$199 Cheap Flights from Washington (IAD) to Billings (BIL)

View $199 flight on Sun, Feb 1, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Billings Logan Intl. Airport (BIL)

Cheap Flights from Washington to Billings (IAD-BIL)

Prices were available within the past 7 days and start at $199 for one-way flights and $344 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Fri, Dec 5 - Thu, Dec 11
IAD
Washington
BIL
Billings
$344 Roundtrip, just found
$344
Roundtrip
just found
Select Hawaiian Airlines flight, departing Fri, Dec 5 from Washington to Billings, returning Thu, Dec 11, priced at $344 just found
Hawaiian Airlines
Thu, Dec 11 - Sun, Dec 14
IAD
Washington
BIL
Billings
$364 Roundtrip, just found
$364
Roundtrip
just found
Select Hawaiian Airlines flight, departing Thu, Dec 11 from Washington to Billings, returning Sun, Dec 14, priced at $364 just found
Hawaiian Airlines
Thu, Dec 11 - Wed, Dec 17
IAD
Washington
BIL
Billings
$366 Roundtrip, just found
$366
Roundtrip
just found
Select Hawaiian Airlines flight, departing Thu, Dec 11 from Washington to Billings, returning Wed, Dec 17, priced at $366 just found
Alaska Airlines
Fri, Dec 5 - Fri, Dec 12
IAD
Washington
BIL
Billings
$382 Roundtrip, found 1 day ago
$382
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Dec 5 from Washington to Billings, returning Fri, Dec 12, priced at $382 found 1 day ago
Alaska Airlines
Fri, Feb 13 - Tue, Feb 17
IAD
Washington
BIL
Billings
$383 Roundtrip, found 2 hours ago
$383
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Fri, Feb 13 from Washington to Billings, returning Tue, Feb 17, priced at $383 found 2 hours ago
Hawaiian Airlines
Fri, Dec 5 - Sun, Dec 7
IAD
Washington
BIL
Billings
$390 Roundtrip, found 5 hours ago
$390
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Fri, Dec 5 from Washington to Billings, returning Sun, Dec 7, priced at $390 found 5 hours ago
Alaska Airlines
Fri, Feb 13 - Tue, Feb 17
IAD
Washington
BIL
Billings
$393 Roundtrip, found 2 hours ago
$393
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Fri, Feb 13 from Washington to Billings, returning Tue, Feb 17, priced at $393 found 2 hours ago
Delta
Wed, Jan 7 - Tue, Jan 20
IAD
Washington
BIL
Billings
$396 Roundtrip, found 2 days ago
$396
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 7 from Washington to Billings, returning Tue, Jan 20, priced at $396 found 2 days ago
American Airlines
Tue, Apr 21 - Tue, Apr 28
IAD
Washington
BIL
Billings
$409 Roundtrip, found 4 days ago
$409
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Apr 21 from Washington to Billings, returning Tue, Apr 28, priced at $409 found 4 days ago
United
Mon, Dec 8 - Wed, Dec 10
IAD
Washington
BIL
Billings
$409 Roundtrip, found 5 hours ago
$409
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Dec 8 from Washington to Billings, returning Wed, Dec 10, priced at $409 found 5 hours ago

Alternative airports near Billings

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Logan Intl. BIL. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $455
BIL
Logan Intl.
CheapestClosest
Average driving time to city center5 min
Flights from $455
Flights from Washington (IAD) to Billings (BIL)
Origin airport
Washington Dulles Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$344
Distance
1644 mi

Washington to Billings Flights

The cheapest times to fly from Washington to Billings

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Billings are during the month of December. You can find some of the cheapest flights from Washington to Billings with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Billings

Sunday is one of the best days to book for cheap flights from Washington to Billings: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Billings

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Billings in 2025. You can also book with separate airlines for your outbound and return journeys, from $199 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Billings flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Billings airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL) cost?
Grab a cheap one-way flight from $199 or cheap return flight from $344 from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL)?
Traveling in December is a good way to save, as it's the cheapest month for flights between IAD and BIL. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from IAD to BIL. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL)?
You'll have to take a flight with a layover if you're traveling from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from IAD to BIL?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL)?
To avoid possible delays on the Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL) route, aim to travel before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL) last-minute?
Last-minute fares from IAD to BIL are typically more expensive. To secure the lowest prices, start searching for flights well in advance. That being said, if you're flexible with your travel dates, you may land a cheap ticket right before you leave.
Is it cheaper to book an IAD to BIL flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to BIL flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place will take the hassle out of planning your trip. Just secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BIL)?
In most cases, you can cancel or reschedule your IAD to BIL flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you want more details, head to our Customer Service portal.

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*Available to One Key members.