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Dulles Intl

$176+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — IAD
maj 24 — maj 311
ndz. 5/24
ndz. 5/31
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 Kwiecień 24, 2026.

This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
śr. 5/277:21 pm
BIL
-
IAD
1 stop10h 13m
Alaska Airlines
sob. 5/306:00 am
IAD
-
BIL
1 stop9h 21m
Alaska Airlines
Deal found 4/20$351
This Delta deal was found by Cheapflights users on 4/19. 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.
sob. 8/155:45 am
BIL
-
IAD
2 stops10h 48m
Delta
wt. 8/256:40 pm
IAD
-
BIL
1 stop5h 57m
Delta
Deal found 4/19$356
This American Airlines deal was found by Cheapflights users on 4/20. 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.
śr. 9/3012:17 pm
BIL
-
IAD
2 stops9h 34m
American Airlines
sob. 10/312:25 pm
IAD
-
BIL
2 stops11h 57m
American Airlines
Deal found 4/20$361
This United Airlines deal was found by Cheapflights users on 4/23. 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.
pt. 5/222:25 pm
BIL
-
IAD
1 stop7h 07m
United Airlines
pt. 5/296:30 am
IAD
-
BIL
1 stop8h 52m
United Airlines
Deal found 4/23$369
This Delta deal was found by Cheapflights users on 4/20. 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.
pon. 8/246:25 pm
BIL
-
IAD
2 stops12h 45m
Delta
śr. 9/26:40 pm
IAD
-
BIL
1 stop5h 57m
Delta
Deal found 4/20$374
This Delta deal was found by Cheapflights users on 4/19. 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.
czw. 8/66:24 am
BIL
-
IAD
2 stops10h 02m
Delta
śr. 8/125:15 pm
IAD
-
BIL
2 stops7h 22m
Delta
Deal found 4/19$394
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
czw. 5/286:00 am
BIL
-
IAD
1 stop8h 35m
Alaska Airlines
sob. 5/306:00 am
IAD
-
BIL
1 stop9h 21m
Alaska Airlines
Deal found 4/23$405
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wt. 5/267:21 pm
BIL
-
IAD
1 stop10h 13m
Alaska Airlines
pt. 5/296:00 am
IAD
-
BIL
1 stop9h 21m
Alaska Airlines
Deal found 4/22$410
This United Airlines deal was found by Cheapflights users on 4/20. 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.
ndz. 5/314:10 pm
BIL
-
IAD
1 stop6h 35m
United Airlines
śr. 6/36:30 am
IAD
-
BIL
1 stop8h 52m
United Airlines
Deal found 4/20$415
This Delta deal was found by Cheapflights users on 4/23. 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.
śr. 5/276:19 pm
BIL
-
IAD
2 stops12h 57m
Delta
sob. 5/306:08 am
IAD
-
BIL
2 stops13h 31m
Delta
Deal found 4/23$417
This Delta deal was found by Cheapflights users on 4/23. 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.
wt. 5/196:30 am
BIL
-
IAD
2 stops10h 13m
Delta
pt. 6/56:58 pm
IAD
-
BIL
1 stop6h 16m
Delta
Deal found 4/23$419

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 Kwiecień 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$351
(Alaska Airlines)

One-way from

$176
(United Airlines)

Popular in

March

Cheapest in

October

Average price

$704
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. 24% potential increase in price ($179 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 April 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 Kwiecień 24, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

śr. 9/30

5:00 am-1:30 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

sob. 10/3

4:10 pm-9:00 pm

1 stop6h 50m

$351

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

sob. 8/15

5:45 am-6:33 pm

2 stops10h 48m

Washington, D.C. Dulles Intl

wt. 8/25

6:40 pm-10:37 pm

1 stop5h 57m

$356

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

pt. 10/9

7:17 pm-7:28 am

1 stop10h 11m

Washington, D.C. Dulles Intl

pon. 10/12

5:38 pm-12:08 am

1 stop8h 30m

$459

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

pt. 5/22

10:00 am-8:12 am

1 stop20h 12m

Washington, D.C. Dulles Intl

pt. 5/29

7:45 am-2:51 pm

2 stops33h 06m

$486

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

wt. 5/19

6:00 am-11:59 pm

1 stop15h 59m

Washington, D.C. Dulles Intl

pt. 6/5

6:00 am-11:33 pm

1 stop19h 33m

$492

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

czw. 7/2

1:45 pm-11:59 pm

1 stop8h 14m

Washington, D.C. Dulles Intl

wt. 7/14

6:03 am-1:05 pm

1 stop9h 02m

$510

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

wt. 6/2

6:30 am-9:24 pm

2 stops12h 54m

Washington, D.C. Dulles Intl

pt. 6/5

6:58 pm-11:14 pm

1 stop6h 16m

$518
Cheapest one-way

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

wt. 9/22

2:25 pm-11:24 pm

1 stop6h 59m

$176

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

wt. 5/12

11:34 am-10:56 pm

2 stops9h 22m

$205
Quickest one-way

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

śr. 8/26

4:10 pm-12:40 am

1 stop6h 30m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

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 April.
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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated Kwiecień 24, 2026.
See what other customers who have flown with United Airlines from Billings to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,643 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,643 reviews
United Airlines
7.4
Good
9,643 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 1 airline.

  • 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 30m. The distance from Billings to Washington, D.C. Dulles Intl Airport is about 1643 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Billings to Washington, D.C. Dulles Intl Airport round-trip?

    Our cheapest airline available from Billings to Washington, D.C. Dulles Intl Airport is United Airlines. Our recent data shows that you can find tickets from as low as $427 on this airline.

  • 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
Tysons
Owings Mills
Springfield
Arlington
Woodbridge
Silver Spring
Herndon
Rockville
Hyattsville
Fredericksburg
Hanover
Laurel
Manassas
Largo
Upper Marlboro
Waldorf
Bowie
Clinton
Hunt Valley

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.

Top airline flying from Billings to Dulles Intl

Discover the top airline that operate flights from Billings to Dulles Intl. 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 Kwiecień 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$427Average$533FlexibilityNo cancel feeOn-time69%

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