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Helena

$190+ Cheap flights from Dulles Intl (IAD) to Helena (HLN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HLN
apr 25 — mag 21
sab 4/25
sab 5/2
1 adult, Economy
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Cheap flight deals from Dulles Intl to Helena

Cheapest flights from Dulles Intl to Helena
Explore the most affordable flight options available from Dulles Intl to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 26, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 4/247:20 pm
IAD
-
HLN
1 stop24h 25m
Alaska Airlines
lun 4/276:22 pm
HLN
-
IAD
1 stop9h 28m
Alaska Airlines
Deal found 3/23$369
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 8/187:25 am
IAD
-
HLN
1 stop6h 58m
Delta
sab 8/2912:50 pm
HLN
-
IAD
1 stop9h 01m
Delta
Deal found 3/22$401
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 8/187:25 am
IAD
-
HLN
1 stop6h 58m
Delta
gio 9/312:50 pm
HLN
-
IAD
1 stop9h 01m
Delta
Deal found 3/22$428
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 8/152:43 pm
IAD
-
HLN
1 stop8h 33m
United Airlines
lun 8/312:29 pm
HLN
-
IAD
1 stop6h 55m
United Airlines
Deal found 3/22$469
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 8/207:25 am
IAD
-
HLN
1 stop6h 58m
Delta
lun 8/3112:50 pm
HLN
-
IAD
1 stop9h 01m
Delta
Deal found 3/22$470
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 8/207:25 am
IAD
-
HLN
1 stop6h 58m
Delta
sab 8/2912:50 pm
HLN
-
IAD
2 stops9h 20m
Delta
Deal found 3/22$475
This Delta deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 4/97:20 am
IAD
-
HLN
1 stop7h 01m
Delta
gio 4/161:04 pm
HLN
-
IAD
1 stop8h 40m
Delta
Deal found 3/24$479
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 8/147:25 am
IAD
-
HLN
1 stop6h 58m
Delta
sab 8/2912:50 pm
HLN
-
IAD
1 stop9h 01m
Delta
Deal found 3/22$480
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 4/118:25 am
IAD
-
HLN
1 stop7h 14m
United Airlines
sab 4/182:25 pm
HLN
-
IAD
1 stop7h 09m
United Airlines
Deal found 3/22$495

Find flight deals from Dulles Intl to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Helena (HLN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated marzo 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(Alaska Airlines)

One-way from

$190
(Alaska Airlines)

Popular in

December

Cheapest in

April
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Helena flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Helena flights.
Search Deals
From Washington, D.C. Dulles Intl to Helena
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Helena
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($41 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Helena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated marzo 26, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

ven 4/24

7:20 pm-5:45 pm

1 stop24h 25m

Helena

lun 4/27

6:22 pm-5:41 pm

2 stops21h 19m

$441

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

gio 4/9

7:20 am-12:21 pm

1 stop7h 01m

Helena

gio 4/16

1:04 pm-11:44 pm

1 stop8h 40m

$479

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

dom 8/16

7:25 am-12:23 pm

1 stop6h 58m

Helena

lun 8/31

12:50 pm-11:51 pm

1 stop9h 01m

$480

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

mer 8/19

5:30 pm-12:23 pm

2 stops20h 53m

Helena

sab 8/29

12:50 pm-12:10 am

2 stops9h 20m

$564

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

gio 5/28

11:15 am-10:33 pm

2 stops13h 18m

Helena

mer 6/3

1:03 pm-12:51 am

2 stops9h 48m

$648

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

dom 6/7

6:00 am-4:06 pm

1 stop12h 06m

Helena

mer 6/10

5:26 pm-6:48 pm

2 stops23h 22m

$749

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

ven 5/22

2:35 pm-9:20 pm

1 stop8h 45m

Helena

ven 5/29

2:20 pm-12:45 am

1 stop8h 25m

$818

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

lun 6/29

6:30 am-1:33 pm

1 stop9h 03m

Helena

dom 7/5

6:15 am-5:27 am

1 stop21h 12m

$900
Quickest round-trip

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

mar 6/30

7:15 am-12:20 pm

1 stop7h 05m

Helena

lun 7/6

1:00 pm-11:31 pm

1 stop8h 31m

$909

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

mar 6/30

7:48 pm-4:49 pm

2 stops23h 01m

Helena

lun 7/6

5:26 pm-6:54 am

1 stop11h 28m

$922

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from Dulles Intl to Helena

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Helena in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Helena flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Helena flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Helena flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Helena

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

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Helena (average of $196). Flying from Washington, D.C. Dulles Intl Airport to Helena in March is currently the most expensive (average of $333). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Helena from Washington, D.C. Dulles Intl?

    Most people fly into Helena (HLN) if they book a flight to Helena from Washington, D.C. Dulles Intl. On average, Helena has 0 inbound flights from Washington, D.C. Dulles Intl per day from 0 airlines. Helena is conveniently located just 2.7 mi from Helena’s city center.

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

    For as low as $479, Alaska Airlines can have you in Helena from Washington, D.C. Dulles Intl Airport in 7h 01m. There are 1812 mi between Washington, D.C. Dulles Intl Airport and Helena. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Dulles Intl to Helena that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Helena?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Helena.

  • Can I find deals for business class flights from Dulles Intl to Helena?

    Yes. Cheapflights offers flight deals from Dulles Intl to Helena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Helena (average of $196). Flying from Washington, D.C. Dulles Intl Airport to Helena in March is currently the most expensive (average of $333). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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