IAD - BIL

$186 Find Cheap Flights from Washington Dulles Airport to Billings - Compare and Save

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 9/9. 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

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Everything you should know

Cheapest round-trip
$320
Multiple Airlines
Fri 9/18Mon 9/28
IAD - BIL • 1 stop
Cheapest one-way
$186
Delta
Wed 9/9
IAD - BIL • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Billings. You'll need at least 1 connection.
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Top layover airports
Seattle (SEA)
Cheapest • Avg $454 (round-trip)
Minneapolis (MSP)
Shortest trip • 7h 05m (one-way)
Insights
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When to travel
March
Cheapest • 100% price drop
June
Most popular
Good to know
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We hope you love your trip to Billings!
Flight Deals
Booking Insights
Flight 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

Fri, Sep 18 - Mon, Sep 28
Multiple Airlines Logo
6:00 am - 4:21 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
12h 21m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
5:22 pm - 6:20 amBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
10h 58m1 stop Las Vegas Harry Reid Intl
$320Multiple Airlines
Fri, Sep 18 - Fri, Oct 2
Multiple Airlines Logo
6:00 am - 4:21 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
12h 21m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
10:22 pm - 6:20 amBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
29h 58m1 stop Las Vegas Harry Reid Intl
$332Multiple Airlines
Tue, Nov 3 - Mon, Nov 16
United Airlines Logo
5:20 pm - 10:30 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
7h 10m1 stop Denver Intl
United Airlines Logo
2:42 pm - 11:15 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
6h 33m1 stop Denver Intl
$359United Airlines
Sat, Sep 19 - Fri, Oct 2
United Airlines Logo
6:15 am - 11:02 amIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
6h 47m1 stop Chicago O'Hare Intl
United Airlines Logo
5:57 pm - 5:17 amBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
9h 20m1 stop Denver Intl
$359United Airlines
Fri, Oct 30 - Tue, Nov 3
American Airlines Logo
3:08 pm - 9:12 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
8h 04m1 stop Dallas/Fort Worth
American Airlines Logo
1:54 pm - 11:19 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
7h 25m1 stop Dallas/Fort Worth
$359American Airlines
Fri, Sep 18 - Mon, Sep 28
Multiple Airlines Logo
6:00 am - 4:21 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
12h 21m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
5:22 pm - 12:10 amBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
28h 48m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
$359Multiple Airlines
Wed, Sep 30 - Sat, Oct 3
United Airlines Logo
2:43 pm - 9:10 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
8h 27m1 stop Denver Intl
United Airlines Logo
5:00 am - 1:30 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
6h 30m1 stop Denver Intl
$359United Airlines
Sun, Sep 6 - Sat, Sep 12
United Airlines Logo
4:15 pm - 9:00 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
6h 45m1 stop Denver Intl
United Airlines Logo
2:29 pm - 11:19 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
6h 50m1 stop Denver Intl
$359United Airlines
Tue, Sep 15 - Tue, Sep 29
Delta Logo
6:47 pm - 11:15 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
6h 28m1 stop Minneapolis St Paul
Delta Logo
6:33 pm - 11:45 amBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
15h 12m2 stops Salt Lake City New York John F Kennedy Intl
$364Delta
Fri, Oct 30 - Tue, Nov 3
Delta Logo
10:14 am - 8:15 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
12h 01m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul
Delta Logo
12:58 pm - 11:35 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
8h 37m1 stop Salt Lake City
$364Delta
Booking Insights

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 is the cheapest month to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Billings is March, where tickets cost $0 (return) on average. On the other hand, the most expensive months are July and September, where the average cost of round-trip tickets is $873 and $825 respectively.

Find deals

Good to know

Low season

April

Cheapest flight

$186
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 24% lower on average.
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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Billings was $186 for a one-way ticket and $320 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?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Billings.

  • 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.

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

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Billings (BIL)