WAS - BIL

$251 Find Cheap Flights from Washington, D.C. to Billings

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Billings departing on 12/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Billings

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Billings, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Billings, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$409
American Airlines
Sun 2/15Fri 2/20
IAD - BIL • 1 stop
Cheapest one-way
$251
Delta
Wed 12/17
BWI - BIL • 1 stop
Top airlines
American Airlines
Cheapest • from $419 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
July
Cheapest • 20% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Billings!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Billings (WAS-BIL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Billings that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Billings

Sun, Feb 15 - Fri, Feb 20
American Airlines Logo
6:00 am - 1:23 pmIAD-BIL
9h 23m1 stop
American Airlines Logo
5:34 am - 4:31 pmBIL-IAD
8h 57m1 stop
$409American Airlines
Find Deal
Sun, Feb 15 - Fri, Feb 20
American Airlines Logo
2:06 pm - 11:01 pmIAD-BIL
10h 55m2 stops
American Airlines Logo
1:53 pm - 10:48 pmBIL-IAD
6h 55m1 stop
$414American Airlines
Find Deal
Sun, Feb 15 - Fri, Feb 20
American Airlines Logo
2:06 pm - 11:01 pmIAD-BIL
10h 55m2 stops
American Airlines Logo
7:00 am - 10:48 pmBIL-IAD
13h 48m2 stops
$419American Airlines
Find Deal
Sun, Feb 15 - Fri, Feb 20
American Airlines Logo
6:00 am - 1:23 pmBWI-BIL
9h 23m1 stop
American Airlines Logo
1:53 pm - 10:57 pmBIL-BWI
7h 04m1 stop
$421American Airlines
Find Deal
Fri, May 29 - Sat, Jun 6
Delta Logo
7:00 pm - 10:37 pmBWI-BIL
5h 37m1 stop
Delta Logo
6:25 pm - 6:03 amBIL-BWI
9h 38m1 stop
$427Delta
Find Deal
Fri, May 29 - Sat, Jun 6
United Airlines Logo
4:07 pm - 8:51 pmDCA-BIL
6h 44m1 stop
United Airlines Logo
12:30 pm - 10:16 pmBIL-DCA
7h 46m1 stop
$437United Airlines
Find Deal
Fri, Mar 13 - Wed, Mar 18
Delta Logo
3:10 pm - 8:20 pmDCA-BIL
7h 10m1 stop
Delta Logo
6:25 am - 7:01 pmBIL-DCA
10h 36m2 stops
$439Delta
Find Deal
Fri, Mar 13 - Tue, Mar 17
United Airlines Logo
2:12 pm - 9:07 pmIAD-BIL
8h 55m1 stop
United Airlines Logo
2:36 pm - 11:20 pmBIL-IAD
6h 44m1 stop
$445United Airlines
Find Deal
Sun, Jan 18 - Thu, Jan 22
Alaska Airlines Logo
7:14 pm - 1:22 pmBWI-BIL
20h 08m2 stops
Alaska Airlines Logo
7:00 am - 6:14 pmBIL-BWI
9h 14m1 stop
$447Alaska Airlines
Find Deal
Sat, Mar 14 - Wed, Mar 18
Alaska Airlines Logo
7:05 am - 2:52 pmIAD-BIL
9h 47m1 stop
Alaska Airlines Logo
7:40 am - 5:55 pmBIL-IAD
8h 15m1 stop
$454Alaska Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Billings flights

Get data-powered insights and trends into flights from Washington, D.C. to Billings to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. to Billings?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Billings departing in February.

What’s the cheapest day of the week to fly from Washington, D.C. to Billings?

The average price of all round-trip flights from Washington, D.C. to Billings clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Billings on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Washington, D.C. to Billings. For your return ticket, we recommend flying on a Thursday and avoiding Fridays for the best deals.

What is the cheapest month to fly from Washington, D.C. to Billings?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Billings, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Billings is July, where tickets cost $446 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $754 and $690 respectively.

Good to know

Low seasonJanuary
Cheapest flight$251
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Baltimore to Billings

When to book flights from Washington, D.C. to Billings

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Billings based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Billings

  • What is the cheapest flight from Washington, D.C. to Billings?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Billings was $251 for a one-way ticket and $409 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Billings?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Washington, D.C. to Billings?

    When flying out of Washington, D.C. you will be using one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be landing at Billings Logan Intl.

  • Which aircraft models fly most regularly from Washington, D.C. to Billings?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Billings?

    oneworld, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Billings, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Billings, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Billings are Delta and United Airlines. With an average price for the route of $528 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $560 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Billings?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Billings.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Billings?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billings from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Billings?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Billings with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Billings?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Billings from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Washington, D.C. to Billings

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Billings. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Billings? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8011 reviews
7.3Food
7.9Comfort
8.5Crew
7.9Entertainment
8.1Boarding
Airline reviews

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

10.0 ExcellentHartaj, Nov 2025LGA - RDU
Read more Delta reviews

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I like that the crew kept us informed but we moved back and forth from gate to gate before the aircraft arrived.

The flight was delayed multiple times, again no fault of American but again the extra cost, for everything makes it feel like a cheap airline! Especially when flights are outrageously expensive already

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

I had a positive experience on American. I'm blind and traveling with a guide dog and the flight attendants were so kind, friendly, and helpful towards us. They checked in on us during the flight and they made us feel comfortable and welcomed. There was an hour delay before depature, but overall the flight was a smooth ride. I appreciate that there were no issues on this long flight back home.

We were told the flight was delayed 5 times, then it was moved to the next day.

More choices on snacks. Built-in video screen to enjoy entertainment choices.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

Everything you need to know for your flight from Washington, D.C. to Billings

Information on your arrival and departure airports