HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helena

$231+ Cheap flights from Dulles Intl (IAD) to Helena (HLN)

IAD — HLN
Nov 8 — Nov 151
Sun 11/8
Sun 11/15
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

Cheapest flights from Dulles Intl to Helena

Wed 12/92:10 pm -
1 stop9h 36m
Sun 12/136:20 am -
1 stop8h 59m
Deal found 10/6$379
Wed 12/97:00 am -
1 stop7h 30m
Sun 12/131:10 pm -
1 stop8h 37m
Deal found 10/8$397
Wed 12/164:21 pm -
1 stop7h 25m
Sun 12/202:27 pm -
1 stop8h 32m
Deal found 10/6$493
Sun 11/16:10 am -
1 stop9h 30m
Thu 11/192:23 pm -
1 stop6h 52m
Deal found 10/9$500
Fri 12/256:45 am -
1 stop9h 01m
Thu 12/312:27 pm -
1 stop8h 32m
Deal found 10/6$534
Fri 10/166:13 am -
1 stop8h 15m
Mon 10/191:08 pm -
1 stop8h 27m
Deal found 10/8$539
Tue 10/204:12 pm -
1 stop6h 56m
Sat 10/242:30 pm -
1 stop6h 55m
Deal found 10/5$569
Wed 10/1412:30 pm -
2 stops11h 54m
Sat 10/171:08 pm -
2 stops9h 34m
Deal found 10/8$584
Sun 11/16:13 am -
1 stop8h 15m
Thu 11/197:00 am -
2 stops15h 20m
Deal found 10/9$616

Find flight deals from Dulles Intl to Helena

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$379
(United Airlines)

One-way from

$231
(United Airlines)

Popular in

September

Cheapest in

February

Average price

$676
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
Highest demand for flights based on searches. 43% potential increase in price ($681 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 42% potential price decrease ($266 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Wed 11/25

4:10 pm-9:31 pm

1 stop7h 21m

Helena

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$231

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Thu 12/17

6:45 am-1:46 pm

1 stop9h 01m

Helena

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$390

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Wed 12/9

7:00 am-12:30 pm

1 stop7h 30m

Helena

Sun 12/13

1:10 pm-11:47 pm

1 stop8h 37m

$397

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Sun 12/20

2:25 pm-9:37 pm

1 stop9h 12m

Helena

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$449

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Wed 12/16

4:21 pm-9:46 pm

1 stop7h 25m

Helena

Sun 12/20

2:27 pm-12:59 am

1 stop8h 32m

$493

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Wed 1/6

2:11 pm-9:32 pm

1 stop9h 21m

Helena

Sat 1/9

2:27 pm-11:26 pm

1 stop6h 59m

$499

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Sat 12/19

10:45 pm-1:46 pm

2 stops17h 01m

Helena

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$599

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Fri 12/18

6:10 am-9:37 pm

2 stops17h 27m

Helena

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$648

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Sorted by cheapest first

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 October.
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 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

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 0 airlines. 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 $493, Delta can have you in Helena from Washington, D.C. Dulles Intl Airport in 7h 25m. There are 1812 mi between Washington, D.C. Dulles Intl Airport and Helena. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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.