BIL - IAD

$210 Find Cheap Flights from Billings to Washington Dulles Airport - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$359
Typical prices: $476-$760
Delta
Mon 2/5Fri 2/9
BIL - IAD • 1 stop
Cheapest one-way
$210
Typical prices: $249-$383
United Airlines
Tue 10/23
BIL - IAD • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Billings and Washington, D.C. Dulles Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
October
Cheapest • 27% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Minneapolis St Paul (MSP)
Cheapest • Avg $583 (round-trip)
Denver Intl (DEN)
Shortest trip • 7h 18m (one-way)
Insights
Insights
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We hope you love your trip to Washington, D.C. Dulles Intl Airport!
Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Billings to Dulles Intl

Wed, Oct 28 - Mon, Nov 2
American Airlines Logo
1:21 pm - 11:23 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
8h 02m1 stop Dallas/Fort Worth
American Airlines Logo
2:42 pm - 8:40 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
7h 58m1 stop Dallas/Fort Worth
$359American Airlines
Fri, Feb 5 - Tue, Feb 9
Delta Logo
12:58 pm - 11:46 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
8h 48m1 stop Salt Lake City
Delta Logo
7:15 am - 12:19 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
7h 04m1 stop Salt Lake City
$359Delta
Fri, Feb 5 - Tue, Feb 9
Delta Logo
12:58 pm - 11:46 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
8h 48m1 stop Salt Lake City
Delta Logo
10:05 am - 10:32 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
14h 27m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$364Delta
Fri, Feb 5 - Tue, Feb 9
Delta Logo
6:15 am - 9:12 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
12h 57m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson
Delta Logo
3:00 pm - 10:32 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
9h 32m2 stops Minneapolis St Paul Salt Lake City
$369Delta
Fri, Nov 6 - Fri, Nov 13
United Airlines Logo
2:42 pm - 11:15 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
6h 33m1 stop Denver Intl
United Airlines Logo
6:10 am - 1:29 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
9h 19m1 stop Denver Intl
$379United Airlines
Tue, Oct 27 - Sat, Oct 31
American Airlines Logo
1:21 pm - 11:23 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
8h 02m1 stop Dallas/Fort Worth
American Airlines Logo
3:08 pm - 9:12 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
8h 04m1 stop Dallas/Fort Worth
$379American Airlines
Wed, Oct 28 - Wed, Nov 4
Delta Logo
12:58 pm - 11:35 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
8h 37m1 stop Salt Lake City
Delta Logo
6:13 am - 12:18 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
8h 05m1 stop Salt Lake City
$379Delta
Wed, Oct 28 - Mon, Nov 2
Delta Logo
12:58 pm - 11:35 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
8h 37m1 stop Salt Lake City
Delta Logo
2:28 pm - 8:15 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
7h 47m1 stop Minneapolis St Paul
$379Delta
Fri, Nov 6 - Fri, Nov 13
Delta Logo
6:30 am - 1:48 pmBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
5h 18m1 stop Minneapolis St Paul
Delta Logo
7:00 am - 12:18 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
7h 18m1 stop Salt Lake City
$379Delta
Fri, Oct 16 - Sat, Oct 24
United Airlines Logo
5:57 pm - 5:17 amBIL  Billings Logan Intl-IAD Washington, D.C. Dulles Intl
9h 20m1 stop Denver Intl
United Airlines Logo
12:40 pm - 5:16 pmIAD  Washington, D.C. Dulles Intl-BIL Billings Logan Intl
6h 36m1 stop Denver Intl
$394United Airlines
Booking Insights

Price, demand and travel trends for Billings to Washington, D.C. Dulles Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Billings to Washington, D.C. Dulles Intl Airport with more confidence.

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

Round-trip flights from Billings to Washington, D.C. Dulles Intl Airport start at $359. Prices are below average for this route right now, with typical round-trip fares ranging from $476 to $760. The lowest price found in the past 5 days was $359 on Delta.

What's the cheapest day of the week to fly from Billings to Washington, D.C. Dulles Intl Airport?

Saturday is the cheapest day of the week to fly from Billings to Washington, D.C. Dulles Intl Airport, it is 23% cheaper than the average day. Sunday is the most expensive day with flight prices 40% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • October is the cheapest month to fly from Billings to Washington, D.C. Dulles Intl Airport at $427 round-trip.
  • June ($802) and December ($766) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 87% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Billings to Washington, D.C. Dulles Intl Airport flights

Low season

November

Cheapest flight

$210
Best time to beat the crowds but there is an average 30% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Billings to Washington, D.C. Dulles Intl Airport

When to book flights from Billings to Dulles Intl

Are your dates flexible? Find out the best times to travel from Billings to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Billings to Washington, D.C. Dulles Intl Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Billings to Washington, D.C. Dulles Intl Airport?

    Flights from Billings to Washington, D.C. Dulles Intl Airport usually depart from Billings Logan Intl (BIL) and arrive at Washington, D.C. Dulles Intl (IAD).

  • What cabin classes can I book on flights from Billings to Washington, D.C. Dulles Intl Airport?

    Only Economy Class is available on flights from Billings to Washington, D.C. Dulles Intl Airport.

  • Which airports do connecting flights from Billings to Washington, D.C. Dulles Intl Airport pass through?

    One-stop flights from Billings to Washington, D.C. Dulles Intl Airport most commonly connect through:

    • Denver Intl (DEN) - 75% of one-stop connections
    • Dallas/Fort Worth (DFW) - 9% of one-stop connections
    • Minneapolis St Paul (MSP) - 9% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 6% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Billings to Washington, D.C. Dulles Intl Airport?

    On the Billings to Washington, D.C. Dulles Intl Airport route, being flexible with your departure day can save you up to 46%. Saturday is the cheapest day at $449 round-trip on average, while Sunday is the most expensive at $817: a $368 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What popular places can I visit in Washington, D.C. Dulles Intl Airport?

    Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

  • How long is a flight from Billings to Washington, D.C. Dulles Intl Airport?

    A nonstop flight from Billings to Washington, D.C. Dulles Intl Airport takes 0h 00m, covering 1,643 miles.

  • Do I need a passport to fly from Billings to Washington, D.C. Dulles Intl Airport?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Billings to Washington, D.C. Dulles Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $359 to $3,452. That means the highest observed fare was about 10x higher than the lowest one.

  • How are flight prices from Billings to Washington, D.C. Dulles Intl Airport looking right now?

    One-way fares from Billings to Washington, D.C. Dulles Intl Airport are currently in line with typical prices for this route. Average one-way fares are about $321.

  • How much time can I save by choosing a different layover airport from Billings to Washington, D.C. Dulles Intl Airport?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 7h 18m, compared with 8h 05m via Minneapolis St Paul (MSP) and 8h 25m via Dallas/Fort Worth (DFW).

  • What is the time difference between Billings and Washington, D.C. Dulles Intl Airport?

    Washington, D.C. Dulles Intl Airport is 2 hours ahead of Billings (Eastern Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

    Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:
    • Dollar
    • Budget
    • Hertz
    • Sixt
    • Thrifty

  • How much should I expect to pay for a Billings to Washington, D.C. Dulles Intl Airport flight?

    Round-trip flights from Billings to Washington, D.C. Dulles Intl Airport range from $476 to $760, with an average of $583 over the past 12 months. Anything below $476 counts as a good deal.

Your guide to booking Billings to Washington, D.C. Dulles Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Saturday departure instead of Sunday. On this route, Saturday flights average $449 - about $368 less than Sunday (45% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Billings to Washington, D.C. Dulles Intl Airport trip for October. Fares historically average $427 round-trip in that month - typically $375 less than the most expensive month, which is June (based on the last 12 months).

More options for your flight from Billings to Dulles Intl

Complete your trip to Washington, D.C. with a hotel stay or car rental

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