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Washington, D.C.

$333+ Cheap flights from Helena (HLN) to Washington, D.C. (WAS)

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — WAS
Dec 25 — Jan 11
Thu 12/25
Thu 1/1
1 adult, Economy
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Find flight deals from Helena to Washington, D.C.

Cheapest flights from Helena to Washington, D.C.
Explore the most affordable flight options available from Helena to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 25, 2025.

This United Airlines deal was found by Cheapflights users on 11/25. 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.
Thu 12/112:30 pmHLN - BWI
1 stop6h 30mUnited Airlines
Mon 12/154:15 pmBWI - HLN
1 stop7h 07mUnited Airlines
Deal found 11/25$569
This Delta deal was found by Cheapflights users on 11/24. 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 12/95:30 amHLN - DCA
1 stop8h 31mDelta
Sat 12/1312:32 pmDCA - HLN
2 stops11h 58mDelta
Deal found 11/24$574
This Delta deal was found by Cheapflights users on 11/23. 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.
Wed 11/261:06 pmHLN - IAD
1 stop8h 52mDelta
Fri 11/287:10 amIAD - HLN
1 stop7h 16mDelta
Deal found 11/23$767
This United Airlines deal was found by Cheapflights users on 11/23. 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 11/256:40 amHLN - BWI
1 stop6h 30mUnited Airlines
Fri 11/288:15 amBWI - HLN
1 stop7h 12mUnited Airlines
Deal found 11/23$767
This Delta deal was found by Cheapflights users on 11/23. 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.
Wed 11/265:30 amHLN - DCA
1 stop8h 30mDelta
Fri 11/285:10 pmDCA - HLN
1 stop7h 20mDelta
Deal found 11/23$767
This Delta deal was found by Cheapflights users on 11/23. 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 11/255:30 amHLN - BWI
2 stops10h 52mDelta
Fri 11/2811:47 amBWI - HLN
2 stops12h 43mDelta
Deal found 11/23$777
This United Airlines deal was found by Cheapflights users on 11/23. 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.
Thu 11/276:40 amHLN - IAD
1 stop7h 01mUnited Airlines
Sun 11/305:30 pmIAD - HLN
2 stops29h 52mUnited Airlines
Deal found 11/23$817
This United Airlines deal was found by Cheapflights users on 11/23. 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.
Thu 11/276:40 amHLN - BWI
1 stop6h 30mUnited Airlines
Sun 11/308:30 pmBWI - HLN
1 stop26h 52mUnited Airlines
Deal found 11/23$1,041
This Delta deal was found by Cheapflights users on 11/23. 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.
Thu 11/275:30 amHLN - DCA
1 stop8h 30mDelta
Sun 11/305:10 pmDCA - HLN
1 stop7h 20mDelta
Deal found 11/23$1,108

Cheap flight deals from Helena to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Washington, D.C. (WAS). 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 November 25, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$364
(Alaska Airlines)

One-way from

$333
(Alaska Airlines)
Provider with most accurate pricing for Helena-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-Washington, D.C. (WAS) flights.
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From Helena to Washington, D.C. (WAS)
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One-way flight from Helena to Washington, D.C. (WAS)
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Helena to Washington, D.C. 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 November 25, 2025.
Use the filters below to find and compare flights from Helena to Washington, D.C. that are best for you.

Fly from

Helena

Fly to

Washington, D.C.

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 1/14

6:48 pm-4:09 pm

1 stop19h 21m

Washington, D.C. Reagan-National

Sat 1/17

8:00 am-6:11 pm

1 stop12h 11m

$364

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 1/21

6:48 pm-4:26 pm

1 stop19h 38m

Washington, D.C. Dulles Intl

Sat 1/24

6:04 pm-6:11 pm

1 stop26h 07m

$375

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 1/21

1:10 pm-11:10 pm

2 stops32h 00m

Washington, D.C. Dulles Intl

Sat 1/24

7:30 am-12:27 pm

2 stops30h 57m

$386

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Sat 1/17

1:10 pm-11:44 pm

1 stop8h 34m

Baltimore/Washington

Wed 1/21

7:00 am-12:27 pm

1 stop7h 27m

$389

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 1/14

1:10 pm-11:32 pm

2 stops8h 22m

Washington, D.C. Reagan-National

Sat 1/17

5:10 pm-10:29 pm

1 stop7h 19m

$394

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 1/14

6:48 pm-4:09 pm

1 stop19h 21m

Washington, D.C. Reagan-National

Fri 1/16

6:56 pm-6:11 pm

2 stops25h 15m

$441

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 4/18

12:50 pm-11:51 pm

1 stop9h 01m

Washington, D.C. Dulles Intl

Sun 5/3

7:15 am-12:23 pm

1 stop7h 08m

$487

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 4/18

12:50 pm-11:51 pm

1 stop9h 01m

Washington, D.C. Dulles Intl

Mon 5/4

7:15 am-10:34 pm

1 stop17h 19m

$502

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 4/18

12:50 pm-11:51 pm

1 stop9h 01m

Washington, D.C. Dulles Intl

Sat 5/2

5:00 pm-12:23 pm

2 stops21h 23m

$507

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 4/18

12:50 pm-11:51 pm

1 stop9h 01m

Washington, D.C. Dulles Intl

Fri 5/1

7:59 pm-12:23 pm

2 stops18h 24m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 20 results
1
2

Compare providers for flights from Helena to Washington, D.C.

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 Washington, D.C. in November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

Cheapflights Insights

Everything you need to know about your flight from Helena to Washington, D.C.

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

Currently, April is the cheapest month in which you can book a flight from Helena to Washington, D.C. (average of $169). Flying from Helena to Washington, D.C. in July is currently the most expensive (average of $302). 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.

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

Find hourly flight availability from Helena to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Helena to Washington, D.C. in the evening. If you’re flexible enough to do this you can expect to save up to 47% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated November 25, 2025.
See what other customers who have flown with United Airlines from Helena to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,046 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,046 reviews
United Airlines
7.4
Good
9,046 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

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

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

  • How long is the flight from Helena to Washington, D.C.?

    Departing from Helena to Washington, D.C. will take you 19h 21m. Airlines will cover a distance of 1835 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Helena to Washington, D.C.?

    Most travelers choose Helena - Washington, D.C. Reagan-National, Helena - Washington, D.C. Dulles Intl or Helena - Baltimore/Washington when deciding on the best route from Helena to Washington, D.C..

  • Can I find deals for flights from Helena to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Helena to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to Washington, D.C.?

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

  • Can I find deals for business class flights from Helena to Washington, D.C.?

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

    Currently, April is the cheapest month in which you can book a flight from Helena to Washington, D.C. (average of $169). Flying from Helena to Washington, D.C. in July is currently the most expensive (average of $302). 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Tysons
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Arlington
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Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
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Towson
National Harbor
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McLean

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