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Washington, D.C.

$155+ 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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — WAS
Jul 5 — Jul 121
Sun 7/5
Sun 7/12
1 adult, Economy
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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 June 5, 2026.

This Delta deal was found by Cheapflights users on 6/2. 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.
Sun 11/13:15 pm
BZN
-
BWI
1 stop6h 31m
Delta
Sat 11/76:00 am
BWI
-
BZN
1 stop9h 16m
Delta
Deal found 6/2$309
This United Airlines deal was found by Cheapflights users on 6/1. 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.
Tue 10/204:22 pm
BZN
-
BWI
2 stops12h 26m
United Airlines
Thu 10/298:15 am
BWI
-
BZN
1 stop7h 13m
United Airlines
Deal found 6/1$314
This Alaska Airlines deal was found by Cheapflights users on 6/1. 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 8/269:20 am
BZN
-
DCA
1 stop9h 40m
Alaska Airlines
Sat 8/2910:59 am
DCA
-
BZN
1 stop11h 46m
Alaska Airlines
Deal found 6/1$316
This Delta deal was found by Cheapflights users on 6/1. 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 7/27:30 pm
BZN
-
BWI
1 stop8h 19m
Delta
Sun 7/56:19 am
BWI
-
BZN
1 stop6h 03m
Delta
Deal found 6/1$334
This United Airlines deal was found by Cheapflights users on 6/5. 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.
Tue 8/254:30 pm
BZN
-
IAD
1 stop6h 14m
United Airlines
Sat 8/298:15 am
IAD
-
BZN
Nonstop4h 27m
United Airlines
Deal found 6/5$339
This Southwest deal was found by Cheapflights users on 6/5. 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.
Tue 8/256:55 am
BZN
-
BWI
1 stop7h 35m
Southwest
Sat 8/292:35 pm
BWI
-
BZN
2 stops8h 40m
Southwest
Deal found 6/5$345
This Delta deal was found by Cheapflights users on 6/2. 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.
Sat 8/156:33 pm
BIL
-
BWI
1 stop9h 47m
Delta
Tue 8/257:17 pm
BWI
-
BIL
1 stop6h 13m
Delta
Deal found 6/2$349
This Delta deal was found by Cheapflights users on 6/2. 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 8/261:12 pm
MSO
-
IAD
1 stop8h 27m
Delta
Mon 8/317:00 am
IAD
-
MSO
1 stop7h 32m
Delta
Deal found 6/2$349
This Delta deal was found by Cheapflights users on 6/2. 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.
Sun 11/13:15 pm
BZN
-
IAD
1 stop6h 18m
Delta
Sat 11/77:30 am
IAD
-
BZN
1 stop6h 34m
Delta
Deal found 6/2$349
This Delta deal was found by Cheapflights users on 6/2. 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 9/2412:57 pm
BIL
-
IAD
1 stop8h 25m
Delta
Mon 9/286:47 pm
IAD
-
BIL
1 stop6h 24m
Delta
Deal found 6/2$349
This Delta deal was found by Cheapflights users on 6/2. 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.
Mon 8/176:27 pm
MSO
-
BWI
1 stop9h 53m
Delta
Fri 8/287:17 pm
BWI
-
MSO
1 stop6h 30m
Delta
Deal found 6/2$349
This Delta deal was found by Cheapflights users on 6/2. 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 11/52:00 pm
BZN
-
DCA
1 stop7h 18m
Delta
Mon 11/96:50 pm
DCA
-
BZN
1 stop7h 08m
Delta
Deal found 6/2$349

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 June 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(Delta)

One-way from

$155
(Delta)

Popular in

May

Cheapest in

January

Average price

$324

Good one-way deal

$303 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. 10% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 June 5, 2026.
Use the filters below to find and compare flights from Montana to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Sun 11/1

3:15 pm-11:46 pm

1 stop6h 31m

Baltimore/Washington

Sat 11/7

6:00 am-1:16 pm

1 stop9h 16m

$309

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Tue 10/20

4:22 pm-6:48 am

2 stops12h 26m

Baltimore/Washington

Thu 10/29

8:15 am-1:28 pm

1 stop7h 13m

$314

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Wed 8/26

9:20 am-9:00 pm

1 stop9h 40m

Washington, D.C. Reagan-National

Sat 8/29

10:59 am-8:45 pm

1 stop11h 46m

$316
Quickest round-trip

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Tue 8/25

4:30 pm-12:44 am

1 stop6h 14m

Washington, D.C. Dulles Intl

Sat 8/29

8:15 am-10:42 am

Nonstop4h 27m

$339

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sun 11/1

3:15 pm-11:33 pm

1 stop6h 18m

Washington, D.C. Dulles Intl

Sat 11/7

7:30 am-12:04 pm

1 stop6h 34m

$349

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sat 10/24

7:25 pm-5:40 am

1 stop8h 15m

Washington, D.C. Dulles Intl

Tue 10/27

5:33 pm-11:59 pm

1 stop8h 26m

$349

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Thu 11/5

2:00 pm-12:20 am

1 stop8h 20m

Washington, D.C. Dulles Intl

Mon 11/9

6:00 am-1:16 pm

1 stop9h 16m

$349

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Thu 11/5

2:00 pm-11:18 pm

1 stop7h 18m

Washington, D.C. Reagan-National

Mon 11/9

6:50 pm-11:58 pm

1 stop7h 08m

$349

MissoulaWashington, D.C.

MSO - DCA

MSODCA

Missoula Johnson-Bell Field

Fri 8/28

5:30 am-4:44 pm

1 stop9h 14m

Washington, D.C. Reagan-National

Sun 8/30

6:59 pm-11:47 pm

1 stop6h 48m

$349

BillingsBaltimore

BIL - BWI

BILBWI

Billings Logan Intl

Sat 8/15

6:33 pm-6:20 am

1 stop9h 47m

Baltimore/Washington

Tue 8/25

10:25 am-10:25 pm

2 stops14h 00m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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, June is the cheapest month in which you can book a flight from Montana to Washington, D.C. (average of $171). Flying from Montana to Washington, D.C. in March is currently the most expensive (average of $329). 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 June 5, 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.

How much does it cost to fly round-trip from Montana to Washington, D.C.?

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 31m. Delta provides one of the quickest options available for as low as $309. Montana and Washington, D.C. are separated by a distance of 1799 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 ($113), and United 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 Missoula Johnson-Bell Field - Washington, D.C. Dulles Intl. You may also consider Bozeman Gallatin Field - Washington, D.C. Dulles Intl or Billings Logan Intl - Baltimore/Washington.

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

    Looking at all options, your cheapest flight can be booked for $303. While the most popular route (Missoula Johnson-Bell Field - Washington, D.C. Dulles Intl) can be booked for $449 on average, our data indicates $335 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, June is the cheapest month in which you can book a flight from Montana to Washington, D.C. (average of $171). Flying from Montana to Washington, D.C. in March is currently the most expensive (average of $329). 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
Tysons
Owings Mills
Springfield
Arlington
Reston
Rockville
Herndon
Fredericksburg
Hyattsville
Manassas
Hanover
Laurel
Falls Church
Waldorf
Silver Spring
Largo
Clinton
Hunt Valley
Cordova

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Montana to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$241Average$413FlexibilityNo cancel feeOn-time63%
DeltaCheapest$248Average$524FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$550FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$544FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$384Average$484FlexibilityNo cancel feeOn-time75%

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