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Dulles Intl

$341+ 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 12/20. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — IAD
jan 11 — jan 181
dom 1/11
dom 1/18
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 dezembro 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. 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.
qui 12/256:35 amBIL - IAD
1 stop6h 59mUnited Airlines
seg 12/296:20 amIAD - BIL
1 stop17h 04mUnited Airlines
Deal found 12/10$823
This Delta deal was found by Cheapflights users on 12/10. 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.
qui 12/2511:52 amBIL - IAD
2 stops9h 00mDelta
seg 12/2912:32 pmIAD - BIL
2 stops12h 09mDelta
Deal found 12/10$1,429

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 dezembro 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$344
(Alaska Airlines)

One-way from

$341
(Delta)

Popular in

March

Cheapest in

February

Average price

$414
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. 1% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 dezembro 12, 2025.
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

qua 1/28

3:35 pm-4:26 pm

1 stop22h 51m

Washington, D.C. Dulles Intl

ter 2/3

6:04 pm-11:36 pm

1 stop31h 32m

$344

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

qua 3/4

6:20 am-1:35 pm

1 stop5h 15m

Washington, D.C. Dulles Intl

qua 3/18

2:07 pm-8:20 pm

1 stop8h 13m

$345

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

qui 1/29

2:02 pm-4:26 pm

1 stop24h 24m

Washington, D.C. Dulles Intl

dom 2/1

6:04 pm-11:36 pm

1 stop31h 32m

$364

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

qui 2/26

2:04 pm-5:20 pm

1 stop25h 16m

Washington, D.C. Dulles Intl

ter 3/3

7:05 am-2:52 pm

1 stop9h 47m

$390

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

sex 2/20

2:04 pm-5:20 pm

1 stop25h 16m

Washington, D.C. Dulles Intl

qua 2/25

7:05 am-11:38 pm

1 stop18h 33m

$390

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

qua 1/28

6:10 am-1:35 pm

1 stop5h 25m

Washington, D.C. Dulles Intl

ter 2/3

10:08 am-7:24 pm

2 stops11h 16m

$394

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

qua 1/28

6:10 am-1:35 pm

1 stop5h 25m

Washington, D.C. Dulles Intl

dom 2/1

2:15 pm-7:24 pm

1 stop7h 09m

$399

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

qui 2/26

1:53 pm-10:48 pm

1 stop6h 55m

Washington, D.C. Dulles Intl

ter 3/3

11:22 am-9:35 pm

2 stops12h 13m

$404

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

qua 2/18

6:20 am-1:35 pm

1 stop5h 15m

Washington, D.C. Dulles Intl

seg 2/23

12:38 pm-10:26 pm

2 stops11h 48m

$404

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

qui 2/26

6:20 am-1:35 pm

1 stop5h 15m

Washington, D.C. Dulles Intl

ter 3/3

12:38 pm-10:26 pm

2 stops11h 48m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 13 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Expedia the most. Expedia 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 5h 15m. 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
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

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