HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$171+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — IAD
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Helena to Dulles Intl with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$342
(Delta)

One-way from

$171
(Delta)
Provider with most accurate pricing for Helena-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-Washington, D.C. Dulles Intl flights.
Search Deals
From Helena to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Helena to Washington, D.C. Dulles Intl
Search Deals

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 December 18, 2024.

This United deal was found by Cheapflights users on 12/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/172:35 pmHLN - IAD
2 stops19h 12mUnited Airlines
Fri 12/2010:38 pmIAD - HLN
2 stops17h 07mUnited Airlines
Deal found 12/17$1,223

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 1/8

1:30 pm-11:36 pm

1 stop8h 06m

Washington, D.C. Dulles Intl

Mon 1/13

7:20 am-12:50 pm

1 stop7h 30m

$342

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 1/22

4:41 pm-5:57 pm

1 stop23h 16m

Washington, D.C. Dulles Intl

Sat 1/25

6:57 pm-4:04 pm

1 stop23h 07m

$403

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 1/18

2:25 pm-3:28 pm

2 stops23h 03m

Washington, D.C. Dulles Intl

Sat 1/25

5:55 pm-9:36 pm

2 stops29h 41m

$587

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 1/22

1:30 pm-11:36 pm

1 stop8h 06m

$171

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 1/3

2:25 pm-11:25 pm

1 stop7h 00m

$709

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 1/3

3:29 pm-9:30 pm

2 stops28h 01m

$754

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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 December.
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, November is the cheapest month in which you can book a flight from Helena to Washington, D.C. Dulles Intl Airport (average of $299). Flying from Helena to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $377). 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 December 18, 2024.
Alaska Airlines
8.0
Very good
9,552 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.2

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Alaska Airlines
8.0
Very good
9,552 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.2

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Delta
8.0
Very good
8,604 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.2

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

United Airlines
7.4
Good
9,059 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Food

7.2

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

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 Delta. Our recent data shows that you can find tickets from as low as $342 on this airline. Additional options worth looking into are Alaska Airlines and United Airlines, starting at $403 and $587 round-trip.

  • 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, November is the cheapest month in which you can book a flight from Helena to Washington, D.C. Dulles Intl Airport (average of $299). Flying from Helena to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $377). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$344Average$563FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.