HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helena

$232+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — HLN
abr. 20 — abr. 271
dom. 4/20
dom. 4/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Helena 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 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 abril 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$581
(Delta)

One-way from

$238
(Delta)

Popular in

November

Cheapest in

April

Average price

$394
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 abril 15, 2025.

This Delta deal was found by Cheapflights users on 4/14. 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. 8/127:30 amIAD - HLN
1 stop7h 05mDelta
mar. 8/191:03 pmHLN - IAD
1 stop8h 50mDelta
Deal found 4/14$465
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
jue. 9/47:00 amIAD - HLN
1 stop10h 34mAlaska Airlines
lun. 9/84:11 pmHLN - IAD
1 stop13h 21mAlaska Airlines
Deal found 4/15$490
This United Airlines deal was found by Cheapflights users on 4/14. 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.
vie. 8/152:39 pmIAD - HLN
1 stop8h 36mUnited Airlines
jue. 8/217:00 amHLN - IAD
1 stop6h 34mUnited Airlines
Deal found 4/14$555
This Hawaiian Airlines deal was found by Cheapflights users on 4/15. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/3010:00 amIAD - HLN
1 stop10h 49mHawaiian Airlines
dom. 5/47:29 pmHLN - IAD
1 stop10h 14mHawaiian Airlines
Deal found 4/15$662

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 abril 15, 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

mar. 8/12

7:30 am-12:35 pm

1 stop7h 05m

Helena

vie. 8/22

1:03 pm-11:53 pm

1 stop8h 50m

$465

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

jue. 9/4

7:00 am-3:34 pm

1 stop10h 34m

Helena

lun. 9/8

4:11 pm-7:32 am

1 stop13h 21m

$490

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

vie. 8/15

2:39 pm-9:15 pm

1 stop8h 36m

Helena

jue. 8/21

7:00 am-3:34 pm

1 stop6h 34m

$555

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

mié. 4/30

10:00 am-6:49 pm

1 stop10h 49m

Helena

dom. 5/4

7:29 pm-7:43 am

1 stop10h 14m

$662

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

mar. 8/5

9:00 am-3:31 pm

1 stop8h 31m

$232

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

lun. 6/16

6:00 am-12:38 pm

2 stops8h 38m

$238

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

jue. 5/15

6:30 am-3:31 pm

1 stop11h 01m

$252

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

mié. 8/6

3:56 pm-9:15 pm

1 stop7h 19m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Helena (average of $353). Flying from Washington, D.C. Dulles Intl Airport to Helena in July is currently the most expensive (average of $607). 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 Helena by month

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

In terms of precipitation, rainfall in Helena ranges from 0.3 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Helena when rainfall is around 0.3 in.

Temperature in Helena by month

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

If weather is an important factor for your trip to Helena, 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 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 21.2 F).

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 abril 15, 2025.
Alaska Airlines
8.0
Very good
9,871 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,918 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,375 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

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

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Helena round-trip from $581. Other airlines that can offer you cheap pricing are United Airlines, from $605, and Alaska Airlines, from $612.

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

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Helena are Delta ($238), Hawaiian Airlines ($252), and Alaska Airlines ($258).

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Helena (average of $353). Flying from Washington, D.C. Dulles Intl Airport to Helena in July is currently the most expensive (average of $607). 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.

Alternative routes for Dulles Intl to Helena

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Bozeman flights
Baltimore to Bozeman flights
Reagan-National to Bozeman flights
Dulles Intl to Kalispell flights
Reagan-National to Kalispell flights
Baltimore to Kalispell flights
Dulles Intl to Missoula flights
Baltimore to Missoula flights
Reagan-National to Missoula flights
Dulles Intl to Billings flights
Baltimore to Billings flights
Dulles Intl to Great Falls flights
Baltimore to Great Falls flights
Reagan-National to Billings flights
Baltimore to Helena flights
Reagan-National to Great Falls flights
Baltimore to Cody flights
Dulles Intl to Cody flights
Reagan-National to Cody flights
Baltimore to Butte flights
Reagan-National to Helena flights
Baltimore to West Yellowstone flights
Dulles Intl to West Yellowstone flights
Reagan-National to West Yellowstone flights
Dulles Intl to Butte flights
Dulles Intl to Sidney flights
Reagan-National to Butte flights

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.