HLN - WAS

$200 Find Cheap Flights from Helena to Washington, D.C. - Compare and Save

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Everything you should know

Cheapest round-trip
$399
Typical prices: $538-$900
United Airlines
Sun 12/16Thu 1/18
HLN - DCA • 1 stop
Cheapest one-way
$200
Typical prices: $289-$481
Delta
Sat 12/15
HLN - DCA • 1 stop
Top routes
HLN - DCA
Cheapest • 5% average savings
HLN - IAD
Most popular
Insights
Insights
When to travel
January
Cheapest • 9% price drop
February
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $684 (round-trip)
Salt Lake City (SLC)
Shortest trip • 7h 51m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Helena to Washington, D.C. (HLN-WAS)

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

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

Thu, Feb 4 - Tue, Feb 9
Delta Logo
1:12 pm - 11:31 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Salt Lake City
Delta Logo
7:05 am - 12:32 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 27m1 stop Salt Lake City
$399Delta
Sat, Jan 30 - Tue, Feb 9
Delta Logo
1:12 pm - 11:31 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Salt Lake City
Delta Logo
7:05 am - 12:32 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 27m1 stop Salt Lake City
$399Delta
Wed, Dec 16 - Mon, Jan 18
United Airlines Logo
6:20 am - 2:56 pmHLN  Helena-DCA Washington, D.C. Reagan-National
6h 36m1 stop Denver Intl
United Airlines Logo
4:15 pm - 9:32 pmDCA  Washington, D.C. Reagan-National-HLN Helena
7h 17m1 stop Denver Intl
$399United Airlines
Wed, Dec 16 - Tue, Jan 19
United Airlines Logo
6:20 am - 2:56 pmHLN  Helena-DCA Washington, D.C. Reagan-National
6h 36m1 stop Denver Intl
United Airlines Logo
4:15 pm - 9:32 pmDCA  Washington, D.C. Reagan-National-HLN Helena
7h 17m1 stop Denver Intl
$399United Airlines
Sat, Jan 30 - Thu, Feb 4
Delta Logo
1:12 pm - 11:31 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Salt Lake City
Delta Logo
7:05 am - 12:32 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 27m1 stop Salt Lake City
$399Delta
Fri, Jan 29 - Tue, Feb 9
Delta Logo
1:12 pm - 11:31 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Salt Lake City
Delta Logo
7:05 am - 12:32 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 27m1 stop Salt Lake City
$399Delta
Wed, Feb 3 - Mon, Feb 8
Delta Logo
1:12 pm - 11:31 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Salt Lake City
Delta Logo
7:05 am - 12:32 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 27m1 stop Salt Lake City
$399Delta
Sat, Jan 30 - Sun, Feb 7
Delta Logo
1:12 pm - 11:31 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Salt Lake City
Delta Logo
7:05 am - 12:32 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 27m1 stop Salt Lake City
$399Delta
Wed, Feb 3 - Tue, Feb 9
Delta Logo
1:12 pm - 11:31 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Salt Lake City
Delta Logo
7:05 am - 12:32 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 27m1 stop Salt Lake City
$399Delta
Tue, Feb 2 - Wed, Feb 3
Delta Logo
1:12 pm - 11:31 pmHLN  Helena-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Salt Lake City
Delta Logo
7:05 am - 12:32 pmIAD  Washington, D.C. Dulles Intl-HLN Helena
7h 27m1 stop Salt Lake City
$399Delta
Booking Insights

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

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Round-trip flights from Helena to Washington, D.C. typically range from $538 to $900. The lowest price found in the past 5 days was $399, on United Airlines.

What is the cheapest Helena to Washington, D.C. flight route?

There's little price difference between Helena to Washington, D.C. routes. They average around $614 round-trip, based on KAYAK data over the past 12 months.

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

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Helena to Washington, D.C.. It’s 9% cheaper than the average day, while Sunday is the most expensive, with prices 51% higher.

Find deals

Key details for Helena to Washington, D.C. flights

Low season

September

Cheapest flight

$200
Beat the crowds with an average 79% drop in travelers.
The most popular month to fly with an average 56% increase in travelers.
One-way flight from Helena to Washington, D.C. Reagan-National Airport

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

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

Your Helena to Washington, D.C. flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

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

    Only Economy Class is available on flights from Helena to Washington, D.C..

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

    There are currently no nonstop flights available from Helena to Washington, D.C.. Flights with 1 layover take between 7h 18m and 17h 51m in total, depending on the connection.

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

    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.

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

    Round-trip flights from Helena to Washington, D.C. range from $538 to $900, with an average of $644 over the past 12 months. Anything below $538 counts as a good deal.

  • Have flight prices from Helena to Washington, D.C. 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 $399 to $3,705. That means the highest observed fare was about 9x higher than the lowest one.

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

    One-way fares from Helena to Washington, D.C. are currently lower than usual. Average one-way flight prices are about $229, which is 28% below the typical average for this route.

  • What car rental options are available in Washington, D.C.?

    Since Washington, D.C. is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Washington, D.C. Reagan-National Airport (DCA) — daily rates averaging $71:

    • Sixt
    • Dollar
    • Thrifty
    • Hertz
    • Alamo

    Near Washington, D.C. Dulles Intl Airport (IAD) — daily rates averaging $70:

    • Dollar
    • Hertz
    • Budget
    • Sixt
    • Thrifty

  • Which airports can I use when flying from Helena to Washington, D.C.?

    Flights from Helena to Washington, D.C. usually depart from Helena (HLN) and may arrive at several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD).

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

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

    • Denver Intl (DEN) - 75% of one-stop connections
    • Salt Lake City (SLC) - 22% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 3% of one-stop connections

  • Can I save money by using flexible dates for flights from Helena to Washington, D.C.?

    Yes. Flexible dates can save you up to 40% on flights from Helena to Washington, D.C.. Wednesday is the cheapest departure day at $592 round-trip on average, while Sunday is the most expensive at $974, a difference of $382.

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

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 7h 18m, compared with 7h 51m via Salt Lake City (SLC) and 17h 51m via Seattle/Tacoma Intl (SEA).

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

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

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

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

Your guide to booking Helena to Washington, D.C. flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average $592, about $382 less than Sunday fares (39% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Helena to Washington, D.C. trip for January. Fares historically average $583 round-trip in that month - typically $658 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Washington, D.C. Reagan-National Airport.

    • Hyatt House Washington DC The Wharf
    • Intercontinental Hotels Washington D.C. - The Wharf By IHG
    • Canopy by Hilton Washington D.C - The Wharf

More options for your flight from Helena to Washington, D.C.

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

Car rentals in Washington, D.C.
Hotels in Washington, D.C.
Vacations in Washington, D.C.