HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington, D.C.

$175+ Cheap flights from Billings (BIL) 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — WAS
Aug 6 — Aug 131
Thu 8/6
Thu 8/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billings 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 Billings to Washington, D.C.

Cheapest flights from Billings to Washington, D.C.
Explore the most affordable flight options available from Billings to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 7, 2026.

This Delta deal was found by Cheapflights users on 7/6. 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 8/156:24 pm
BIL
-
BWI
1 stop9h 56m
Delta
Tue 8/257:17 pm
BWI
-
BIL
1 stop6h 13m
Delta
Deal found 7/6$349
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Fri 9/42:29 pm
BIL
-
IAD
1 stop6h 50m
United Airlines
Tue 9/82:43 pm
IAD
-
BIL
1 stop8h 17m
United Airlines
Deal found 7/3$349
This American Airlines deal was found by Cheapflights users on 7/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:22 pm
BIL
-
DCA
1 stop6h 37m
American Airlines
Sun 9/67:35 am
DCA
-
BIL
1 stop6h 15m
American Airlines
Deal found 7/2$349
This Delta deal was found by Cheapflights users on 7/6. 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 9/35:20 am
BIL
-
DCA
2 stops11h 23m
Delta
Sun 9/62:59 pm
DCA
-
BIL
1 stop7h 13m
Delta
Deal found 7/6$354
This Delta deal was found by Cheapflights users on 7/6. 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 9/16:26 am
BIL
-
IAD
2 stops11h 39m
Delta
Wed 9/95:15 pm
IAD
-
BIL
2 stops8h 00m
Delta
Deal found 7/6$359
This Delta deal was found by Cheapflights users on 7/6. 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 8/155:20 am
BIL
-
DCA
2 stops9h 37m
Delta
Tue 8/251:30 pm
DCA
-
BIL
2 stops12h 00m
Delta
Deal found 7/6$359
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Tue 9/15:07 am
BIL
-
IAD
1 stop6h 22m
United Airlines
Wed 9/92:43 pm
IAD
-
BIL
1 stop8h 17m
United Airlines
Deal found 7/6$369
This Delta deal was found by Cheapflights users on 7/6. 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 10/612:58 pm
BIL
-
IAD
1 stop8h 37m
Delta
Thu 10/227:00 am
IAD
-
BIL
1 stop7h 18m
Delta
Deal found 7/6$374
This Delta deal was found by Cheapflights users on 7/6. 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 7/305:20 am
BIL
-
DCA
1 stop9h 15m
Delta
Sun 9/62:59 pm
DCA
-
BIL
1 stop7h 13m
Delta
Deal found 7/6$374
This Delta deal was found by Cheapflights users on 7/6. 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 10/612:58 pm
BIL
-
IAD
1 stop8h 37m
Delta
Wed 10/2111:05 am
IAD
-
BIL
2 stops11h 02m
Delta
Deal found 7/6$379
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Fri 9/42:29 pm
BIL
-
IAD
1 stop6h 50m
United Airlines
Mon 9/72:43 pm
IAD
-
BIL
1 stop8h 17m
United Airlines
Deal found 7/3$381
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Wed 10/75:57 pm
BIL
-
IAD
1 stop9h 20m
United Airlines
Sat 10/105:27 pm
IAD
-
BIL
1 stop7h 24m
United Airlines
Deal found 7/2$383

Find flight deals from Billings to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(Delta)

One-way from

$175
(Delta)

Popular in

March

Cheapest in

December

Average price

$473
Provider with most accurate pricing for Billings Logan Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Billings Logan Intl-Washington, D.C. (WAS) flights.
Search Deals
From Billings Logan Intl to Washington, D.C. (WAS)
Search Deals
One-way flight from Billings Logan Intl to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($159 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings 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 July 7, 2026.
Use the filters below to find and compare flights from Billings to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BillingsBaltimore

BIL - BWI

BILBWI

Billings Logan Intl

Sat 8/15

6:24 pm-6:20 am

1 stop9h 56m

Baltimore/Washington

Tue 8/25

7:17 pm-11:30 pm

1 stop6h 13m

$349

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 10/7

7:32 pm-5:40 am

1 stop8h 08m

Washington, D.C. Dulles Intl

Sat 10/10

7:00 am-6:52 pm

1 stop13h 52m

$349

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Thu 9/3

5:20 am-6:43 pm

2 stops11h 23m

Washington, D.C. Reagan-National

Sun 9/6

2:59 pm-8:12 pm

1 stop7h 13m

$354

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Tue 10/27

6:00 am-6:05 pm

2 stops10h 05m

Washington, D.C. Reagan-National

Sat 10/31

3:00 pm-8:07 pm

1 stop7h 07m

$354

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Sat 8/15

5:20 am-4:57 pm

2 stops9h 37m

Washington, D.C. Reagan-National

Tue 8/25

1:30 pm-11:30 pm

2 stops12h 00m

$359

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Tue 10/6

12:58 pm-11:35 pm

1 stop8h 37m

Washington, D.C. Dulles Intl

Wed 10/21

7:00 am-12:18 pm

1 stop7h 18m

$374

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 10/7

5:57 pm-5:17 am

1 stop9h 20m

Washington, D.C. Dulles Intl

Sat 10/10

5:27 pm-10:51 pm

1 stop7h 24m

$383

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 10/7

7:32 pm-5:40 am

1 stop8h 08m

Washington, D.C. Dulles Intl

Tue 10/20

9:35 am-6:52 pm

1 stop11h 17m

$384

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 8/15

6:24 pm-9:20 am

2 stops12h 56m

Washington, D.C. Dulles Intl

Tue 8/25

6:49 pm-11:30 pm

1 stop6h 41m

$398
Quickest round-trip

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 7/30

4:10 pm-12:45 am

1 stop6h 35m

Washington, D.C. Dulles Intl

Sun 9/6

5:26 pm-10:07 pm

1 stop6h 41m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 40 resultsSorted by cheapest first
1
2
3
4

Compare providers for flights from Billings to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Billings to Washington, D.C. in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Billings-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billings-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billings-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Billings-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Billings to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Billings 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 Billings to Washington, D.C.
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated July 7, 2026.
Read through reviews of airlines operating flights from Billings to Washington, D.C., such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,944 reviews

Entertainment

7.1

Food

6.7

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,944 reviews
United Airlines
7.4
Good
9,944 reviews

Entertainment

7.1

Food

6.7

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Billings 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.

  • What airport do you fly from for flights from Billings to Washington, D.C.?

    Most people fly from Billings Logan Intl (BIL) if they book a flight from Billings to Washington, D.C.. On average, Billings Logan Intl has 0 outbound flights to Washington, D.C. per day from 3 airlines. Billings Logan Intl is conveniently located just 2.7 mi from Billings’s city center.

  • How long is the flight from Billings to Washington, D.C.?

    A quick flight from Billings to Washington, D.C. can take about 8h 08m. Delta provides one of the quickest options available for as low as $349. There are 1643 mi between Billings and Washington, D.C.. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Billings to Washington, D.C. round-trip?

    According to our current data, American Airlines ($328), United Airlines ($350), and Delta ($373) offers the cheapest pricing from Billings to Washington, D.C.. You may be able to fly from Billings to Washington, D.C. for 45% less than the average price by searching for these airlines.

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

    Most travelers choose Billings Logan Intl - Baltimore/Washington, Billings Logan Intl - Washington, D.C. Dulles Intl or Billings Logan Intl - Washington, D.C. Reagan-National when deciding on the best route from Billings to Washington, D.C..

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

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

  • How can I find direct flights from Billings 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 Billings to Washington, D.C..

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

    Yes. Cheapflights offers flight deals from Billings 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.

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
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Manassas
Falls Church
Fredericksburg
Hanover
Laurel
Silver Spring
Clinton
Hunt Valley
Cordova
Woodbridge

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 Billings to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Bozeman to Dulles Intl flights
Billings to Dulles Intl flights
Missoula to Reagan-National flights

Top 3 airlines flying from Billings to Washington, D.C.

Discover the top 3 airlines that operate flights from Billings 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 July 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$328Average$595FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$350Average$551FlexibilityNo cancel feeOn-time69%
DeltaCheapest$373Average$522FlexibilityNo cancel feeOn-timeN/A

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.