IAD - HLN

$320 Find Cheap Flights from Washington Dulles Airport to Helena - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$379
Typical prices: $502-$716
United Airlines
Wed 10/10Wed 11/7
IAD - HLN • 1 stop
Cheapest one-way
$320
Typical prices: $289-$378
United Airlines
Thu 10/18
IAD - HLN • 1 stop
When to travel
January
Cheapest • 29% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Salt Lake City (SLC)
Cheapest • Avg $613 (round-trip)
Denver Intl (DEN)
Shortest trip • 7h 32m (one-way)
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Cheap Flights from Dulles Intl to Helena (IAD-HLN)

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

Recent round-trip flight deals from Dulles Intl to Helena

Sat, Oct 24 - Fri, Oct 30
United Airlines Logo
2:43 pm - 9:08 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
8h 25m1 stop Denver Intl
United Airlines Logo
6:28 am - 5:55 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
9h 27m1 stop Denver Intl
$379United Airlines
Sat, Oct 10 - Sat, Nov 7
United Airlines Logo
2:43 pm - 9:08 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
8h 25m1 stop Denver Intl
United Airlines Logo
2:23 pm - 11:15 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
6h 52m1 stop Denver Intl
$379United Airlines
Tue, Oct 13 - Tue, Oct 20
Delta Logo
6:13 am - 12:28 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
8h 15m1 stop Salt Lake City
Delta Logo
1:08 pm - 12:42 amHLN  Helena-IAD Washington, D.C. Dulles Intl
9h 34m2 stops Salt Lake City Atlanta Hartsfield-Jackson
$384Delta
Sat, Oct 24 - Fri, Oct 30
Delta Logo
6:05 am - 12:28 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
8h 23m2 stops Detroit Metropolitan Wayne County Salt Lake City
Delta Logo
1:08 pm - 11:35 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 27m1 stop Salt Lake City
$384Delta
Sat, Oct 10 - Sat, Nov 7
Delta Logo
6:13 am - 12:28 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
8h 15m1 stop Salt Lake City
Delta Logo
1:08 pm - 12:42 amHLN  Helena-IAD Washington, D.C. Dulles Intl
9h 34m2 stops Salt Lake City Atlanta Hartsfield-Jackson
$384Delta
Sat, Oct 24 - Fri, Oct 30
Delta Logo
6:05 am - 12:28 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
8h 23m2 stops Detroit Metropolitan Wayne County Salt Lake City
Delta Logo
1:08 pm - 12:42 amHLN  Helena-IAD Washington, D.C. Dulles Intl
9h 34m2 stops Salt Lake City Atlanta Hartsfield-Jackson
$389Delta
Tue, Oct 13 - Tue, Oct 20
Delta Logo
6:05 am - 12:28 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
8h 23m2 stops Detroit Metropolitan Wayne County Salt Lake City
Delta Logo
1:08 pm - 12:42 amHLN  Helena-IAD Washington, D.C. Dulles Intl
9h 34m2 stops Salt Lake City Atlanta Hartsfield-Jackson
$402Delta
Sat, Oct 3 - Wed, Oct 7
Delta Logo
3:15 pm - 10:29 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
9h 14m2 stops Atlanta Hartsfield-Jackson Salt Lake City
Delta Logo
1:08 pm - 10:12 amHLN  Helena-IAD Washington, D.C. Dulles Intl
19h 04m2 stops Salt Lake City Detroit Metropolitan Wayne County
$429Delta
Sat, Oct 3 - Wed, Oct 7
Delta Logo
7:00 am - 12:17 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 17m1 stop Salt Lake City
Delta Logo
1:08 pm - 10:12 amHLN  Helena-IAD Washington, D.C. Dulles Intl
19h 04m2 stops Salt Lake City Detroit Metropolitan Wayne County
$437Delta
Mon, Sep 28 - Wed, Oct 7
Delta Logo
7:00 am - 12:17 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 17m1 stop Salt Lake City
Delta Logo
1:08 pm - 10:12 amHLN  Helena-IAD Washington, D.C. Dulles Intl
19h 04m2 stops Salt Lake City Detroit Metropolitan Wayne County
$459Delta
Booking Insights

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

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

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

Round-trip flights from Washington, D.C. Dulles Intl Airport to Helena start at $379. Prices are below average for this route right now, with typical round-trip fares ranging from $502 to $716. The lowest price found in the past 5 days was $379 on United Airlines.

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

Low season

April

Cheapest flight

$320
Best time to beat the crowds but there is an average 43% increase in price.
Flight from Washington, D.C. Dulles Intl Airport to Helena

When to book flights from Dulles Intl to Helena

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

Your Washington, D.C. Dulles Intl Airport to Helena 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 Washington, D.C. Dulles Intl Airport to Helena?

    Flights from Washington, D.C. Dulles Intl Airport to Helena usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Helena (HLN).

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

    Two cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Helena:

    • Economy Class
    • First Class

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

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

    • Denver Intl (DEN) - 91% of one-stop connections
    • Salt Lake City (SLC) - 6% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 3% 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 Washington, D.C. Dulles Intl Airport to Helena?

    Yes. Being flexible with your travel dates can save you up to 88% on the Washington, D.C. Dulles Intl Airport to Helena route. Thursday is the cheapest departure day at $414 round-trip on average, while Friday is the most expensive at $3,280, a difference of $2,866. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    There are currently no nonstop flights available from Washington, D.C. Dulles Intl Airport to Helena. Flights with 1 layover take between 7h 32m and 9h 47m in total, depending on the connection.

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

    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 Washington, D.C. Dulles Intl Airport to Helena 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 $379 to $3,161. That means the highest observed fare was about 8x higher than the lowest one.

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

    One-way fares from Washington, D.C. Dulles Intl Airport to Helena are currently higher than usual. Average one-way flight prices are about $476, which is 40% above the typical average for this route.

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

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 7h 32m, compared with 7h 47m via Salt Lake City (SLC) and 9h 47m via Seattle/Tacoma Intl (SEA).

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

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

  • What car rental options are available at Helena Airport (HLN)?

    Helena Airport (HLN) hosts 5 major car rental companies, with daily rates starting from around $25 for economy cars. Top options include:
    • Budget
    • Enterprise Rent-A-Car
    • Hertz
    • Avis
    • National

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

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Helena range from $502 to $716, with an average of $613 over the past 12 months. Anything below $502 counts as a good deal.

Your guide to booking Washington, D.C. Dulles Intl Airport to Helena 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 Thursday departure instead of Friday. On this route, Thursday flights average $414 - about $2,866 less than Friday (87% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Helena trip for January. Fares historically average $437 round-trip in that month - typically $659 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Helena Airport.
    - Days Inn by Wyndham Helena
    - Americas Best Value Inn & Suites Helena
    - Baymont by Wyndham Helena

More options for your flight from Dulles Intl to Helena

Complete your trip to Helena with a hotel stay or car rental

Car rentals in Helena
Hotels in Helena
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