h 30mnonstop

$308United Airlines

Tue, May 19 - Sun, May 24

4:23 pm - 5:40 am

MSO

IAD

11h 17m

1 stop

7:10 am - 2:59 pm

IAD

MSO

9h 49m

1 stop

$319Alaska Airlines

Wed, Apr 8 - Wed, Apr 22

3:20 pm - 11:40 pm

BZN

IAD

6h 20m

1 stop

4:30 pm - 9:55 pm

IAD

BZN

7h 25m

1 stop

$324Southwest

Wed, Apr 8 - Wed, Apr 15

7:20 am - 3:50 pm

BZN

IAD

6h 30m

1 stop

4:30 pm - 9:55 pm

IAD

BZN

7h 25m

1 stop

$341Southwest

Mon, Apr 20 - Wed, Apr 22

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

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

United Airlines

May 23

BZN11:30 amBozeman Gallatin Field

3h 05m

IAD4:35 pmWashington, D.C. Dulles Intl

May 27

IAD3:39 pmWashington, D.C. Dulles Intl

8h 59m

1 stop

BZN10:38 pmBozeman Gallatin Field

$279

United Airlines

Apr 15

BZN12:39 pmBozeman Gallatin Field

6h 25m

1 stop

IAD9:04 pmWashington, D.C. Dulles Intl

Apr 22

IAD6:15 amWashington, D.C. Dulles Intl

7h 16m

1 stop

BZN11:31 amBozeman Gallatin Field

$289

United Airlines

Apr 30

BIL2:30 pmBillings Logan Intl

7h 04m

1 stop

IAD11:34 pmWashington, D.C. Dulles Intl

May 5

IAD2:37 pmWashington, D.C. Dulles Intl

8h 20m

1 stop

BIL8:57 pmBillings Logan Intl

$304

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

Apr 8

MSO4:23 pmMissoula Johnson-Bell Field

11h 17m

1 stop

IAD5:40 amWashington, D.C. Dulles Intl

Apr 22

IAD7:10 amWashington, D.C. Dulles Intl

9h 49m

1 stop

MSO2:59 pmMissoula Johnson-Bell Field

$319

Alaska Airlines

Jun 3

BZN7:59 pmBozeman Gallatin Field

9h 35m

1 stop

IAD7:34 amWashington, D.C. Dulles Intl

Jun 8

IAD5:35 pmWashington, D.C. Dulles Intl

19h 28m

1 stop

BZN11:03 amBozeman Gallatin Field

$334

Alaska Airlines

May 13

MSO8:02 pmMissoula Johnson-Bell Field

9h 32m

1 stop

IAD7:34 amWashington, D.C. Dulles Intl

Sep 3

IAD6:30 amWashington, D.C. Dulles Intl

10h 53m

1 stop

MSO3:23 pmMissoula Johnson-Bell Field

$335

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

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Thu 4/30

2:49 pm-11:32 pm

1 stop6h 43m

Washington, D.C. Dulles Intl

Mon 5/4

6:00 am-1:54 pm

1 stop9h 54m

$274

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sat 5/23

11:30 am-4:35 pm

Nonstop3h 05m

Washington, D.C. Dulles Intl

Wed 5/27

3:39 pm-10:38 pm

1 stop8h 59m

$279

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Wed 4/15

12:39 pm-9:04 pm

1 stop6h 25m

Washington, D.C. Dulles Intl

Wed 4/22

6:15 am-11:31 am

1 stop7h 16m

$289

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Thu 4/16

7:26 pm-5:40 am

1 stop8h 14m

Washington, D.C. Dulles Intl

Mon 4/20

6:22 pm-6:46 pm

2 stops26h 24m

$301

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 4/30

2:30 pm-11:34 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Tue 5/5

2:37 pm-8:57 pm

1 stop8h 20m

$304

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sat 4/18

2:40 pm-11:34 pm

1 stop6h 54m

Washington, D.C. Dulles Intl

Thu 4/23

6:15 am-11:29 am

1 stop7h 14m

$306

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Tue 5/19

2:40 pm-11:34 pm

1 stop6h 54m

Washington, D.C. Dulles Intl

Sun 5/24

8:15 am-9:45 am

Nonstop3h 30m

$308

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Wed 4/8

4:23 pm-5:40 am

1 stop11h 17m

Washington, D.C. Dulles Intl

Wed 4/22

7:10 am-2:59 pm

1 stop9h 49m

$319

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Wed 4/8

3:20 pm-11:40 pm

1 stop6h 20m

Washington, D.C. Dulles Intl

Wed 4/15

4:30 pm-9:55 pm

1 stop7h 25m

$324

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Mon 4/20

7:20 am-3:50 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Wed 4/22

4:30 pm-9:55 pm

1 stop7h 25m

$341

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, November 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 $256. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $280.

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

Our data shows that Friday 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 $554. When flying out on a Sunday, 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 $929.

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 $554 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,127 on average. Flights to Washington, D.C. Dulles Intl Airport from Montana in the afternoon 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 flights?

There are 3 cabin classes available to choose from on Montana to Washington, D.C. Dulles Intl 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 49% 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	$489
Fastest flight time	3h 59m
Direct flights	Mon and Sun

The best flight deal from Montana to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $489

The fastest flight from Montana to Washington, D.C. Dulles Intl Airport takes 3h 59m

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

Search flight deals

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 February 2026, there are 4 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 27.27% of all bookings. The subsequent popular models are Boeing 737-800 at 27.27%, Airbus A319 at 18.18%, and Airbus A318/A319/A320/A321 at 9.09%.

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
Southwest	PriceFrom $220	Free Cancellation	Rating 8.0 4,300 reviews	Search Southwest flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 9,342 reviews	Search United Airlines flights
Delta	PriceFrom $277	Free Cancellation	Rating 7.9 8,235 reviews	Search Delta flights
Alaska Airlines	PriceFrom $385	Free Cancellation	Rating 8.0 11,937 reviews	Search Alaska Airlines flights

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Waldorf

Woodbridge

Colonial Beach

Laurel

Towson

Silver Spring

Gaithersburg

Tysons

Fredericksburg

Rockville

Manassas

Springfield

Fairfax

Bethesda

Sterling

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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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momondo provides multiple filters to help you find the best flight to Washington, D.C. from Montana. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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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 $125

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 4/21. 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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United Airlines flights from Montana to Washington, D.C. Dulles Intl Airport

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

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

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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 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?

What airlines fly to Washington, D.C. Dulles Intl Airport?

How many flights depart from Montana to Washington, D.C. Dulles Intl Airport on average per week?

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

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

Best Price Found

Fastest flight time

Direct flights

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

Traveling to a place near Washington, D.C.?

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Washington, D.C.?

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

How can momondo help me find flights from Montana to Washington, D.C.?

I’m not ready to book a flight from Montana to Washington, D.C. right now. Can momondo alert me if prices change?

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