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 84% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 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 Missoula to Washington, D.C. Dulles Intl Airport, which will take roughly 6h 09m. 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?

Delta, Alaska Airlines, and Southwest 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 April 2026, there are 3 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.

$136 Cheap Flights from Montana to Washington, D.C. Dulles Intl Airport in 2026

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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.

8:00 pm - 7:28 am

FCA

IAD

9h 28m

1 stop

7:00 am - 3:35 pm

IAD

FCA

10h 35m

1 stop

$334Alaska Airlines

Tue, Oct 6 - Tue, Oct 13

10:25 am - 4:30 pm

BZN

IAD

4h 05mnonstop

8:15 am - 3:22 pm

IAD

BZN

9h 07m

1 stop

$339United Airlines

Sat, Sep 5 - Tue, Sep 8

12:45 pm - 10:36 pm

BZN

IAD

7h 51m

1 stop

10:13 am - 3:13 pm

IAD

BZN

7h 00m

1 stop

$344United Airlines

Sat, Sep 5 - Tue, Sep 8

2:00 pm - 12:10 am

BZN

IAD

8h 10m

1 stop

6:00 am - 11:46 am

IAD

BZN

7h 46m

1 stop

$349Delta

Tue, Aug 18 - Sun, Aug 23

5:45 am - 6:33 pm

BZN

IAD

10h 48m

2 stops

7:10 am - 2:36 pm

IAD

BZN

9h 26m

1 stop

$354Delta

Wed, Aug 19 - Mon, Aug 24

6:35 pm - 9:16 am

BZN

IAD

12h 41m

2 stops

6:00 am - 2:48 pm

IAD

BZN

10h 48m

2 stops

$359Delta

Tue, Jun 2 - Tue, Jun 9

12:51 pm - 11:59 pm

FCA

IAD

9h 08m

1 stop

5:38 pm - 11:59 pm

IAD

FCA

8h 21m

1 stop

$359Alaska Airlines

Tue, Oct 6 - Tue, Oct 13

2:05 pm - 11:59 pm

MSO

IAD

7h 54m

1 stop

7:00 am - 3:17 pm

IAD

MSO

10h 17m

1 stop

$369Alaska Airlines

Tue, Sep 22 - Sat, Sep 26

12:17 pm - 11:51 pm

BIL

IAD

9h 34m

2 stops

6:24 am - 12:40 pm

IAD

BIL

8h 16m

1 stop

$399American Airlines

Wed, Sep 30 - Sat, Oct 3

12:42 pm - 12:13 am

BIL

IAD

9h 31m

2 stops

8:22 pm - 12:12 pm

IAD

BIL

17h 50m

2 stops

$434American Airlines

Thu, May 28 - Mon, Jun 1

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

Aug 18

BZN2:00 pmBozeman Gallatin Field

8h 10m

1 stop

IAD12:10 amWashington, D.C. Dulles Intl

Aug 25

IAD7:10 amWashington, D.C. Dulles Intl

9h 26m

1 stop

BZN2:36 pmBozeman Gallatin Field

$349

Delta

Aug 19

BZN5:45 amBozeman Gallatin Field

10h 48m

2 stops

IAD6:33 pmWashington, D.C. Dulles Intl

Aug 23

IAD6:00 amWashington, D.C. Dulles Intl

7h 46m

1 stop

BZN11:46 amBozeman Gallatin Field

$354

Delta

Jun 2

BZN6:35 pmBozeman Gallatin Field

12h 41m

2 stops

IAD9:16 amWashington, D.C. Dulles Intl

Jun 9

IAD6:00 amWashington, D.C. Dulles Intl

10h 48m

2 stops

BZN2:48 pmBozeman Gallatin Field

$359

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

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

American Airlines

Sep 30

BIL12:17 pmBillings Logan Intl

9h 34m

2 stops

IAD11:51 pmWashington, D.C. Dulles Intl

Oct 3

IAD6:24 amWashington, D.C. Dulles Intl

8h 16m

1 stop

BIL12:40 pmBillings Logan Intl

$399

American Airlines

May 27

BIL12:42 pmBillings Logan Intl

9h 31m

2 stops

IAD12:13 amWashington, D.C. Dulles Intl

May 30

IAD1:12 pmWashington, D.C. Dulles Intl

12h 03m

2 stops

BIL11:15 pmBillings Logan Intl

$404

American Airlines

Sep 5

BZN12:02 pmBozeman Gallatin Field

9h 57m

2 stops

IAD11:59 pmWashington, D.C. Dulles Intl

Sep 8

IAD2:46 pmWashington, D.C. Dulles Intl

7h 53m

1 stop

BZN8:39 pmBozeman Gallatin Field

$409

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

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Tue 10/6

8:00 pm-7:28 am

1 stop9h 28m

Washington, D.C. Dulles Intl

Tue 10/13

7:00 am-3:35 pm

1 stop10h 35m

$334

Quickest round-trip

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sat 9/5

10:25 am-4:30 pm

Nonstop4h 05m

Washington, D.C. Dulles Intl

Tue 9/8

8:15 am-3:22 pm

1 stop9h 07m

$339

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sat 9/5

12:45 pm-10:36 pm

1 stop7h 51m

Washington, D.C. Dulles Intl

Tue 9/8

10:13 am-3:13 pm

1 stop7h 00m

$344

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Tue 8/18

2:00 pm-12:10 am

1 stop8h 10m

Washington, D.C. Dulles Intl

Sun 8/23

6:00 am-11:46 am

1 stop7h 46m

$349

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Wed 8/19

5:45 am-6:33 pm

2 stops10h 48m

Washington, D.C. Dulles Intl

Mon 8/24

7:10 am-2:36 pm

1 stop9h 26m

$354

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Tue 6/2

6:35 pm-9:16 am

2 stops12h 41m

Washington, D.C. Dulles Intl

Tue 6/9

6:00 am-2:48 pm

2 stops10h 48m

$359

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Tue 10/6

12:51 pm-11:59 pm

1 stop9h 08m

Washington, D.C. Dulles Intl

Tue 10/13

5:38 pm-11:59 pm

1 stop8h 21m

$359

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Tue 9/22

2:05 pm-11:59 pm

1 stop7h 54m

Washington, D.C. Dulles Intl

Sat 9/26

7:00 am-3:17 pm

1 stop10h 17m

$369

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 9/30

12:17 pm-11:51 pm

2 stops9h 34m

Washington, D.C. Dulles Intl

Sat 10/3

6:24 am-12:40 pm

1 stop8h 16m

$399

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 5/28

12:42 pm-12:13 am

2 stops9h 31m

Washington, D.C. Dulles Intl

Mon 6/1

8:22 pm-12:12 pm

2 stops17h 50m

$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

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Other information

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 $844.

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 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 53% 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	$279
Fastest flight time	4h 08m
Direct flights	Mon and Sun

The best one-way flight to Washington, D.C. Dulles Intl Airport from Montana in the past 72 hours is $279. The best round-trip flight deal from Montana to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $571.

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. 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 April 2026, there are 3 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 30.00% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 20.00%, Airbus A319 at 20.00%, and Airbus A318/A319/A320/A321 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
Southwest	PriceFrom $241	Free Cancellation	Rating 8.0 4,331 reviews	Search Southwest flights
United Airlines	PriceFrom $256	Free Cancellation	Rating 7.4 9,587 reviews	Search United Airlines flights
Delta	PriceFrom $277	Free Cancellation	Rating 7.9 8,404 reviews	Search Delta flights

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Waldorf

Woodbridge

Laurel

Colonial Beach

Gaithersburg

Towson

Fredericksburg

Silver Spring

Rockville

Sterling

Manassas

Tysons

Linthicum Heights

Bethesda

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.

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

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 $136

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 5/18. 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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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

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

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

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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 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 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

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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