HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
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 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — WAS
May 31 — Jun 71
Sun 5/31
Sun 6/7
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 May 1, 2026.

This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/32:19 pm
BZN
-
IAD
1 stop8h 32m
Delta
Mon 6/86:55 pm
IAD
-
BZN
1 stop7h 03m
Delta
Deal found 4/30$241
This United Airlines deal was found by Cheapflights users on 4/27. 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.
Fri 5/222:33 pm
FCA
-
IAD
1 stop6h 59m
United Airlines
Sat 5/306:10 am
IAD
-
FCA
1 stop7h 19m
United Airlines
Deal found 4/27$309
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Fri 5/221:25 pm
FCA
-
IAD
2 stops8h 48m
American Airlines
Sat 5/306:14 am
IAD
-
FCA
1 stop9h 24m
American Airlines
Deal found 4/27$314
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Fri 5/2912:25 pm
FCA
-
IAD
1 stop8h 22m
American Airlines
Fri 6/56:19 am
IAD
-
FCA
1 stop10h 40m
American Airlines
Deal found 4/29$333
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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.
Sat 5/236:15 am
FCA
-
IAD
1 stop8h 23m
Alaska Airlines
Wed 5/275:38 pm
IAD
-
FCA
1 stop8h 20m
Alaska Airlines
Deal found 4/27$334
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:45 am
FCA
-
IAD
1 stop6h 41m
United Airlines
Tue 10/272:25 pm
IAD
-
FCA
1 stop9h 05m
United Airlines
Deal found 4/30$336
This United Airlines deal was found by Cheapflights users on 4/28. 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 6/38:00 am
BZN
-
IAD
1 stop9h 02m
United Airlines
Sun 6/78:15 am
IAD
-
BZN
Nonstop4h 34m
United Airlines
Deal found 4/28$339
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/222:33 pm
FCA
-
BWI
1 stop6h 57m
United Airlines
Mon 5/256:10 am
BWI
-
FCA
1 stop7h 19m
United Airlines
Deal found 4/29$349
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:25 pm
BIL
-
BWI
1 stop9h 38m
Delta
Tue 8/257:00 pm
BWI
-
BIL
1 stop5h 37m
Delta
Deal found 4/29$349
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Sun 5/244:44 pm
MSO
-
IAD
1 stop10h 04m
American Airlines
Sun 5/316:25 am
IAD
-
MSO
1 stop11h 49m
American Airlines
Deal found 4/30$349
This Delta deal was found by Cheapflights users on 4/26. 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 9/22:00 pm
BZN
-
IAD
1 stop8h 10m
Delta
Mon 9/77:10 am
IAD
-
BZN
1 stop9h 26m
Delta
Deal found 4/26$349
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:10 pm
BIL
-
IAD
1 stop6h 35m
United Airlines
Fri 6/56:30 am
IAD
-
BIL
1 stop8h 52m
United Airlines
Deal found 4/29$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 May 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$256
(Delta)

One-way from

$155
(Delta)

Popular in

March

Cheapest in

January

Average price

$439

Good round-trip deal

$571 or less

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. 15% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 1, 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

Wed 6/3

2:19 pm-12:51 am

1 stop8h 32m

Washington, D.C. Dulles Intl

Mon 6/8

6:55 pm-11:58 pm

1 stop7h 03m

$241

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Fri 5/22

2:33 pm-12:45 am

1 stop8h 12m

Washington, D.C. Dulles Intl

Mon 5/25

6:10 am-11:29 am

1 stop7h 19m

$309

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Thu 10/22

2:30 pm-12:32 am

1 stop8h 02m

Washington, D.C. Dulles Intl

Tue 10/27

2:25 pm-9:30 pm

1 stop9h 05m

$309

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Fri 5/22

1:25 pm-12:13 am

2 stops8h 48m

Washington, D.C. Dulles Intl

Sat 5/30

6:14 am-3:00 pm

1 stop10h 46m

$314

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Wed 10/21

6:33 am-4:26 pm

1 stop7h 53m

Washington, D.C. Dulles Intl

Sat 10/24

5:38 pm-11:59 pm

1 stop8h 21m

$334

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Sat 5/23

6:15 am-4:38 pm

1 stop8h 23m

Washington, D.C. Dulles Intl

Wed 5/27

5:38 pm-11:58 pm

1 stop8h 20m

$334

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Thu 6/11

11:27 am-12:44 am

2 stops11h 17m

Washington, D.C. Dulles Intl

Tue 6/16

5:29 pm-11:58 pm

2 stops8h 29m

$340

KalispellBaltimore

FCA - BWI

FCABWI

Kalispell Glacier Park

Fri 5/22

2:33 pm-11:30 pm

1 stop6h 57m

Baltimore/Washington

Mon 5/25

6:10 am-11:29 am

1 stop7h 19m

$349

KalispellBaltimore

FCA - BWI

FCABWI

Kalispell Glacier Park

Fri 5/29

2:30 pm-11:46 pm

1 stop7h 16m

Baltimore/Washington

Fri 6/5

6:17 am-1:33 pm

1 stop9h 16m

$349

KalispellBaltimore

FCA - BWI

FCABWI

Kalispell Glacier Park

Fri 5/22

2:30 pm-11:46 pm

1 stop7h 16m

Baltimore/Washington

Mon 5/25

6:17 am-1:33 pm

1 stop9h 16m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 60 resultsSorted by cheapest first
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, June is the cheapest month in which you can book a flight from Montana to Washington, D.C. (average of $133). 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.

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 8h 12m. Delta provides one of the quickest options available for as low as $309. 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 ($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 Billings Logan Intl - Washington, D.C. Dulles Intl. You may also consider Billings Logan Intl - Washington, D.C. Reagan-National or Bozeman Gallatin Field - Washington, D.C. Dulles Intl.

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

    Looking at all options, your cheapest flight can be booked for $264. While the most popular route (Billings Logan Intl - Washington, D.C. Dulles Intl) can be booked for $349 on average, our data indicates $510 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 $133). 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
Silver Spring
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Woodbridge
Hanover
Laurel
Largo
Upper Marlboro
Waldorf
Clinton
Hunt Valley
Cordova

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 Dulles Intl flights
Los Angeles to Reagan-National flights
San Francisco to Dulles Intl flights
Dallas/Fort Worth to Reagan-National flights
San Francisco to Reagan-National flights
Seattle to Dulles Intl flights
Seattle to Reagan-National flights
Atlanta to Dulles Intl flights
Atlanta to Reagan-National flights
Boston to Reagan-National flights
O'Hare Intl to Dulles Intl flights
Orlando to Dulles Intl flights
Hobby to Reagan-National flights
Denver to Dulles Intl flights
Hobby to Dulles Intl flights
O'Hare Intl to Reagan-National flights
Boston to Dulles Intl flights
Orlando to Reagan-National flights
George Bush Intcntl to Dulles Intl flights
Tampa to Dulles Intl flights
Sky Harbor Intl to Dulles Intl flights
San Diego to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Detroit to Dulles Intl flights
Ontario to Dulles Intl flights
Miami to Reagan-National flights
Fort Lauderdale to Dulles Intl flights
Midway to Dulles Intl flights
John F Kennedy Intl to Dulles Intl flights
LaGuardia to Dulles Intl flights
Denver to Reagan-National flights
Austin to Reagan-National flights
Minneapolis to Dulles Intl flights
Portland to Dulles Intl flights
Miami to Dulles Intl flights
John F Kennedy Intl to Reagan-National flights
Sky Harbor Intl to Reagan-National flights
Charlotte to Dulles Intl flights
LaGuardia to Reagan-National flights
Minneapolis to Reagan-National flights
Austin to Dulles Intl flights
Salt Lake City to Dulles Intl flights
Ontario to Reagan-National flights
Tampa to Reagan-National flights
Newark to Dulles Intl flights
San Jose to Dulles Intl flights
Newark to Reagan-National flights
San Diego to Reagan-National flights
Love Field to Reagan-National 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 May 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$158Average$520FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$241Average$407FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$248Average$567FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$553FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$384Average$484FlexibilityNo 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.
Site
Cookie settings©2026 Cheapflights