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Dulles Intl

$204+ 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
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
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 septiembre 11, 2025.

Round-trip from

$408
(Alaska Airlines)

One-way from

$204
(Hawaiian Airlines)

Popular in

October

Cheapest in

January

Average price

$758
From Billings Logan Intl to Washington, D.C. Dulles Intl
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One-way flight from Billings Logan Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 17% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/11. 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.
mié. 10/81:59 pmBIL - IAD
1 stop8h 24mAlaska Airlines
mié. 10/158:53 amIAD - BIL
1 stop11h 42mAlaska Airlines
Deal found 9/11$408
This United Airlines deal was found by Cheapflights users on 9/8. 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.
jue. 11/2010:45 amBIL - IAD
1 stop8h 36mUnited Airlines
lun. 11/243:59 pmIAD - BIL
1 stop8h 50mUnited Airlines
Deal found 9/8$409
This United Airlines deal was found by Cheapflights users on 9/9. 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.
lun. 10/62:30 pmBIL - IAD
1 stop6h 52mUnited Airlines
jue. 10/96:30 amIAD - BIL
1 stop6h 46mUnited Airlines
Deal found 9/9$420
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
mié. 10/16:00 amBIL - IAD
1 stop23h 33mAlaska Airlines
lun. 10/66:25 amIAD - BIL
1 stop19h 43mAlaska Airlines
Deal found 9/9$462
This United Airlines deal was found by Cheapflights users on 9/9. 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.
mié. 9/242:35 pmBIL - IAD
1 stop6h 42mUnited Airlines
dom. 9/286:30 amIAD - BIL
1 stop6h 46mUnited Airlines
Deal found 9/9$481
This United Airlines deal was found by Cheapflights users on 9/9. 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.
dom. 9/2811:58 amBIL - IAD
1 stop6h 57mUnited Airlines
sáb. 10/44:00 pmIAD - BIL
1 stop6h 49mUnited Airlines
Deal found 9/9$504
This American Airlines deal was found by Cheapflights users on 9/9. 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.
mié. 9/241:59 pmBIL - IAD
1 stop6h 49mAmerican Airlines
dom. 9/286:25 amIAD - BIL
1 stop9h 04mAmerican Airlines
Deal found 9/9$506
This Delta deal was found by Cheapflights users on 9/8. 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.
jue. 11/206:25 amBIL - IAD
2 stops8h 39mDelta
lun. 11/246:59 pmIAD - BIL
1 stop6h 20mDelta
Deal found 9/8$511
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/812:20 pmBIL - IAD
2 stops18h 34mAmerican Airlines
mié. 10/158:09 amIAD - BIL
2 stops15h 44mAmerican Airlines
Deal found 9/10$517

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 septiembre 11, 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

mié. 10/8

1:59 pm-12:23 am

1 stop8h 24m

Washington, D.C. Dulles Intl

mié. 10/15

6:25 am-3:04 pm

1 stop10h 39m

$408

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

mié. 10/8

1:59 pm-12:23 am

1 stop8h 24m

Washington, D.C. Dulles Intl

mié. 10/15

6:25 am-3:04 pm

1 stop10h 39m

$408

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

lun. 10/6

2:30 pm-11:22 pm

1 stop6h 52m

Washington, D.C. Dulles Intl

jue. 10/9

6:30 am-11:16 am

1 stop6h 46m

$420

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

mié. 10/1

6:00 am-7:33 am

1 stop23h 33m

Washington, D.C. Dulles Intl

lun. 10/6

6:25 am-12:08 am

1 stop19h 43m

$462

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

mar. 3/10

6:15 am-1:55 pm

1 stop5h 40m

Washington, D.C. Dulles Intl

mié. 3/11

12:30 pm-10:50 pm

2 stops12h 20m

$468

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

lun. 10/6

7:15 pm-7:33 am

1 stop10h 18m

$204

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

lun. 10/6

2:30 pm-11:22 pm

1 stop6h 52m

$250

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

lun. 10/6

3:44 pm-4:42 pm

2 stops22h 58m

$254

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

lun. 10/6

12:20 pm-11:53 pm

2 stops9h 33m

$266

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

dom. 11/23

6:00 am-5:34 pm

1 stop9h 34m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 14 results
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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 septiembre 11, 2025.
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
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 52m. 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 $373 on this airline. United Airlines is currently priced 32% 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 ($204), United Airlines ($250), and Alaska Airlines ($254).

  • 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 $292). Flying from Billings to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor

Browse thousands of different options on Cheapflights for your next trip

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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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$373Average$619FlexibilityNo cancel feeOn-time69%

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