Big Sky

$103+ Cheap flights from Washington, D.C. (WAS) to Big Sky, MT

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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BZN
Mar 8 — Mar 151
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Cheapflights Tip: The best prices from Washington, D.C. to Big Sky are usually found in January or October, booked 62 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Washington, D.C. to Big Sky

Cheapest flights from Washington, D.C. to Big Sky
Explore the most affordable flight options available from Washington, D.C. to Big Sky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2026.

This American Airlines deal was found by Cheapflights users on 2/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/73:21 pm
DCA
-
BZN
1 stop8h 17m
American Airlines
Tue 3/107:00 am
BZN
-
DCA
1 stop6h 44m
American Airlines
Deal found 2/4$197
This American Airlines deal was found by Cheapflights users on 2/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:48 am
IAD
-
BZN
1 stop8h 52m
American Airlines
Wed 9/237:41 am
BZN
-
IAD
1 stop6h 38m
American Airlines
Deal found 2/4$197
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:30 am
DCA
-
BZN
1 stop9h 16m
American Airlines
Sat 3/77:00 am
BZN
-
DCA
1 stop6h 44m
American Airlines
Deal found 2/3$201
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:48 am
IAD
-
BZN
1 stop8h 52m
American Airlines
Tue 9/297:41 am
BZN
-
IAD
2 stops14h 10m
American Airlines
Deal found 2/3$202
This American Airlines deal was found by Cheapflights users on 2/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:43 pm
DCA
-
BZN
1 stop9h 55m
American Airlines
Thu 2/261:28 pm
BZN
-
DCA
1 stop8h 22m
American Airlines
Deal found 2/4$205
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:30 am
DCA
-
BZN
1 stop8h 27m
American Airlines
Fri 2/207:00 am
BZN
-
DCA
1 stop6h 44m
American Airlines
Deal found 2/3$231
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.
Fri 2/206:05 am
DCA
-
BZN
1 stop8h 48m
Delta
Thu 2/262:39 pm
BZN
-
DCA
1 stop6h 53m
Delta
Deal found 2/3$237
This Delta deal was found by Cheapflights users on 2/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:30 am
IAD
-
BZN
1 stop8h 50m
Delta
Tue 3/105:58 am
BZN
-
IAD
1 stop5h 34m
Delta
Deal found 2/4$237
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:11 pm
BWI
-
BZN
1 stop7h 07m
United Airlines
Tue 9/297:00 am
BZN
-
BWI
1 stop6h 06m
United Airlines
Deal found 2/3$244
This Southwest deal was found by Cheapflights users on 2/5. 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.
Sat 4/257:45 am
BWI
-
BZN
1 stop8h 30m
Southwest
Wed 4/299:50 am
BZN
-
BWI
1 stop9h 40m
Southwest
Deal found 2/5$249
This United Airlines deal was found by Cheapflights users on 2/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/76:13 am
BWI
-
BZN
2 stops15h 53m
United Airlines
Tue 3/1012:44 pm
BZN
-
BWI
1 stop6h 58m
United Airlines
Deal found 2/4$254
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.
Sat 2/143:10 pm
DCA
-
BZN
1 stop6h 58m
Delta
Thu 2/195:30 am
BZN
-
DCA
1 stop8h 30m
Delta
Deal found 2/3$257

Find flight deals from Washington, D.C. to Big Sky

Keep the following information in mind while searching for Washington, D.C. to Big Sky flight deals. Data was last updated February 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$197
(American Airlines)

One-way from

$103
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$419
Provider with most accurate pricing for Washington, D.C. (WAS)-Bozeman Gallatin Field flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Bozeman Gallatin Field flights.
From Washington, D.C. (WAS) to Big Sky
One-way flight from Washington, D.C. (WAS) to Big Sky
Highest demand for flights based on searches. 4% potential increase in price ($19 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Big Sky 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 6, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Big Sky that are best for you.

Fly from

Washington, D.C.

Fly to

Big Sky

Route

Depart

Return

Price

Washington, D.C.Bozeman

IAD - BZN

IADBZN

Washington, D.C. Dulles Intl

Wed 3/4

7:30 am-2:20 pm

1 stop8h 50m

Bozeman Gallatin Field

Tue 3/10

5:58 am-1:32 pm

1 stop5h 34m

$237

Washington, D.C.Bozeman

DCA - BZN

DCABZN

Washington, D.C. Reagan-National

Fri 2/20

6:05 am-12:53 pm

1 stop8h 48m

Bozeman Gallatin Field

Wed 2/25

6:00 am-6:59 pm

2 stops10h 59m

$242

Washington, D.C.Bozeman

DCA - BZN

DCABZN

Washington, D.C. Reagan-National

Mon 3/2

12:59 pm-10:25 pm

2 stops11h 26m

Bozeman Gallatin Field

Thu 3/5

2:39 pm-11:32 pm

1 stop6h 53m

$242

Washington, D.C.Bozeman

IAD - BZN

IADBZN

Washington, D.C. Dulles Intl

Sat 2/21

10:57 am-8:08 pm

2 stops11h 11m

Bozeman Gallatin Field

Wed 2/25

6:00 am-1:34 pm

1 stop5h 34m

$242

BaltimoreBozeman

BWI - BZN

BWIBZN

Baltimore/Washington

Sat 4/25

4:18 pm-9:32 pm

1 stop7h 14m

Bozeman Gallatin Field

Wed 4/29

2:40 pm-11:24 pm

1 stop6h 44m

$249

BaltimoreBozeman

BWI - BZN

BWIBZN

Baltimore/Washington

Wed 3/11

5:25 pm-12:10 am

1 stop8h 45m

Bozeman Gallatin Field

Tue 3/31

6:30 am-6:55 pm

1 stop10h 25m

$249

BaltimoreBozeman

BWI - BZN

BWIBZN

Baltimore/Washington

Tue 3/10

2:59 pm-8:14 pm

1 stop7h 15m

Bozeman Gallatin Field

Mon 3/30

2:01 pm-11:59 pm

1 stop7h 58m

$277

BaltimoreBozeman

BWI - BZN

BWIBZN

Baltimore/Washington

Mon 3/9

6:17 am-1:06 pm

1 stop8h 49m

Bozeman Gallatin Field

Mon 3/30

2:01 pm-11:59 pm

1 stop7h 58m

$277

BaltimoreBozeman

BWI - BZN

BWIBZN

Baltimore/Washington

Fri 5/29

7:00 am-4:36 pm

1 stop11h 36m

Bozeman Gallatin Field

Tue 6/9

5:16 pm-7:09 am

1 stop11h 53m

$279

BaltimoreBozeman

BWI - BZN

BWIBZN

Baltimore/Washington

Wed 3/4

11:45 am-10:25 pm

2 stops12h 40m

Bozeman Gallatin Field

Tue 3/10

6:30 pm-5:51 am

1 stop9h 21m

$282

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 55 results
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Best time to book a flight from Washington, D.C. to Big Sky

Have a flexible travel schedule? Discover the best time to fly to Big Sky from Washington, D.C. 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 Washington, D.C. to Big Sky

How far ahead should I book a flight from Washington, D.C. to Big Sky?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Big Sky. Price data was last updated on January 30, 2026.

Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Big Sky. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. to Big Sky?

Currently, June is the cheapest month in which you can book a flight from Washington, D.C. to Big Sky (average of $176). Flying from Washington, D.C. to Big Sky in March is currently the most expensive (average of $323). 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 WAS to BS1?

Find hourly flight availability from Washington, D.C. to Big Sky. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 6, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to Big Sky as you normally would.

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

Reviews of airlines servicing Big Sky

Get insights into the airlines that provide service to Big Sky. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Big Sky. Reviews last updated February 6, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Washington, D.C. to Big Sky have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Crew

8.5

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Crew

8.5

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Crew

8.5

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Crew

8.5

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Crew

8.5

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Big Sky. 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 Washington, D.C. to Big Sky?

    A quick flight from Washington, D.C. to Big Sky can take about 7h 14m. Delta provides one of the quickest options available for as low as $249. The distance between Washington, D.C. and Big Sky is about 1799 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Washington, D.C. to Big Sky one-way?

    $128 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Southwest and American Airlines, with prices starting from $144 and $148, respectively.

  • What are the most popular routes from Washington, D.C. to Big Sky?

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

    While on average a flight from Washington, D.C. to Big Sky is generally $410, our data shows the cheapest flight currently is $154. When looking at the most popular route, (Washington, D.C. Dulles Intl - Bozeman Gallatin Field), you can expect to pay $289 for that flight.

  • Can I find deals for flights from Washington, D.C. to Big Sky that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Big Sky flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Big Sky?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Big Sky.

  • Can I find deals for business class flights from Washington, D.C. to Big Sky?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Big Sky 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 Washington, D.C. to Big Sky?

    Currently, June is the cheapest month in which you can book a flight from Washington, D.C. to Big Sky (average of $176). Flying from Washington, D.C. to Big Sky in March is currently the most expensive (average of $323). 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

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Top 5 airlines flying from Washington, D.C. to Big Sky

Discover the top 5 airlines that operate flights from Washington, D.C. to Big Sky. 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 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$189Average$356FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$241Average$460FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$262Average$573FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$380FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$299Average$302FlexibilityNo cancel feeOn-time75%

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