HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Billings

$241+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BIL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Billings with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 September 11, 2025.

Round-trip from

$408
(Alaska Airlines)

One-way from

$291
(American Airlines)

Popular in

November

Cheapest in

April

Average price

$485
From Washington, D.C. Dulles Intl to Billings Logan Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Billings Logan Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 11, 2025.

This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:25 amIAD - BIL
1 stop10h 39mHawaiian Airlines
Tue 10/71:59 pmBIL - IAD
1 stop8h 24mHawaiian Airlines
Deal found 9/10$408
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:00 pmIAD - BIL
1 stop6h 49mUnited Airlines
Sat 10/411:58 amBIL - IAD
1 stop6h 57mUnited Airlines
Deal found 9/11$409
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/112:35 pmIAD - BIL
2 stops12h 00mDelta
Sat 10/46:25 amBIL - IAD
1 stop5h 05mDelta
Deal found 9/10$414
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.
Wed 10/16:09 pmIAD - BIL
1 stop22h 54mAlaska Airlines
Tue 10/76:00 amBIL - IAD
1 stop16h 23mAlaska Airlines
Deal found 9/9$442
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.
Fri 10/35:52 pmIAD - BIL
2 stops21h 27mAlaska Airlines
Mon 10/67:15 pmBIL - IAD
1 stop10h 18mAlaska Airlines
Deal found 9/11$456
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.
Thu 10/27:00 amIAD - BIL
1 stop10h 03mAlaska Airlines
Fri 10/33:43 pmBIL - IAD
2 stops13h 50mAlaska Airlines
Deal found 9/11$461
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.
Tue 11/186:04 amIAD - BIL
1 stop9h 26mAmerican Airlines
Sun 11/232:00 pmBIL - IAD
1 stop6h 41mAmerican Airlines
Deal found 9/10$465
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:59 pmIAD - BIL
1 stop6h 20mDelta
Sat 11/226:25 amBIL - IAD
1 stop5h 08mDelta
Deal found 9/11$473
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.
Wed 10/111:18 amIAD - BIL
2 stops12h 31mAmerican Airlines
Tue 10/76:42 amBIL - IAD
2 stops10h 12mAmerican Airlines
Deal found 9/9$475
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:30 amIAD - BIL
2 stops12h 43mUnited Airlines
Tue 10/75:54 pmBIL - IAD
1 stop9h 28mUnited Airlines
Deal found 9/10$481

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 September 11, 2025.
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

Thu 11/13

7:43 am-3:00 pm

1 stop9h 17m

Billings Logan Intl

Mon 11/17

2:00 pm-6:23 am

1 stop14h 23m

$408

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Sat 10/4

6:25 am-3:04 pm

1 stop10h 39m

Billings Logan Intl

Tue 10/7

1:59 pm-12:23 am

1 stop8h 24m

$408

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Thu 10/2

7:00 am-3:03 pm

1 stop10h 03m

Billings Logan Intl

Fri 10/3

7:18 pm-7:33 am

1 stop10h 15m

$408

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Fri 10/24

7:41 pm-3:04 pm

1 stop21h 23m

Billings Logan Intl

Sat 11/1

7:19 pm-7:23 am

1 stop10h 04m

$408

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Thu 10/2

4:00 pm-8:49 pm

1 stop6h 49m

Billings Logan Intl

Sat 10/4

11:58 am-8:55 pm

1 stop6h 57m

$409

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 10/1

12:35 pm-10:35 pm

2 stops12h 00m

Billings Logan Intl

Sat 10/4

6:25 am-1:30 pm

1 stop5h 05m

$414

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 10/1

6:09 pm-3:03 pm

1 stop22h 54m

Billings Logan Intl

Tue 10/7

6:00 am-12:23 am

1 stop16h 23m

$442

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Tue 11/18

6:13 pm-3:00 pm

1 stop22h 47m

Billings Logan Intl

Sun 11/23

6:00 am-6:18 am

1 stop22h 18m

$442

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Wed 10/1

6:09 pm-6:38 pm

1 stop26h 29m

Billings Logan Intl

Sat 10/4

6:00 am-12:23 am

1 stop16h 23m

$442

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Fri 10/3

5:52 pm-1:19 pm

2 stops21h 27m

Billings Logan Intl

Mon 10/6

7:15 pm-7:33 am

1 stop10h 18m

$456

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 16 results
1
2

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

What is the cheapest time of day to fly from IAD to BIL?

Find hourly flight availability from Dulles Intl to Billings. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Billings, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 5% versus a flight at noon.

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 September 11, 2025.
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
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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 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 and Hawaiian Airlines fly from Washington, D.C. Dulles Intl Airport to Billings in about 9h 17m. The time it takes to get you to your destination can typically vary by up to 1h 22m. 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 $451, 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 14% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $241 on United Airlines. Other airlines that offer cheap prices include Delta from $246 and American Airlines from $291 one-way.

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Billings (average of $396). Flying from Washington, D.C. Dulles Intl Airport to Billings in June is currently the most expensive (average of $510). 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

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.

Alternative routes for Dulles Intl to Billings

See prices for flight routes from nearby airports that may be better suited for you.
Baltimore to Bozeman flights
Dulles Intl to Bozeman flights
Reagan-National to Bozeman flights
Dulles Intl to Missoula flights
Dulles Intl to Great Falls flights
Dulles Intl to Kalispell flights
Reagan-National to Missoula flights
Baltimore to Kalispell flights
Reagan-National to Kalispell flights
Reagan-National to Great Falls flights
Baltimore to Billings flights
Dulles Intl to Helena flights
Baltimore to Missoula flights
Reagan-National to Billings flights
Reagan-National to Helena flights
Baltimore to Great Falls flights
Baltimore to Helena flights
Dulles Intl to West Yellowstone flights
Baltimore to West Yellowstone flights
Dulles Intl to Cody flights
Dulles Intl to Butte flights
Baltimore to Cody flights
Baltimore to Butte flights
Reagan-National to Cody flights
Reagan-National to West Yellowstone flights
Reagan-National to Butte flights
Dulles Intl to Sidney flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$451Average$523FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.