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Washington, D.C.

$120+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — WAS
Sep 2 — Sep 91
Wed 9/2
Wed 9/9
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 August 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:00 pm
BIL
-
IAD
1 stop14h 04m
Multiple Airlines
Mon 8/318:59 am
IAD
-
BIL
1 stop14h 08m
Multiple Airlines
Deal found 7/31$295
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 9/511:35 am
BZN
-
IAD
1 stop7h 53m
United Airlines
Sun 9/68:15 am
IAD
-
BZN
Nonstop4h 27m
United Airlines
Deal found 8/1$349
This Priceline deal was found by Cheapflights users on 7/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:09 pm
BZN
-
DCA
1 stop8h 50m
Multiple Airlines
Sun 9/610:59 am
DCA
-
BZN
1 stop11h 46m
Multiple Airlines
Deal found 7/30$352
This Delta deal was found by Cheapflights users on 7/31. 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 9/36:26 am
BIL
-
BWI
1 stop5h 31m
Delta
Sun 9/62:57 pm
BWI
-
BIL
1 stop7h 15m
Delta
Deal found 7/31$359
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Thu 10/2212:26 pm
FCA
-
BWI
1 stop6h 36m
United Airlines
Thu 10/294:19 pm
BWI
-
FCA
1 stop7h 32m
United Airlines
Deal found 8/1$359
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Thu 9/1011:40 am
BZN
-
IAD
1 stop7h 48m
United Airlines
Sun 9/136:15 am
IAD
-
BZN
1 stop7h 55m
United Airlines
Deal found 8/1$359
This American Airlines deal was found by Cheapflights users on 7/29. 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 11/71:23 pm
BIL
-
IAD
1 stop7h 56m
American Airlines
Sat 11/147:18 am
IAD
-
BIL
1 stop7h 35m
American Airlines
Deal found 7/29$359
This Delta deal was found by Cheapflights users on 8/2. 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.
Tue 9/16:19 am
BZN
-
DCA
1 stop5h 29m
Delta
Tue 9/86:59 pm
DCA
-
BZN
1 stop6h 20m
Delta
Deal found 8/2$359
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Thu 9/31:25 pm
MSO
-
DCA
1 stop8h 33m
American Airlines
Mon 9/76:59 am
DCA
-
MSO
1 stop7h 36m
American Airlines
Deal found 7/29$359
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/237:29 pm
BIL
-
IAD
1 stop8h 11m
Alaska Airlines
Tue 9/297:00 am
IAD
-
BIL
1 stop13h 49m
Alaska Airlines
Deal found 7/31$361
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/1211:43 am
BIL
-
DCA
1 stop9h 11m
United Airlines
Tue 9/154:20 pm
DCA
-
BIL
1 stop6h 40m
United Airlines
Deal found 7/31$361
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/512:12 pm
BZN
-
IAD
1 stop7h 41m
American Airlines
Sun 9/66:33 am
IAD
-
BZN
2 stops10h 52m
American Airlines
Deal found 7/30$364

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 August 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$295
(Kiwi.com)

One-way from

$120
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$404

Good one-way deal

$431 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. 3% potential increase in price ($13 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 August 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 August 3, 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

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Thu 9/10

11:40 am-9:28 pm

1 stop7h 48m

Washington, D.C. Dulles Intl

Sun 9/13

8:15 am-10:42 am

Nonstop4h 27m

$349

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Sat 9/5

12:09 pm-10:59 pm

1 stop8h 50m

Washington, D.C. Reagan-National

Sun 9/6

10:59 am-8:45 pm

1 stop11h 46m

$352

BillingsBaltimore

BIL - BWI

BILBWI

Billings Logan Intl

Sat 9/12

6:33 pm-6:18 am

1 stop9h 45m

Baltimore/Washington

Tue 9/15

7:15 pm-11:15 pm

1 stop6h 00m

$359

BillingsBaltimore

BIL - BWI

BILBWI

Billings Logan Intl

Wed 9/23

7:29 pm-6:30 am

1 stop9h 01m

Baltimore/Washington

Tue 9/29

7:50 am-6:49 pm

1 stop12h 59m

$359

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Wed 1/13

6:40 am-4:26 pm

1 stop7h 46m

Washington, D.C. Dulles Intl

Sat 1/16

5:38 pm-11:59 pm

1 stop8h 21m

$359

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Tue 10/20

12:53 pm-9:14 pm

1 stop6h 21m

Washington, D.C. Reagan-National

Sat 10/24

1:15 pm-7:12 pm

1 stop7h 57m

$359

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

Tue 9/1

6:19 am-1:48 pm

1 stop5h 29m

Washington, D.C. Reagan-National

Tue 9/8

6:59 pm-11:19 pm

1 stop6h 20m

$359

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Sat 9/12

11:43 am-10:54 pm

1 stop9h 11m

Washington, D.C. Reagan-National

Tue 9/15

4:20 pm-9:00 pm

1 stop6h 40m

$361
Quickest round-trip

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sat 9/5

10:25 am-4:21 pm

Nonstop3h 56m

Washington, D.C. Dulles Intl

Sun 9/6

8:15 am-10:42 am

Nonstop4h 27m

$368

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Thu 9/3

5:20 am-4:44 pm

1 stop9h 24m

Washington, D.C. Reagan-National

Tue 9/8

6:59 pm-11:15 pm

1 stop6h 16m

$370

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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, January is the cheapest month in which you can book a flight from Montana to Washington, D.C. (average of $378). Flying from Montana to Washington, D.C. in April is currently the most expensive (average of $574). 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 August 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 7h 48m. United Airlines provides one of the quickest options available for as low as $349. Montana and Washington, D.C. are separated by a distance of 1768 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 Delta ($113), Southwest ($114), 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 Billings Logan Intl - Washington, D.C. Dulles Intl. You may also consider Billings Logan Intl - Baltimore/Washington or Billings Logan Intl - Washington, D.C. Reagan-National.

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

    Looking at all options, your cheapest flight can be booked for $328. While the most popular route (Billings Logan Intl - Washington, D.C. Dulles Intl) can be booked for $295 on average, our data indicates $631 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, January is the cheapest month in which you can book a flight from Montana to Washington, D.C. (average of $378). Flying from Montana to Washington, D.C. in April is currently the most expensive (average of $574). 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
Owings Mills
Arlington
Tysons
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Fredericksburg
Falls Church
Hanover
Laurel
Clinton
Oxon Hill
Hunt Valley
Woodbridge
Silver Spring
Largo

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 August 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$248Average$560FlexibilityNo cancel feeOn-time69%
DeltaCheapest$249Average$598FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$308Average$471FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$328Average$551FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$384Average$484FlexibilityNo cancel feeOn-time75%

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