HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington, D.C.

$125+ Cheap flights from Montana to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — WAS
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Montana to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Montana to Washington, D.C.

Cheapest flights from Montana to Washington, D.C.
Explore the most affordable flight options available from Montana to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:49 pm
FCA
-
IAD
1 stop6h 47m
Delta
Sat 4/186:00 am
IAD
-
FCA
1 stop9h 54m
Delta
Deal found 1/20$249
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/215:10 am
BZN
-
BWI
1 stop7h 15m
Southwest
Tue 3/35:10 pm
BWI
-
BZN
1 stop7h 05m
Southwest
Deal found 1/20$249
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/215:10 am
BZN
-
BWI
1 stop7h 15m
Southwest
Sun 3/16:30 am
BWI
-
BZN
1 stop10h 25m
Southwest
Deal found 1/20$255
This Alaska Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/187:00 am
BZN
-
BWI
1 stop8h 46m
Alaska Airlines
Wed 2/256:46 pm
BWI
-
BZN
1 stop18h 07m
Alaska Airlines
Deal found 1/20$269
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/72:35 pm
MSO
-
IAD
1 stop6h 45m
United Airlines
Sat 3/144:03 pm
IAD
-
MSO
1 stop7h 54m
United Airlines
Deal found 1/20$277
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/213:00 pm
BZN
-
IAD
Nonstop3h 59m
United Airlines
Tue 3/32:12 pm
IAD
-
BZN
1 stop9h 00m
United Airlines
Deal found 1/20$279
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:00 am
BZN
-
BWI
1 stop5h 54m
Delta
Wed 2/2511:45 am
BWI
-
BZN
2 stops12h 40m
Delta
Deal found 1/20$282
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:30 pm
BZN
-
BWI
1 stop9h 21m
Delta
Tue 4/146:00 am
BWI
-
BZN
1 stop9h 17m
Delta
Deal found 1/19$288
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:10 am
BZN
-
IAD
1 stop9h 13m
United Airlines
Wed 4/86:15 am
IAD
-
BZN
1 stop7h 16m
United Airlines
Deal found 1/20$289
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:00 am
BZN
-
DCA
1 stop6h 44m
American Airlines
Sun 3/16:30 am
DCA
-
BZN
1 stop8h 27m
American Airlines
Deal found 1/21$289
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:30 pm
BZN
-
BWI
1 stop9h 21m
Delta
Wed 4/1512:21 pm
BWI
-
BZN
2 stops9h 50m
Delta
Deal found 1/19$293
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:20 pm
BZN
-
IAD
1 stop8h 50m
Southwest
Fri 3/64:45 pm
IAD
-
BZN
1 stop8h 00m
Southwest
Deal found 1/20$299

Find flight deals from Montana to Washington, D.C.

Keep the following information in mind while searching for Montana to Washington, D.C. flight deals. Data was last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$249
(Delta)

One-way from

$125
(Delta)

Popular in

August

Cheapest in

September

Average price

$299

Good round-trip deal

$1,254 or less

Good one-way deal

$245 or less
Provider with most accurate pricing for Bozeman Gallatin Field-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Washington, D.C. (WAS) flights.
Search Deals
From Montana to Washington, D.C. (WAS)
Search Deals
One-way flight from Montana to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Montana to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Montana to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana to Washington, D.C. 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, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
Use the filters below to find and compare flights from Montana to Washington, D.C. that are best for you.

Fly from

Montana

Fly to

Washington, D.C.

Route

Depart

Return

Price

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Tue 4/14

2:49 pm-11:36 pm

1 stop6h 47m

Washington, D.C. Dulles Intl

Sat 4/18

6:00 am-1:54 pm

1 stop9h 54m

$249

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Sat 2/21

5:10 am-2:25 pm

1 stop7h 15m

Baltimore/Washington

Sun 3/1

6:30 am-2:55 pm

1 stop10h 25m

$255

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Tue 4/7

9:50 am-12:25 am

1 stop12h 35m

Baltimore/Washington

Tue 4/14

3:25 pm-12:15 am

1 stop10h 50m

$255

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 2/18

7:00 am-5:46 pm

1 stop8h 46m

Baltimore/Washington

Wed 2/25

6:46 pm-10:53 am

1 stop18h 07m

$269

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Sat 3/7

2:35 pm-11:20 pm

1 stop6h 45m

Washington, D.C. Dulles Intl

Sat 3/14

4:03 pm-9:57 pm

1 stop7h 54m

$277

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sat 2/21

3:00 pm-8:59 pm

Nonstop3h 59m

Washington, D.C. Dulles Intl

Tue 3/3

2:12 pm-9:12 pm

1 stop9h 00m

$279

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Sat 2/21

5:10 am-2:25 pm

1 stop7h 15m

Baltimore/Washington

Tue 3/3

2:40 pm-10:15 pm

2 stops9h 35m

$279

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 2/18

6:00 am-1:54 pm

1 stop5h 54m

Baltimore/Washington

Wed 2/25

11:45 am-10:25 pm

2 stops12h 40m

$282

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Thu 4/9

6:30 pm-5:51 am

1 stop9h 21m

Baltimore/Washington

Wed 4/15

6:00 am-1:34 pm

1 stop9h 34m

$288

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Thu 4/9

6:30 pm-5:51 am

1 stop9h 21m

Baltimore/Washington

Tue 4/14

6:00 am-1:17 pm

1 stop9h 17m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Montana to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Montana with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montana to Washington, D.C.

What is the cheapest month to book a flight from Montana to Washington, D.C.?

Currently, April is the cheapest month in which you can book a flight from Montana to Washington, D.C. (average of $158). Flying from Montana to Washington, D.C. in January is currently the most expensive (average of $277). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MT to WAS?

Find hourly flight availability from Montana to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2026.

When flying from Montana to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Montana to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montana to Washington, D.C.?

    A quick flight from Montana to Washington, D.C. can take about 6h 47m. Delta provides one of the quickest options available for as low as $249. Montana and Washington, D.C. are separated by a distance of 1928 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Montana to Washington, D.C. one-way?

    The cheapest airlines for a one-way flight from Montana to Washington, D.C. are Southwest ($85), Delta ($133), and American Airlines ($164).

  • What are the most popular routes from Montana to Washington, D.C.?

    The most popular route from Montana to Washington, D.C. is Billings Logan Intl - Washington, D.C. Dulles Intl. You may also consider Missoula Johnson-Bell Field - Washington, D.C. Dulles Intl or Missoula Johnson-Bell Field - Baltimore/Washington.

  • What are the cheapest flights from Montana to Washington, D.C.?

    Looking at all options, your cheapest flight can be booked for $148. While the most popular route (Billings Logan Intl - Washington, D.C. Dulles Intl) can be booked for $309 on average, our data indicates $819 when flying from Montana to Washington, D.C..

  • Can I find deals for flights from Montana to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Montana to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Washington, D.C..

  • Can I find deals for business class flights from Montana to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Montana to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montana to Washington, D.C.?

    Currently, April is the cheapest month in which you can book a flight from Montana to Washington, D.C. (average of $158). Flying from Montana to Washington, D.C. in January is currently the most expensive (average of $277). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Hanover
Herndon
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Montana to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Dulles Intl flights
Los Angeles to Reagan-National flights
O'Hare Intl to Dulles Intl flights
Boston to Dulles Intl flights
Boston to Reagan-National flights
O'Hare Intl to Reagan-National flights
Seattle to Reagan-National flights
San Francisco to Reagan-National flights
Hobby to Reagan-National flights
Los Angeles to Dulles Intl flights
Atlanta to Reagan-National flights
Dallas/Fort Worth to Reagan-National flights
San Francisco to Dulles Intl flights
Orlando to Dulles Intl flights
Seattle to Dulles Intl flights
Hobby to Dulles Intl flights
Atlanta to Dulles Intl flights
Tampa to Dulles Intl flights
Tampa to Reagan-National flights
Orlando to Reagan-National flights
Denver to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Denver to Reagan-National flights
George Bush Intcntl to Dulles Intl flights
Detroit to Dulles Intl flights
Austin to Dulles Intl flights
Midway to Dulles Intl flights
Sky Harbor Intl to Dulles Intl flights
LaGuardia to Reagan-National flights
Detroit to Reagan-National flights
Miami to Dulles Intl flights
Austin to Reagan-National flights
John F Kennedy Intl to Dulles Intl flights
Ontario to Dulles Intl flights
Minneapolis to Dulles Intl flights
Charlotte to Dulles Intl flights
Fort Lauderdale to Reagan-National flights
John F Kennedy Intl to Reagan-National flights
Providence to Dulles Intl flights
Miami to Reagan-National flights
San Diego to Dulles Intl flights
Ontario to Reagan-National flights
Sky Harbor Intl to Reagan-National flights
Newark to Dulles Intl flights
Nashville to Reagan-National flights
Midway to Reagan-National flights
Nashville to Dulles Intl flights
Minneapolis to Reagan-National flights
LaGuardia to Dulles Intl flights
Fort Lauderdale to Dulles Intl flights

Top 5 airlines flying from Montana to Washington, D.C.

Discover the top 5 airlines that operate flights from Montana to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$171Average$438FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$210Average$578FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$220Average$410FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$269Average$560FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$385Average$495FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.