IAD - BIL

$195 Find Cheap Flights from Washington Dulles Airport 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 Dulles Intl to Billings departing on 9/5. 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

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 20% 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.

Flights Deals
Useful Info
Flights Deals

Cheap Flights from Dulles Intl to Billings (IAD-BIL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl 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 Dulles Intl to Billings

Mon, Sep 15 - Mon, Sep 22
Alaska Airlines Logo
6:09 pm - 3:03 pmIAD-BIL
22h 54m1 stop
Alaska Airlines Logo
7:18 pm - 7:32 amBIL-IAD
10h 14m1 stop
$388Alaska Airlines
Find Deal
Thu, Aug 14 - Thu, Aug 21
American Airlines Logo
6:27 am - 1:22 pmIAD-BIL
8h 55m1 stop
American Airlines Logo
7:00 am - 5:14 pmBIL-IAD
8h 14m1 stop
$389American Airlines
Find Deal
Wed, Aug 13 - Sat, Aug 23
Delta Logo
6:50 pm - 11:10 pmIAD-BIL
6h 20m1 stop
Delta Logo
6:25 am - 1:25 pmBIL-IAD
5h 00m1 stop
$391Delta
Find Deal
Thu, Aug 14 - Thu, Aug 21
American Airlines Logo
1:18 pm - 11:00 pmIAD-BIL
11h 42m2 stops
American Airlines Logo
1:58 pm - 10:44 pmBIL-IAD
6h 46m1 stop
$394American Airlines
Find Deal
Fri, Aug 22 - Wed, Aug 27
Delta Logo
6:50 pm - 11:12 pmIAD-BIL
6h 22m1 stop
Delta Logo
6:25 am - 1:25 pmBIL-IAD
5h 00m1 stop
$395Delta
Find Deal
Fri, Jul 25 - Wed, Jul 30
United Airlines Logo
2:45 pm - 9:03 pmIAD-BIL
8h 18m1 stop
United Airlines Logo
4:15 pm - 12:45 amBIL-IAD
6h 30m1 stop
$400United Airlines
Find Deal
Tue, Jul 15 - Tue, Jul 22
Delta Logo
7:04 pm - 11:10 pmIAD-BIL
6h 06m1 stop
Delta Logo
6:26 pm - 8:59 amBIL-IAD
12h 33m2 stops
$404Delta
Find Deal
Thu, Sep 4 - Sun, Sep 7
Hawaiian Airlines Logo
7:00 am - 3:03 pmIAD-BIL
10h 03m1 stop
Hawaiian Airlines Logo
7:18 pm - 7:32 amBIL-IAD
10h 14m1 stop
$414Hawaiian Airlines
Find Deal
Sun, Oct 5 - Sat, Oct 11
United Airlines Logo
6:30 am - 11:16 amIAD-BIL
6h 46m1 stop
United Airlines Logo
2:30 pm - 11:22 pmBIL-IAD
6h 52m1 stop
$415United Airlines
Find Deal
Sat, Jul 19 - Sat, Jul 26
Hawaiian Airlines Logo
6:30 am - 3:05 pmIAD-BIL
10h 35m1 stop
Hawaiian Airlines Logo
7:17 pm - 7:27 amBIL-IAD
10h 10m1 stop
$845Hawaiian Airlines
Find Deal
Useful Info

KAYAK's insights & trends for Dulles Intl to Billings flights

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

What’s the cheapest day of the week to fly from Washington Dulles Airport to Billings?

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

When flying from Washington Dulles Airport to Billings, you should consider leaving on a Saturday and avoid Sundays if you are looking for the best rates. For your return to Washington Dulles Airport, you’ll find the best rates on Thursdays and the most expensive ones on Fridays.

Good to know

Low seasonApril
High seasonJune
Cheapest flight$195
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Washington Dulles Airport to Billings

When to book flights from Dulles Intl to Billings

Are your dates flexible? Find out the best times to travel from Dulles Intl 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 Washington Dulles Airport to Billings flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Billings was $195 for a one-way ticket and $388 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Billings?

    No, a passport isn't needed to fly from Washington Dulles Airport to Billings. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Billings?

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

  • Which airline alliances offer flights from Washington Dulles Airport to Billings?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport 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, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Billings are United Airlines and American Airlines. With an average price for the route of $523 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $508 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport 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 Dulles Airport to Billings.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billings from Washington Dulles Airport 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 Dulles Airport 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 Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and BIL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport 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 Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Dulles Intl 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 Dulles Intl 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.
7.4
United AirlinesOverall score based on 8809 reviews
8.1Crew
6.6Food
7.7Boarding
7.0Entertainment
7.3Comfort
Airline reviews

Gate agent did not hold flight for connection, provided no assistance to get new flight

2.0 MediocreJack, Jun 2025SAT - IAH
Read more United Airlines reviews

Gate agent did not hold flight for connection, provided no assistance to get new flight

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

United airlines, mediocre at best. No issues , nothing great . Worked for me

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Liked nothing. As per previous segment it was delay delay delay.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Pitch was very small. Knees were on the seat back in front of me.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Everything you need to know for your flight from Dulles Intl to Billings

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.