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Dulles Intl

$198+ Cheap flights from Helena (HLN) to Dulles Intl (IAD)

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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — IAD
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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Cheap flight deals from Helena to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Dulles Intl (IAD). 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 January 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$367
(United Airlines)

One-way from

$198
(United Airlines)
Provider with most accurate pricing for Helena-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Helena-Washington, D.C. Dulles Intl flights.
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From Helena to Washington, D.C. Dulles Intl
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One-way flight from Helena to Washington, D.C. Dulles Intl
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Find flight deals from Helena to Dulles Intl

Cheapest flights from Helena to Dulles Intl
Explore the most affordable flight options available from Helena to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2025.

This United Airlines deal was found by Cheapflights users on 1/19. 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.
Tue 3/112:25 pmHLN - IAD
1 stop6h 58mUnited Airlines
Tue 3/253:58 pmIAD - HLN
1 stop7h 28mUnited Airlines
Deal found 1/19$367
This Delta deal was found by Cheapflights users on 1/20. 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.
Tue 4/81:15 pmHLN - IAD
1 stop8h 35mDelta
Tue 4/1512:35 pmIAD - HLN
2 stops12h 00mDelta
Deal found 1/20$372
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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.
Tue 6/174:10 pmHLN - IAD
1 stop11h 45mAlaska Airlines
Wed 7/97:00 amIAD - HLN
1 stop10h 43mAlaska Airlines
Deal found 1/19$606

Find flights from Helena to Dulles Intl within your budget

Customize your flight search to find flights from Helena to Dulles Intl 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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 3/11

2:25 pm-11:23 pm

1 stop6h 58m

Washington, D.C. Dulles Intl

Tue 3/25

3:58 pm-9:26 pm

1 stop7h 28m

$367

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 4/8

1:15 pm-11:50 pm

1 stop8h 35m

Washington, D.C. Dulles Intl

Tue 4/15

12:35 pm-10:35 pm

2 stops12h 00m

$372

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 6/17

4:10 pm-5:55 am

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 7/9

7:00 am-3:43 pm

1 stop10h 43m

$606

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 3/13

2:25 pm-11:23 pm

1 stop6h 58m

$198

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 3/13

1:15 pm-11:49 pm

1 stop8h 34m

$230

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 6/19

4:10 pm-5:55 am

2 stops11h 45m

$407

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Compare providers for flights from Helena to Dulles Intl

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 Helena to Dulles Intl in January.
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 Helena-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helena-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helena-Washington, D.C. Dulles Intl Airport 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 Helena-Washington, D.C. Dulles Intl Airport 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 Helena to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Helena 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.

Travel insights for flights from Helena to Dulles Intl

Get recent, data-driven insights about flights from Helena to Dulles Intl including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Helena to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Helena to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated January 20, 2025.
Alaska Airlines
8.0
Very good
9,696 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,696 reviews
Alaska Airlines
8.0
Very good
9,696 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,521 reviews
Alaska Airlines
8.0
Very good
9,696 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,982 reviews
Alaska Airlines
8.0
Very good
9,696 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Helena to Dulles Intl. 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 from for flights from Helena to Washington, D.C. Dulles Intl?

    Most people fly from Helena (HLN) if they book a flight from Helena to Washington, D.C. Dulles Intl. On average, Helena has 0 outbound flights to Washington, D.C. Dulles Intl per day from 1 airline. Helena is conveniently located just 2.7 mi from Helena’s city center.

  • What are the cheapest airlines flying from Helena to Washington, D.C. Dulles Intl Airport round-trip?

    Our cheapest airline available from Helena to Washington, D.C. Dulles Intl Airport is United Airlines. Our recent data shows that you can find tickets from as low as $367 on this airline. Additional options worth looking into are Delta and Alaska Airlines, starting at $372 and $606 round-trip.

  • What are the cheapest airlines to fly from Helena to Washington, D.C. Dulles Intl Airport one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $198. Users have also found prices from $230 and $407 on Delta and Alaska Airlines, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Helena to Dulles Intl 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 Helena to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Helena to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Helena to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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

Traveling to a place near Helena?

Book flights to Helena if you plan to visit one of these locations
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Gaithersburg
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Laurel
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Herndon
Woodbridge
Bowie
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Top airline flying from Helena to Dulles Intl

Discover the top airline that operate flights from Helena to Dulles Intl. 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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$344Average$434FlexibilityNo cancel feeOn-time69%
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