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 $395. Other airlines that can offer you cheap pricing are Alaska Airlines, from $413, and United Airlines, from $550.

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 United Airlines ($233), Alaska Airlines ($317), and Delta ($510).

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Helena?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Helena flight should consider departing on Saturday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Helena?

It’s generally more expensive to depart on a Friday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

April is one of the best times of the year to fly to Helena from Washington, D.C. Dulles Intl Airport. Prices for April average $687 per person but you can even find prices for as low as $417. The most expensive prices can be found in the month of February. Opting for a April flight can save you 41% on your journey compared to booking in February

What is the cheapest time of day to fly from IAD to HLN?

When flying from Washington, D.C. Dulles Intl Airport to Helena, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

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.

$233+ Save on Flights from Washington, D.C. Dulles Intl Airport to Helena

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Cheap flight deals from Dulles Intl to Helena

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$395 (Delta)
One-way from	$233 (United Airlines)
Popular in	February
Cheapest in	April
Average price	$975

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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One-way flight from Washington, D.C. Dulles Intl to Helena

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High demand for flights, 5% potential price rise

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).

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Average for round-trip flights in February 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 February 20, 2025.

Tue 4/87:35 amIAD - HLN

1 stop7h 00mDelta

Wed 4/91:15 pmHLN - IAD

1 stop8h 35mDelta

Deal found 2/19

$395

Tue 3/257:00 amIAD - HLN

1 stop10h 39mAlaska Airlines

Mon 3/314:19 pmHLN - IAD

1 stop11h 15mAlaska Airlines

Deal found 2/19

$413

Tue 3/48:20 amIAD - HLN

1 stop14h 52mUnited Airlines

Tue 3/112:25 pmHLN - IAD

1 stop6h 58mUnited Airlines

Deal found 2/18

$550

Best flights from Dulles Intl to Helena
Discover carefully curated flight deals from Dulles Intl to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Tue 4/87:35 amIAD - HLN

1 stop7h 00mDelta

Mon 4/141:18 pmHLN - IAD

1 stop8h 13mDelta

Deal found 2/19

$395

Tue 3/257:00 amIAD - HLN

1 stop10h 39mAlaska Airlines

Mon 3/314:19 pmHLN - IAD

1 stop11h 15mAlaska Airlines

Deal found 2/19

$413

Tue 3/48:20 amIAD - HLN

1 stop14h 52mUnited Airlines

Tue 3/112:25 pmHLN - IAD

1 stop6h 58mUnited Airlines

Deal found 2/18

$550

Last-minute flights from Dulles Intl to Helena
Discover last-minute flight deals from Dulles Intl to Helena. Data last updated February 20, 2025 and is based on user searches.

Sat 3/17:20 amIAD - HLN

1 stop7h 30mDelta

Fri 3/141:15 pmHLN - IAD

1 stop8h 34mDelta

Deal found 2/19

$835

Tue 3/48:20 amIAD - HLN

1 stop14h 52mUnited Airlines

Tue 3/112:25 pmHLN - IAD

1 stop6h 58mUnited Airlines

Deal found 2/18

$550

Tue 3/257:00 amIAD - HLN

1 stop10h 39mAlaska Airlines

Mon 3/314:19 pmHLN - IAD

1 stop11h 15mAlaska Airlines

Deal found 2/19

$413

One-way flights from Dulles Intl to Helena
Search for one-way flight options from Dulles Intl to Helena. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Fri 7/42:34 pmIAD - HLN

1 stop8h 25mUnited Airlines

Deal found 2/19

$233

Sun 3/166:48 pmIAD - HLN

1 stop22h 54mAlaska Airlines

Deal found 2/19

$317

Mon 6/167:30 amIAD - HLN

1 stop7h 05mDelta

Deal found 2/19

$510

Find flights from Dulles Intl to Helena within your budget

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Tue 4/8

7:35 am-12:35 pm

1 stop7h 00m

Helena

Wed 4/9

1:15 pm-11:50 pm

1 stop8h 35m

$395

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Tue 3/25

7:00 am-3:39 pm

1 stop10h 39m

Helena

Mon 3/31

4:19 pm-5:34 am

1 stop11h 15m

$413

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Tue 3/4

8:20 am-9:12 pm

1 stop14h 52m

Helena

Tue 3/11

2:25 pm-11:23 pm

1 stop6h 58m

$550

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Fri 7/4

2:34 pm-8:59 pm

1 stop8h 25m

$233

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sun 3/16

6:48 pm-3:42 pm

1 stop22h 54m

$317

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Mon 6/16

7:30 am-12:35 pm

1 stop7h 05m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Compare providers for flights from Dulles Intl to Helena

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 February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust 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.

Travel insights for flights from Dulles Intl to Helena

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

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 $637). 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

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

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

Alaska Airlines

8.0

Very good

9,691 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

9,691 reviews

Alaska Airlines

8.0

Very good

9,691 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

8,227 reviews

Alaska Airlines

8.0

Very good

9,691 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

8,771 reviews

Alaska Airlines

8.0

Very good

9,691 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

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.
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 $395. Other airlines that can offer you cheap pricing are Alaska Airlines, from $413, and United Airlines, from $550.
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 United Airlines ($233), Alaska Airlines ($317), and Delta ($510).
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 $637). 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

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$527	Average$758	FlexibilityNo cancel fee	On-time69%

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$233+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Helena with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Dulles Intl to Helena

Most accurate provider

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Round-trip from

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Find flight deals from Dulles Intl to Helena

Cheapest flights from Dulles Intl to HelenaExplore 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 February 20, 2025.

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 February 20, 2025.

Find flights from Dulles Intl to Helena within your budget

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 February.

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.

Travel insights for flights from Dulles Intl to Helena

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

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

Rainfall in Helena by month

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

Temperature in Helena by month

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

Reviews of airlines servicing Helena

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?

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

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

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

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

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

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

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.

Top airline flying from Dulles Intl to Helena

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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 February 20, 2025.