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Dulles Intl

$194+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — IAD
May 3 — May 101
Sat 5/3
Sat 5/10
1 adult, Economy
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Cheap 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 April 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$361
(United Airlines)

One-way from

$194
(Hawaiian Airlines)

Popular in

July

Cheapest in

June

Average price

$644
Provider with most accurate pricing for Billings Logan Intl-Washington, D.C. Dulles Intl flight deals.
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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. 6% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 28, 2025.

This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/284:16 pmBIL - IAD
1 stop6h 18mUnited Airlines
Wed 6/46:35 amIAD - BIL
1 stop8h 42mUnited Airlines
Deal found 4/26$361
This Delta deal was found by Cheapflights users on 4/27. 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 5/286:23 amBIL - IAD
2 stops13h 11mDelta
Wed 6/46:43 pmIAD - BIL
1 stop6h 15mDelta
Deal found 4/27$366
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/12:03 pmBIL - IAD
1 stop7h 56mHawaiian Airlines
Tue 7/86:30 amIAD - BIL
1 stop10h 35mHawaiian Airlines
Deal found 4/28$388
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 7/16:00 amBIL - IAD
2 stops11h 44mAmerican Airlines
Tue 7/81:06 pmIAD - BIL
2 stops12h 01mAmerican Airlines
Deal found 4/28$399
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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.
Wed 5/286:05 amBIL - IAD
1 stop9h 10mAlaska Airlines
Wed 6/46:30 amIAD - BIL
1 stop19h 29mAlaska Airlines
Deal found 4/27$416

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 April 28, 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

Wed 5/28

4:16 pm-12:34 am

1 stop6h 18m

Washington, D.C. Dulles Intl

Wed 6/4

6:35 am-1:17 pm

1 stop8h 42m

$361

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 5/28

6:23 am-9:34 pm

2 stops13h 11m

Washington, D.C. Dulles Intl

Wed 6/4

6:43 pm-10:58 pm

1 stop6h 15m

$366

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Tue 7/1

2:03 pm-11:59 pm

1 stop7h 56m

Washington, D.C. Dulles Intl

Tue 7/8

6:30 am-3:05 pm

1 stop10h 35m

$388

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Tue 7/1

6:00 am-7:44 pm

2 stops11h 44m

Washington, D.C. Dulles Intl

Tue 7/8

1:06 pm-11:07 pm

2 stops12h 01m

$399

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 5/28

6:05 am-5:15 pm

1 stop9h 10m

Washington, D.C. Dulles Intl

Wed 6/4

6:30 am-11:59 pm

1 stop19h 29m

$416

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Mon 10/6

7:15 pm-5:55 am

1 stop8h 40m

$194

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Tue 6/24

6:22 am-5:35 pm

1 stop9h 13m

$195

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Tue 6/24

6:26 pm-9:00 am

2 stops12h 34m

$200

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Mon 10/6

7:15 pm-6:45 pm

2 stops21h 30m

$293

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Mon 10/6

7:00 am-10:29 pm

3 stops13h 29m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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*2 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 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.

Cheapflights Insights

Everything you need to know about your flight from Billings to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 April 28, 2025.
Read through reviews of airlines operating flights from Billings to Washington, D.C., such as Alaska Airlines, Delta and Hawaiian Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,949 reviews

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

  • What are the cheapest airlines flying 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 $361 on this airline. Additional options worth looking into are Delta and Alaska Airlines, starting at $366 and $388 round-trip. United Airlines is currently priced 41% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Billings to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airlines for a one-way flight from Billings to Washington, D.C. Dulles Intl Airport are Hawaiian Airlines ($194), American Airlines ($195), and Delta ($200).

  • 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.

  • What is the cheapest month to book a flight from Billings to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Billings to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Billings to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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

Traveling to a place near Billings?

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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 April 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$373Average$758FlexibilityNo cancel feeOn-time69%

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