HLN - IAD

$180 Find Cheap Flights from Helena to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to Dulles Intl departing on 5/30. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Washington, D.C., 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 Helena to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$359
United Airlines
Fri 2/20Fri 2/27
HLN - IAD • 1 stop
Cheapest one-way
$180
United Airlines
Sat 5/30
HLN - IAD • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Helena to Dulles Intl (HLN-IAD)

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

Fri, Feb 20 - Fri, Feb 27
United Airlines Logo
2:25 pm - 11:19 pm
HLN
-
IAD
6h 54m
1 stop
United Airlines Logo
2:12 pm - 9:16 pm
IAD
-
HLN
9h 04m
1 stop
$359United Airlines
Wed, Mar 11 - Mon, Mar 16
United Airlines Logo
2:30 pm - 11:20 pm
HLN
-
IAD
6h 50m
1 stop
United Airlines Logo
2:12 pm - 9:25 pm
IAD
-
HLN
9h 13m
1 stop
$383United Airlines
Sat, Feb 21 - Sat, Feb 28
United Airlines Logo
2:25 pm - 11:18 pm
HLN
-
IAD
6h 53m
1 stop
United Airlines Logo
8:15 am - 1:40 pm
IAD
-
HLN
7h 25m
1 stop
$404United Airlines
Sat, Feb 21 - Sat, Feb 28
United Airlines Logo
2:25 pm - 11:18 pm
HLN
-
IAD
6h 53m
1 stop
United Airlines Logo
8:15 am - 1:40 pm
IAD
-
HLN
7h 25m
1 stop
$449United Airlines
Wed, Mar 11 - Mon, Mar 16
Alaska Airlines Logo
4:36 pm - 5:27 pm
HLN
-
IAD
22h 51m
2 stops
Alaska Airlines Logo
6:27 pm - 3:59 pm
IAD
-
HLN
23h 32m
1 stop
$451Alaska Airlines
Fri, Feb 20 - Tue, Feb 24
Delta Logo
1:10 pm - 11:46 pm
HLN
-
IAD
8h 36m
1 stop
Delta Logo
12:38 pm - 10:27 pm
IAD
-
HLN
11h 49m
2 stops
$454Delta
Wed, Mar 11 - Mon, Mar 16
Alaska Airlines Logo
4:36 pm - 5:27 pm
HLN
-
IAD
22h 51m
2 stops
Alaska Airlines Logo
6:20 pm - 3:59 pm
IAD
-
HLN
23h 39m
2 stops
$463Alaska Airlines
Wed, May 13 - Sat, May 16
Alaska Airlines Logo
4:43 pm - 7:34 am
HLN
-
IAD
12h 51m
1 stop
Alaska Airlines Logo
6:00 am - 4:06 pm
IAD
-
HLN
12h 06m
1 stop
$479Alaska Airlines
Thu, Mar 12 - Sun, Mar 15
Alaska Airlines Logo
4:36 pm - 5:40 am
HLN
-
IAD
11h 04m
1 stop
Alaska Airlines Logo
6:20 pm - 3:59 pm
IAD
-
HLN
23h 39m
2 stops
$491Alaska Airlines
Thu, Feb 19 - Sun, Feb 22
Delta Logo
1:10 pm - 11:46 pm
HLN
-
IAD
8h 36m
1 stop
Delta Logo
7:05 am - 12:25 pm
IAD
-
HLN
7h 20m
1 stop
$499Delta
Booking Insights

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

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

Which airlines provide the cheapest flights from Helena to Washington Dulles Airport?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Helena to Washington Dulles Airport were found on United Airlines ($359) and Alaska Airlines ($451).

Find deals

Good to know

Cheapest flight$180
Flight from Helena to Washington Dulles Airport

When to book flights from Helena to Dulles Intl

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

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

    In the last 3 days, the lowest price for a flight from Helena to Washington, D.C. Dulles Intl Airport was $180 for a one-way ticket and $359 for a round-trip.

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

    A passport is not required to fly from Helena to Washington Dulles Airport.

  • Which airports will I be using when flying from Helena to Washington Dulles Airport?

    When flying out of Helena you will be using Helena. You will be landing at Washington Dulles Airport, also known as Washington, D.C. Dulles Intl.

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

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

  • How does KAYAK find such low prices on flights from Helena to Washington Dulles Airport?

    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 Helena to Washington Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Helena 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 Helena to Washington Dulles Airport?

    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 Washington Dulles Airport with an airline and back to Helena with another airline. Booking your flights between Helena and IAD 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 Helena to Washington Dulles Airport?

    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 Washington Dulles Airport from Helena 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 Helena to Dulles Intl

Information on your arrival and departure airports

Helena (HLN)
Dulles Intl (IAD)