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$144+ Cheap flights from Dulles Intl (IAD) to Billings (BIL)

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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BIL
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from Dulles Intl to Billings

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Billings (BIL). 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 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$326
(Delta)

One-way from

$144
(Alaska Airlines)

Popular in

July

Cheapest in

April

Average price

$566
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Billings Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Billings Logan Intl flights.
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From Washington, D.C. Dulles Intl to Billings Logan Intl
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One-way flight from Washington, D.C. Dulles Intl to Billings Logan Intl
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Highest demand for flights based on searches. 13% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Dulles Intl to Billings

Cheapest flights from Dulles Intl to Billings
Explore the most affordable flight options available from Dulles Intl to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This United Airlines deal was found by Cheapflights users on 1/13. 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.
Tue 10/275:15 pm
IAD
-
BIL
1 stop7h 26m
United Airlines
Sat 10/312:40 pm
BIL
-
IAD
1 stop6h 33m
United Airlines
Deal found 1/13$309
This Delta deal was found by Cheapflights users on 1/12. 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 3/1812:14 pm
IAD
-
BIL
2 stops12h 15m
Delta
Wed 4/86:25 am
BIL
-
IAD
1 stop5h 07m
Delta
Deal found 1/12$326
This United Airlines deal was found by Cheapflights users on 1/14. 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 8/296:20 am
IAD
-
BIL
1 stop7h 01m
United Airlines
Wed 9/92:40 pm
BIL
-
IAD
1 stop6h 33m
United Airlines
Deal found 1/14$334
This Alaska Airlines deal was found by Cheapflights users on 1/13. 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 4/17:00 am
IAD
-
BIL
1 stop18h 58m
Alaska Airlines
Thu 4/92:05 pm
BIL
-
IAD
1 stop13h 35m
Alaska Airlines
Deal found 1/13$343
This United Airlines deal was found by Cheapflights users on 1/14. 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 5/275:15 pm
IAD
-
BIL
1 stop7h 26m
United Airlines
Thu 6/42:40 pm
BIL
-
IAD
1 stop7h 52m
United Airlines
Deal found 1/14$344
This United Airlines deal was found by Cheapflights users on 1/14. 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 1/294:11 pm
IAD
-
BIL
1 stop7h 12m
United Airlines
Mon 2/210:52 am
BIL
-
IAD
1 stop6h 29m
United Airlines
Deal found 1/14$359
This Delta deal was found by Cheapflights users on 1/14. 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 1/292:15 pm
IAD
-
BIL
1 stop7h 09m
Delta
Mon 2/211:50 am
BIL
-
IAD
2 stops10h 34m
Delta
Deal found 1/14$364
This American Airlines deal was found by Cheapflights users on 1/13. 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.
Wed 4/16:00 am
IAD
-
BIL
1 stop9h 18m
American Airlines
Thu 4/91:51 pm
BIL
-
IAD
1 stop7h 37m
American Airlines
Deal found 1/13$375
This Expedia deal was found by Cheapflights users on 1/14. 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.
Wed 4/157:00 am
IAD
-
BIL
1 stop18h 58m
Alaska Airlines
Fri 4/172:05 pm
BIL
-
IAD
1 stop13h 35m
Alaska Airlines
Deal found 1/14$383
This Delta deal was found by Cheapflights users on 1/15. 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.
Fri 1/302:15 pm
IAD
-
BIL
1 stop7h 09m
Delta
Tue 2/36:10 am
BIL
-
IAD
1 stop5h 25m
Delta
Deal found 1/15$389
This Delta deal was found by Cheapflights users on 1/14. 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 8/295:15 pm
IAD
-
BIL
2 stops7h 22m
Delta
Wed 9/95:45 am
BIL
-
IAD
2 stops10h 13m
Delta
Deal found 1/14$390

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Billings 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 15, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Billings that are best for you.

Fly from

Dulles Intl

Fly to

Billings

Route

Depart

Return

Price

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 4/1

7:00 am-11:58 pm

1 stop18h 58m

Billings Logan Intl

Thu 4/9

2:05 pm-5:40 am

1 stop13h 35m

$343

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 5/27

5:15 pm-10:41 pm

1 stop7h 26m

Billings Logan Intl

Thu 6/4

2:40 pm-12:32 am

1 stop7h 52m

$344

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Thu 1/29

4:11 pm-9:23 pm

1 stop7h 12m

Billings Logan Intl

Mon 2/2

10:52 am-7:21 pm

1 stop6h 29m

$359

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Thu 1/29

2:15 pm-7:24 pm

1 stop7h 09m

Billings Logan Intl

Mon 2/2

11:50 am-12:24 am

2 stops10h 34m

$364

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 4/1

6:00 am-1:18 pm

1 stop9h 18m

Billings Logan Intl

Thu 4/9

1:51 pm-11:28 pm

1 stop7h 37m

$375

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 4/15

7:00 am-11:58 pm

1 stop18h 58m

Billings Logan Intl

Fri 4/17

2:05 pm-5:40 am

1 stop13h 35m

$383

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Fri 1/30

2:15 pm-7:24 pm

1 stop7h 09m

Billings Logan Intl

Tue 2/3

6:10 am-1:35 pm

1 stop5h 25m

$389

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 4/15

8:30 am-8:57 pm

2 stops14h 27m

Billings Logan Intl

Sat 4/18

2:35 pm-11:34 pm

1 stop6h 59m

$410

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 3/25

7:00 am-11:58 pm

1 stop18h 58m

$144

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 4/15

7:00 am-11:58 pm

1 stop18h 58m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 17 results
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Compare providers for flights from Dulles Intl to Billings

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 Dulles Intl to Billings in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 Washington, D.C. Dulles Intl Airport-Billings flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Billings flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Billings flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Billings flights, Cheapflights users trust eDreams the most. eDreams 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 Washington, D.C. Dulles Intl Airport-Billings 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 Dulles Intl to Billings

Have a flexible travel schedule? Discover the best time to fly to Billings from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Billings

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Billings?

Reviews of airlines servicing Billings

Get insights into the airlines that provide service to Billings. 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 Billings. Reviews last updated January 15, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Billings, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,163 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,163 reviews
United Airlines
7.4
Good
9,163 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Billings. 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 into for flights to Billings from 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 Billings from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Billings Logan Intl (BIL) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 1 airline.

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

    Airlines like Alaska Airlines, United Airlines, and Delta fly from Washington, D.C. Dulles Intl Airport to Billings in about 7h 09m. The time it takes to get you to your destination can typically vary by up to 11h 49m. The distance from Washington, D.C. Dulles Intl Airport to Billings is about 1643 mi. This flight may include one or multiple stops.

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

    Currently priced at $434, United Airlines will fly you from Washington, D.C. Dulles Intl Airport to Billings and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. United Airlines is priced at 15% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Billings 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

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Alternative routes for Dulles Intl to Billings

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Dulles Intl to Billings

Discover the top airline that operate flights from Dulles Intl to Billings. 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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$434Average$501FlexibilityNo cancel feeOn-time69%

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