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

United Airlines, Alaska Airlines 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 73% 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.

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 4h 08m 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 09m. Keep in mind that layovers or delays could extend your travel time.

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

1 flights are operational daily from Montana to Washington, D.C. Dulles Intl Airport as of July 2026. The most popular departure time for this route is 12:00PM, with 71% of flights per day taking off in the afternoon.

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

Delta, Alaska Airlines, and United 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 July 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.

$142 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 July 2026, there are 7 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 29% of flights taking off on this day.

Discover deals from 900+ travel sites with momondo.

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.

10:00 am - 8:04 am

BIL

IAD

20h 04m

1 stop

8:59 am - 8:08 pm

IAD

BIL

13h 09m

1 stop

$251Multiple Airlines

Mon, Aug 17 - Mon, Aug 24

10:00 am - 8:04 am

BIL

IAD

20h 04m

1 stop

8:59 am - 8:08 pm

IAD

BIL

13h 09m

1 stop

$252Multiple Airlines

Mon, Aug 17 - Mon, Aug 24

1:13 pm - 11:35 pm

GTF

IAD

8h 22m

1 stop

7:00 am - 12:33 pm

IAD

GTF

7h 33m

1 stop

$338Delta

Tue, Oct 20 - Sat, Oct 24

2:30 pm - 11:19 pm

BZN

IAD

6h 49m

1 stop

8:15 am - 10:42 am

IAD

BZN

4h 27mnonstop

$339United Airlines

Fri, Aug 28 - Sun, Aug 30

4:32 pm - 12:32 am

BZN

IAD

6h 00m

1 stop

7:00 am - 2:13 pm

IAD

BZN

9h 13m

1 stop

$344United Airlines

Fri, Aug 21 - Sun, Aug 23

2:30 pm - 12:31 am

BZN

IAD

8h 01m

1 stop

7:00 am - 12:05 pm

IAD

BZN

7h 05m

1 stop

$349Delta

Sun, Nov 1 - Sat, Nov 7

6:26 am - 6:27 pm

BZN

IAD

10h 01m

1 stop

5:08 am - 12:05 pm

IAD

BZN

8h 57m

2 stops

$354American Airlines

Fri, Aug 28 - Sun, Aug 30

2:21 pm - 5:40 am

BZN

IAD

13h 19m

1 stop

7:47 pm - 8:45 pm

IAD

BZN

26h 58m

1 stop

$369Alaska Airlines

Wed, Sep 23 - Tue, Sep 29

5:15 pm - 5:40 am

GTF

IAD

10h 25m

1 stop

9:35 am - 4:35 pm

IAD

GTF

9h 00m

1 stop

$373Alaska Airlines

Tue, Oct 20 - Sat, Oct 24

1:25 pm - 10:52 pm

MSO

IAD

7h 27m

1 stop

6:09 am - 12:35 pm

IAD

MSO

8h 26m

1 stop

$384American Airlines

Thu, Sep 3 - Mon, Sep 7

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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

United Airlines

Aug 28

BZN2:30 pmBozeman Gallatin Field

6h 49m

1 stop

IAD11:19 pmWashington, D.C. Dulles Intl

Aug 30

IAD8:15 amWashington, D.C. Dulles Intl

4h 27m

BZN10:42 amBozeman Gallatin Field

$339

United Airlines

Aug 21

BZN4:32 pmBozeman Gallatin Field

6h 00m

1 stop

IAD12:32 amWashington, D.C. Dulles Intl

Aug 23

IAD7:00 amWashington, D.C. Dulles Intl

9h 13m

1 stop

BZN2:13 pmBozeman Gallatin Field

$344

United Airlines

Aug 13

BZN4:30 pmBozeman Gallatin Field

6h 14m

1 stop

IAD12:44 amWashington, D.C. Dulles Intl

Aug 23

IAD8:15 amWashington, D.C. Dulles Intl

4h 27m

BZN10:42 amBozeman Gallatin Field

$366

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

Oct 20

GTF1:13 pmGreat Falls

8h 22m

1 stop

IAD11:35 pmWashington, D.C. Dulles Intl

Oct 24

IAD7:00 amWashington, D.C. Dulles Intl

7h 33m

1 stop

GTF12:33 pmGreat Falls

$338

Delta

Nov 1

BZN2:30 pmBozeman Gallatin Field

8h 01m

1 stop

IAD12:31 amWashington, D.C. Dulles Intl

Nov 7

IAD7:00 amWashington, D.C. Dulles Intl

7h 05m

1 stop

BZN12:05 pmBozeman Gallatin Field

$349

Delta

Aug 29

BIL6:26 amBillings Logan Intl

5h 09m

1 stop

IAD1:35 pmWashington, D.C. Dulles Intl

Sep 9

IAD5:15 pmWashington, D.C. Dulles Intl

8h 00m

2 stops

BIL11:15 pmBillings Logan Intl

$354

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

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Mon 8/17

10:00 am-8:04 am

1 stop20h 04m

Washington, D.C. Dulles Intl

Mon 8/24

8:59 am-8:08 pm

1 stop13h 09m

$251

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Mon 8/17

10:00 am-8:04 am

1 stop20h 04m

Washington, D.C. Dulles Intl

Mon 8/24

8:59 am-8:08 pm

1 stop13h 09m

$252

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Tue 10/20

1:13 pm-11:35 pm

1 stop8h 22m

Washington, D.C. Dulles Intl

Sat 10/24

7:00 am-12:33 pm

1 stop7h 33m

$338

Quickest round-trip

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Fri 8/28

2:30 pm-11:19 pm

1 stop6h 49m

Washington, D.C. Dulles Intl

Sun 8/30

8:15 am-10:42 am

Nonstop4h 27m

$339

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Fri 8/21

4:32 pm-12:32 am

1 stop6h 00m

Washington, D.C. Dulles Intl

Sun 8/23

7:00 am-2:13 pm

1 stop9h 13m

$344

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sun 11/1

2:30 pm-12:31 am

1 stop8h 01m

Washington, D.C. Dulles Intl

Sat 11/7

7:00 am-12:05 pm

1 stop7h 05m

$349

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Fri 8/28

6:26 am-6:27 pm

1 stop10h 01m

Washington, D.C. Dulles Intl

Sun 8/30

5:08 am-12:05 pm

2 stops8h 57m

$354

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Wed 9/23

2:21 pm-5:40 am

1 stop13h 19m

Washington, D.C. Dulles Intl

Tue 9/29

7:47 pm-8:45 pm

1 stop26h 58m

$369

Great FallsWashington, D.C.

GTF - IAD

GTFIAD

Great Falls

Tue 10/20

5:15 pm-5:40 am

1 stop10h 25m

Washington, D.C. Dulles Intl

Sat 10/24

9:35 am-4:35 pm

1 stop9h 00m

$373

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Thu 9/3

1:25 pm-10:52 pm

1 stop7h 27m

Washington, D.C. Dulles Intl

Mon 9/7

6:09 am-12:35 pm

1 stop8h 26m

$384

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 $230. 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 $241.

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 $672. 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 $649 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 $844 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?

No. A direct flight is the cheapest option for a flight between Montana 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

Fastest flight time	4h 08m
Direct flights	Mon and Sun

The fastest flight from Montana to Washington, D.C. Dulles Intl Airport takes 4h 08m

Direct flights go from Montana to Washington, D.C. Dulles Intl Airport on Monday and Sunday. The only airline offering direct flights is United Airlines.

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 July 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 737-800, representing 50.00% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 16.67%, Airbus A319 at 16.67%, and Boeing 757 at 16.67%.

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 $241	Free Cancellation	Rating 7.9 4,250 reviews	Search Southwest flights
United Airlines	PriceFrom $256	Free Cancellation	Rating 7.4 9,982 reviews	Search United Airlines flights
Delta	PriceFrom $277	Free Cancellation	Rating 7.8 8,463 reviews	Search Delta flights
Alaska Airlines	PriceFrom $384	Free Cancellation	Rating 7.9 12,655 reviews	Search Alaska Airlines flights

Alexandria

National Harbor

Arlington

Gettysburg

Winchester

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Colonial Beach

Towson

Manassas

Silver Spring

Sterling

Tysons

Springfield

Fairfax

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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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Cheap flights from Montana to Washington, D.C. from $142

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 8/13. 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

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

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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 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?

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 day?

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

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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