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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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — WAS
abr. 6 — abr. 131
lun. 4/6
lun. 4/13
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 marzo 7, 2026.

This Southwest deal was found by Cheapflights users on 3/3. 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.
vie. 4/174:20 pm
BZN
-
BWI
1 stop6h 05m
Southwest
mar. 4/217:20 am
BWI
-
BZN
1 stop9h 20m
Southwest
Deal found 3/3$249
This Southwest deal was found by Cheapflights users on 3/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/229:55 am
BZN
-
BWI
1 stop12h 30m
Southwest
mar. 4/287:20 am
BWI
-
BZN
1 stop9h 20m
Southwest
Deal found 3/2$254
This United Airlines deal was found by Cheapflights users on 3/5. 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.
jue. 10/228:30 am
FCA
-
IAD
1 stop6h 43m
United Airlines
mar. 10/278:15 am
IAD
-
FCA
1 stop7h 18m
United Airlines
Deal found 3/5$269
This United Airlines deal was found by Cheapflights users on 3/5. 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.
sáb. 4/182:40 pm
BZN
-
BWI
1 stop6h 44m
United Airlines
mié. 4/228:00 am
BWI
-
BZN
1 stop7h 34m
United Airlines
Deal found 3/5$269
This Southwest deal was found by Cheapflights users on 3/5. 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.
sáb. 4/187:30 am
BZN
-
BWI
2 stops10h 25m
Southwest
mié. 4/227:20 am
BWI
-
BZN
1 stop9h 20m
Southwest
Deal found 3/5$274
This Delta deal was found by Cheapflights users on 3/2. 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.
mar. 4/211:45 pm
BZN
-
BWI
1 stop7h 41m
Delta
mar. 4/286:00 am
BWI
-
BZN
1 stop9h 36m
Delta
Deal found 3/2$277
This United Airlines deal was found by Cheapflights users on 3/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/282:33 pm
FCA
-
IAD
1 stop6h 59m
United Airlines
lun. 6/16:30 am
IAD
-
FCA
1 stop9h 00m
United Airlines
Deal found 3/2$279
This Southwest deal was found by Cheapflights users on 3/3. 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.
vie. 4/104:20 pm
BZN
-
BWI
1 stop6h 05m
Southwest
lun. 4/137:40 am
BWI
-
BZN
1 stop10h 00m
Southwest
Deal found 3/3$279
This Delta deal was found by Cheapflights users on 3/2. 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.
mar. 4/211:45 pm
BZN
-
BWI
2 stops8h 53m
Delta
mié. 4/296:00 am
BWI
-
BZN
1 stop9h 36m
Delta
Deal found 3/2$282
This Southwest deal was found by Cheapflights users on 3/5. 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.
lun. 3/307:10 pm
BZN
-
BWI
1 stop8h 35m
Southwest
vie. 4/34:25 pm
BWI
-
BZN
2 stops8h 20m
Southwest
Deal found 3/5$288
This United Airlines deal was found by Cheapflights users on 3/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/292:25 pm
BZN
-
IAD
1 stop7h 34m
United Airlines
sáb. 4/46:00 am
IAD
-
BZN
1 stop8h 26m
United Airlines
Deal found 3/2$289
This Southwest deal was found by Cheapflights users on 3/4. 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.
vie. 4/244:20 pm
BZN
-
BWI
1 stop6h 05m
Southwest
dom. 4/267:30 am
BWI
-
BZN
1 stop10h 15m
Southwest
Deal found 3/4$289

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 marzo 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$249
(Southwest)

One-way from

$125
(United Airlines)

Popular in

August

Cheapest in

September

Average price

$462

Good one-way deal

$365 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 ($25 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 March 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 marzo 7, 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

dom. 3/29

2:25 pm-11:59 pm

1 stop7h 34m

Washington, D.C. Dulles Intl

dom. 4/5

2:21 pm-9:32 pm

1 stop9h 11m

$289

MissoulaBaltimore

MSO - BWI

MSOBWI

Missoula Johnson-Bell Field

vie. 4/17

2:38 pm-11:24 pm

1 stop6h 46m

Baltimore/Washington

sáb. 4/18

4:18 pm-9:30 pm

1 stop7h 12m

$307

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

mié. 5/6

3:20 pm-11:40 pm

1 stop6h 20m

Washington, D.C. Dulles Intl

lun. 5/11

5:55 pm-11:00 pm

1 stop7h 05m

$309

MissoulaWashington, D.C.

MSO - DCA

MSODCA

Missoula Johnson-Bell Field

vie. 4/17

6:15 am-2:59 pm

1 stop6h 44m

Washington, D.C. Reagan-National

sáb. 4/18

6:00 am-4:06 pm

2 stops12h 06m

$312

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

dom. 3/29

2:25 pm-11:59 pm

1 stop7h 34m

Washington, D.C. Reagan-National

dom. 4/5

6:30 am-11:29 am

1 stop6h 59m

$313

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

sáb. 4/18

1:45 pm-11:03 pm

2 stops7h 18m

Washington, D.C. Dulles Intl

mié. 4/22

6:00 am-1:36 pm

1 stop9h 36m

$314

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

sáb. 4/18

6:05 am-5:40 am

1 stop21h 35m

Washington, D.C. Dulles Intl

mar. 4/21

7:00 am-11:47 pm

1 stop18h 47m

$325

BozemanWashington, D.C.

BZN - DCA

BZNDCA

Bozeman Gallatin Field

vie. 5/8

12:35 pm-10:47 pm

1 stop8h 12m

Washington, D.C. Reagan-National

dom. 5/10

6:30 am-11:26 am

1 stop6h 56m

$329

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

mié. 5/6

11:23 am-12:09 am

1 stop10h 46m

Washington, D.C. Dulles Intl

mar. 5/12

6:47 pm-10:42 pm

2 stops29h 55m

$331

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

jue. 4/30

2:49 pm-11:32 pm

1 stop6h 43m

Washington, D.C. Dulles Intl

mar. 5/5

6:00 am-1:54 pm

1 stop9h 54m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

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, 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 $275). 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 marzo 7, 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 20m. United Airlines provides one of the quickest options available for as low as $309. 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 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 Bozeman Gallatin Field - Baltimore/Washington or Billings Logan Intl - 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 $114. While the most popular route (Bozeman Gallatin Field - Washington, D.C. Dulles Intl) can be booked for $309 on average, our data indicates $666 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 $275). 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
Arlington
Tysons
Owings Mills
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park

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 marzo 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$158Average$467FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$210Average$561FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$254Average$471FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$288Average$561FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$385Average$495FlexibilityNo cancel feeOn-time75%

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