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Dulles Intl

$276+ Cheap flights from Billings (BIL) to Dulles Intl (IAD)

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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — IAD
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Billings to Dulles Intl

Cheapest flights from Billings to Dulles Intl
Explore the most affordable flight options available from Billings to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/24. 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 2/262:35 pm
BIL
-
IAD
1 stop6h 44m
United Airlines
Tue 3/32:12 pm
IAD
-
BIL
1 stop9h 09m
United Airlines
Deal found 1/24$309
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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.
Fri 9/117:17 pm
BIL
-
IAD
1 stop10h 11m
Alaska Airlines
Tue 9/156:30 am
IAD
-
BIL
1 stop10h 38m
Alaska Airlines
Deal found 1/25$354
This Delta deal was found by Cheapflights users on 1/25. 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 2/266:20 am
BIL
-
IAD
1 stop5h 14m
Delta
Tue 3/312:35 pm
IAD
-
BIL
2 stops9h 04m
Delta
Deal found 1/25$399
This United Airlines deal was found by Cheapflights users on 1/25. 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 2/76:30 am
BIL
-
IAD
1 stop6h 42m
United Airlines
Tue 2/104:11 pm
IAD
-
BIL
1 stop7h 12m
United Airlines
Deal found 1/25$404
This Delta deal was found by Cheapflights users on 1/25. 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 2/75:15 am
BIL
-
IAD
2 stops11h 46m
Delta
Tue 2/102:15 pm
IAD
-
BIL
1 stop7h 09m
Delta
Deal found 1/25$409
This United Airlines deal was found by Cheapflights users on 1/24. 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 1/3110:52 am
BIL
-
IAD
1 stop8h 15m
United Airlines
Tue 2/32:24 pm
IAD
-
BIL
1 stop8h 59m
United Airlines
Deal found 1/24$449
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/296:54 am
BIL
-
IAD
2 stops14h 18m
American Airlines
Sun 2/16:00 am
IAD
-
BIL
1 stop9h 36m
American Airlines
Deal found 1/26$489
This United Airlines deal was found by Cheapflights users on 1/25. 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 7/154:15 pm
BIL
-
IAD
1 stop6h 17m
United Airlines
Mon 8/36:20 am
IAD
-
BIL
1 stop7h 01m
United Airlines
Deal found 1/25$494

Find flight deals from Billings to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to Dulles Intl (IAD). 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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(United Airlines)

One-way from

$276
(United Airlines)

Popular in

September

Cheapest in

May

Average price

$424
Provider with most accurate pricing for Billings Logan Intl-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Billings Logan Intl-Washington, D.C. Dulles Intl flights.
Search Deals
From Billings Logan Intl to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Billings Logan Intl to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings to Dulles Intl 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 January 26, 2026.
Use the filters below to find and compare flights from Billings to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Billings

Fly to

Dulles Intl

Route

Depart

Return

Price

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 2/26

2:35 pm-11:19 pm

1 stop6h 44m

Washington, D.C. Dulles Intl

Tue 3/3

2:12 pm-9:21 pm

1 stop9h 09m

$309

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 2/26

6:15 pm-9:13 am

2 stops12h 58m

Washington, D.C. Dulles Intl

Tue 3/3

2:17 pm-7:39 pm

1 stop7h 22m

$399

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 2/7

6:30 am-3:12 pm

1 stop6h 42m

Washington, D.C. Dulles Intl

Tue 2/10

4:11 pm-9:23 pm

1 stop7h 12m

$404

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 2/7

5:15 am-7:01 pm

2 stops11h 46m

Washington, D.C. Dulles Intl

Tue 2/10

2:15 pm-7:24 pm

1 stop7h 09m

$409

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 7/15

4:15 pm-12:32 am

1 stop6h 17m

Washington, D.C. Dulles Intl

Mon 8/3

6:20 am-11:21 am

1 stop7h 01m

$494

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Mon 2/9

2:45 pm-11:22 pm

1 stop6h 37m

Washington, D.C. Dulles Intl

Fri 2/13

2:12 pm-9:21 pm

1 stop9h 09m

$568

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 7/15

5:45 am-5:58 pm

2 stops10h 13m

Washington, D.C. Dulles Intl

Mon 8/3

6:40 pm-10:37 pm

1 stop5h 57m

$574

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sun 2/8

2:45 pm-11:22 pm

1 stop6h 37m

$276

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sun 3/15

2:04 pm-5:40 am

1 stop13h 36m

$416

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sun 2/8

2:02 pm-5:04 pm

2 stops25h 02m

$438

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Compare providers for flights from Billings to Dulles Intl

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 Dulles Intl in January.
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. Dulles Intl Airport 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. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billings-Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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 Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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.

Related info for your journey

Find useful and relevant information for your journey from Billings to Dulles Intl. 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. Dulles Intl?

    Located just 2.7 mi from the city center, Billings Logan Intl is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Billings. Booking flights from Billings Logan Intl (BIL) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 0 different airlines.

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

    Departing from Billings to Washington, D.C. Dulles Intl Airport will take you 6h 44m. The distance from Billings to Washington, D.C. Dulles Intl Airport is about 1643 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Billings to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Billings to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billings to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billings to Dulles Intl.

  • Can I find deals for business class flights from Billings to Dulles Intl?

    Yes. Cheapflights offers flight deals from Billings to Dulles Intl 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. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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