HLN - IAD

$349 Find Cheap Flights from Helena to Washington Dulles Airport

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to Dulles Intl departing on 10/24. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$349
Alaska Airlines
Sat 10/24Tue 10/27
HLN - IAD • 1 stop
Cheapest one-way
$388
United Airlines
Mon 7/27
HLN - IAD • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Helena and Dulles Intl. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Start a new search
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

Sat, Oct 24 - Tue, Oct 27
Alaska Airlines Logo
4:48 pm - 5:40 am
HLN
-
IAD
10h 52m
1 stop
Alaska Airlines Logo
9:35 am - 4:11 pm
IAD
-
HLN
8h 36m
1 stop
$349Alaska Airlines
Fri, Jun 5 - Tue, Jun 9
United Airlines Logo
2:20 pm - 12:45 am
HLN
-
IAD
8h 25m
1 stop
United Airlines Logo
2:35 pm - 9:20 pm
IAD
-
HLN
8h 45m
1 stop
$419United Airlines
Thu, Sep 17 - Mon, Sep 21
Alaska Airlines Logo
5:18 pm - 5:40 am
HLN
-
IAD
10h 22m
1 stop
Alaska Airlines Logo
7:47 pm - 4:41 pm
IAD
-
HLN
22h 54m
2 stops
$475Alaska Airlines
Sat, Oct 24 - Tue, Oct 27
United Airlines Logo
2:35 pm - 11:19 pm
HLN
-
IAD
6h 44m
1 stop
United Airlines Logo
8:15 am - 8:59 pm
IAD
-
HLN
14h 44m
2 stops
$542United Airlines
Fri, Jun 5 - Tue, Jun 9
Delta Logo
1:03 pm - 11:32 pm
HLN
-
IAD
8h 29m
1 stop
Delta Logo
12:29 pm - 10:31 pm
IAD
-
HLN
12h 02m
2 stops
$544Delta
Thu, Sep 17 - Mon, Sep 21
Alaska Airlines Logo
5:18 pm - 6:14 pm
HLN
-
IAD
22h 56m
2 stops
Alaska Airlines Logo
7:47 pm - 4:41 pm
IAD
-
HLN
22h 54m
2 stops
$601Alaska Airlines
Fri, Jun 5 - Tue, Jun 9
Delta Logo
1:03 pm - 12:51 am
HLN
-
IAD
9h 48m
2 stops
Delta Logo
12:29 pm - 10:31 pm
IAD
-
HLN
12h 02m
2 stops
$629Delta
Sat, Oct 24 - Tue, Oct 27
United Airlines Logo
2:35 pm - 7:19 am
HLN
-
IAD
14h 44m
2 stops
United Airlines Logo
8:15 am - 8:59 pm
IAD
-
HLN
14h 44m
2 stops
$661United Airlines
Wed, Jun 3 - Sun, Jun 7
Alaska Airlines Logo
4:43 pm - 7:34 am
HLN
-
IAD
12h 51m
1 stop
Alaska Airlines Logo
5:35 pm - 4:06 pm
IAD
-
HLN
24h 31m
1 stop
$724Alaska Airlines
Wed, Jun 3 - Sun, Jun 7
Alaska Airlines Logo
4:43 pm - 7:34 am
HLN
-
IAD
12h 51m
1 stop
Alaska Airlines Logo
5:35 pm - 4:06 pm
IAD
-
HLN
24h 31m
1 stop
$769Alaska Airlines
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 3 days.

In the past 3 days, the cheapest round-trip tickets from Helena to Washington Dulles Airport were found on Alaska Airlines ($349) and United Airlines ($419).

Find deals

Good to know

Cheapest flight$349
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 $388 for a one-way ticket and $349 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)