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Washington, D.C.

$119+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — WAS
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This Southwest deal was found by Cheapflights users on 2/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:30 pm
BZN
-
BWI
1 stop6h 00m
Southwest
Sat 2/285:50 pm
BWI
-
BZN
1 stop7h 00m
Southwest
Deal found 2/1$249
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Mon 2/232:41 pm
BZN
-
BWI
1 stop6h 44m
United Airlines
Sat 2/286:00 am
BWI
-
BZN
2 stops16h 25m
United Airlines
Deal found 2/1$254
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:33 am
BZN
-
DCA
1 stop8h 26m
Alaska Airlines
Mon 3/165:06 pm
DCA
-
BZN
1 stop22h 02m
Alaska Airlines
Deal found 2/3$263
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:33 am
BZN
-
DCA
1 stop8h 26m
Multiple Airlines
Sun 3/156:00 am
DCA
-
BZN
1 stop8h 11m
Multiple Airlines
Deal found 2/3$267
This Southwest deal was found by Cheapflights users on 2/3. 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.
Wed 3/116:30 am
BZN
-
BWI
1 stop10h 25m
Southwest
Sun 3/155:50 pm
BWI
-
BZN
1 stop8h 55m
Southwest
Deal found 2/3$274
This Delta deal was found by Cheapflights users on 2/1. 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.
Fri 3/62:00 pm
BZN
-
BWI
1 stop7h 47m
Delta
Tue 3/105:40 am
BWI
-
BZN
2 stops9h 26m
Delta
Deal found 2/1$282
This Delta deal was found by Cheapflights users on 2/3. 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 3/185:58 am
BZN
-
IAD
1 stop5h 34m
Delta
Tue 3/247:00 am
IAD
-
BZN
1 stop9h 36m
Delta
Deal found 2/3$289
This Delta deal was found by Cheapflights users on 2/2. 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 4/302:53 pm
BZN
-
DCA
1 stop6h 48m
Delta
Mon 5/42:55 pm
DCA
-
BZN
1 stop7h 16m
Delta
Deal found 2/2$289
This Delta deal was found by Cheapflights users on 2/1. 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.
Tue 5/123:30 pm
MSO
-
BWI
1 stop6h 58m
Delta
Sat 8/157:00 pm
BWI
-
MSO
1 stop6h 47m
Delta
Deal found 2/1$293
This Delta deal was found by Cheapflights users on 2/1. 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.
Tue 5/123:30 pm
MSO
-
DCA
1 stop6h 00m
Delta
Wed 8/127:40 am
DCA
-
MSO
1 stop8h 57m
Delta
Deal found 2/1$293
This Delta deal was found by Cheapflights users on 2/2. 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 3/185:58 am
BZN
-
IAD
1 stop5h 34m
Delta
Mon 3/237:18 am
IAD
-
BZN
2 stops14h 56m
Delta
Deal found 2/2$294
This Alaska Airlines deal was found by Cheapflights users on 2/3. 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.
Tue 3/107:00 am
BZN
-
IAD
1 stop8h 20m
Alaska Airlines
Fri 3/136:20 pm
IAD
-
BZN
2 stops21h 48m
Alaska Airlines
Deal found 2/3$295

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$249
(American Airlines)

One-way from

$119
(United Airlines)

Popular in

August

Cheapest in

September

Average price

$358

Good round-trip deal

$657 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 ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 3, 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

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Fri 3/6

7:00 am-6:04 pm

1 stop9h 04m

Baltimore/Washington

Tue 3/10

6:52 am-12:38 pm

1 stop7h 46m

$249

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 3/11

2:43 pm-11:12 pm

1 stop6h 29m

Baltimore/Washington

Mon 3/16

4:03 pm-9:22 pm

1 stop7h 19m

$249

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Mon 2/23

3:30 pm-11:30 pm

1 stop6h 00m

Baltimore/Washington

Sat 2/28

5:50 pm-10:50 pm

1 stop7h 00m

$249

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Wed 3/11

11:33 am-9:59 pm

1 stop8h 26m

Washington, D.C. Reagan-National

Sun 3/15

6:00 am-12:11 pm

1 stop8h 11m

$267

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 3/11

6:30 am-6:55 pm

1 stop10h 25m

Baltimore/Washington

Sun 3/15

5:50 pm-12:45 am

1 stop8h 55m

$274

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Wed 3/18

5:58 am-1:32 pm

1 stop5h 34m

Washington, D.C. Dulles Intl

Tue 3/24

7:00 am-2:36 pm

1 stop9h 36m

$289

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Thu 4/30

1:45 pm-10:02 pm

1 stop6h 17m

Washington, D.C. Reagan-National

Mon 5/4

2:55 pm-8:11 pm

1 stop7h 16m

$289

MissoulaBaltimore

MSO - BWI

MSOBWI

Missoula Johnson-Bell Field

Wed 5/13

3:30 pm-12:28 am

1 stop6h 58m

Baltimore/Washington

Wed 8/12

7:00 pm-11:47 pm

1 stop6h 47m

$293

MissoulaBaltimore

MSO - BWI

MSOBWI

Missoula Johnson-Bell Field

Tue 5/12

3:30 pm-12:28 am

1 stop6h 58m

Baltimore/Washington

Wed 8/12

7:00 pm-11:47 pm

1 stop6h 47m

$293

MissoulaWashington, D.C.

MSO - DCA

MSODCA

Missoula Johnson-Bell Field

Wed 5/13

3:30 pm-11:28 pm

1 stop5h 58m

Washington, D.C. Reagan-National

Tue 8/11

7:40 am-2:37 pm

1 stop8h 57m

$293

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

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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, 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 February 3, 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. American Airlines provides one of the quickest options available for as low as $249. 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 ($133), 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 Bozeman Gallatin Field - Washington, D.C. Dulles Intl. You may also consider Missoula Johnson-Bell Field - Washington, D.C. Dulles Intl or Bozeman Gallatin 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 (Bozeman Gallatin Field - Washington, D.C. Dulles Intl) can be booked for $313 on average, our data indicates $718 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
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

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.
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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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$171Average$443FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$210Average$570FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$220Average$410FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$269Average$558FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$385Average$495FlexibilityNo cancel feeOn-time75%

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