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Helena

$372+ Cheap flights from Dulles Intl (IAD) to Helena (HLN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HLN
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap 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 October 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$372
(Alaska Airlines)

Popular in

November

Cheapest in

April

Average price

$662
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Helena flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Helena flights.
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From Washington, D.C. Dulles Intl to Helena
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Highest demand for flights based on searches. 16% potential increase in price ($127 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($62 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Fri 12/56:30 pmIAD - HLN
1 stop25h 21mAlaska Airlines
Mon 12/86:28 pmHLN - IAD
1 stop20h 08mAlaska Airlines
Deal found 10/27$372
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Fri 12/56:30 pmIAD - HLN
1 stop25h 21mAlaska Airlines
Tue 12/96:28 pmHLN - IAD
1 stop20h 08mAlaska Airlines
Deal found 10/27$382
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 12/47:34 amIAD - HLN
1 stop12h 17mAlaska Airlines
Mon 12/86:28 pmHLN - IAD
1 stop9h 38mAlaska Airlines
Deal found 10/27$402
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 12/47:34 amIAD - HLN
1 stop12h 17mAlaska Airlines
Tue 12/96:28 pmHLN - IAD
1 stop20h 08mAlaska Airlines
Deal found 10/27$412
This Delta deal was found by Cheapflights users on 10/27. 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.
Wed 12/37:05 amIAD - HLN
1 stop7h 20mDelta
Tue 12/91:06 pmHLN - IAD
1 stop8h 23mDelta
Deal found 10/27$417
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Fri 12/56:30 pmIAD - HLN
1 stop25h 21mAlaska Airlines
Wed 12/106:28 pmHLN - IAD
1 stop20h 08mAlaska Airlines
Deal found 10/27$418
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 12/37:34 amIAD - HLN
1 stop12h 17mAlaska Airlines
Sun 12/76:28 pmHLN - IAD
1 stop9h 38mAlaska Airlines
Deal found 10/27$437
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 12/47:34 amIAD - HLN
1 stop12h 17mAlaska Airlines
Wed 12/106:28 pmHLN - IAD
1 stop20h 08mAlaska Airlines
Deal found 10/27$447
This Delta deal was found by Cheapflights users on 10/27. 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.
Wed 12/37:05 amIAD - HLN
1 stop7h 20mDelta
Thu 12/111:06 pmHLN - IAD
1 stop8h 23mDelta
Deal found 10/27$465
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 12/412:30 pmIAD - HLN
2 stops12h 00mDelta
Wed 12/101:06 pmHLN - IAD
1 stop8h 23mDelta
Deal found 10/27$470
This Delta deal was found by Cheapflights users on 10/27. 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.
Sat 12/67:05 amIAD - HLN
1 stop7h 20mDelta
Thu 12/115:30 amHLN - IAD
2 stops16h 42mDelta
Deal found 10/27$472

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 October 28, 2025.
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

Dulles Intl

Fly to

Helena

Route

Depart

Return

Price

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 12/6

7:34 am-5:51 pm

1 stop12h 17m

Helena

Mon 12/8

6:28 pm-4:36 pm

1 stop20h 08m

$372

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Fri 12/5

6:30 pm-5:51 pm

1 stop25h 21m

Helena

Sun 12/7

6:28 pm-6:06 am

1 stop9h 38m

$372

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Fri 12/5

6:30 pm-5:51 pm

1 stop25h 21m

Helena

Mon 12/8

6:28 pm-4:36 pm

1 stop20h 08m

$372

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 12/6

7:34 am-5:51 pm

1 stop12h 17m

Helena

Sun 12/7

6:28 pm-6:06 am

1 stop9h 38m

$372

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 12/6

7:34 am-5:51 pm

1 stop12h 17m

Helena

Tue 12/9

6:28 pm-4:36 pm

1 stop20h 08m

$382

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Fri 12/5

6:30 pm-5:51 pm

1 stop25h 21m

Helena

Tue 12/9

6:28 pm-4:36 pm

1 stop20h 08m

$382

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Thu 12/4

7:34 am-5:51 pm

1 stop12h 17m

Helena

Tue 12/9

6:28 pm-4:36 pm

1 stop20h 08m

$412

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 12/6

7:05 am-12:25 pm

1 stop7h 20m

Helena

Wed 12/10

1:06 pm-11:29 pm

1 stop8h 23m

$417

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 12/3

7:05 am-12:25 pm

1 stop7h 20m

Helena

Tue 12/9

1:06 pm-11:29 pm

1 stop8h 23m

$417

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Thu 12/4

7:34 am-5:51 pm

1 stop12h 17m

Helena

Wed 12/10

6:28 pm-4:36 pm

1 stop20h 08m

$447

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 17 results
1
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Expedia the most. Expedia 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Helena (average of $198). Flying from Washington, D.C. Dulles Intl Airport to Helena in March is currently the most expensive (average of $369). 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.

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helena. Reviews last updated October 28, 2025.
Read reviews from past customers who have flown United Airlines from Washington, D.C. Dulles Intl Airport to Helena. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,001 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,001 reviews
United Airlines
7.4
Good
9,001 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 1 airline. 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 $372, Alaska Airlines can have you in Helena from Washington, D.C. Dulles Intl Airport in 12h 17m. There are 1812 mi between Washington, D.C. Dulles Intl Airport and Helena.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Helena (average of $198). Flying from Washington, D.C. Dulles Intl Airport to Helena in March is currently the most expensive (average of $369). 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.

See more FAQs

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Top airline flying from Dulles Intl to Helena

Discover the top airline that operate flights from Dulles Intl to Helena. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$412Average$549FlexibilityNo cancel feeOn-time69%

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