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Washington, D.C.

$236+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — WAS
Feb 18 — Feb 251
Wed 2/18
Wed 2/25
1 adult, Economy
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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 January 19, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$334
(United Airlines)

One-way from

$236
(Delta)
Provider with most accurate pricing for Helena-Washington, D.C. (WAS) flight deals.
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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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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 January 19, 2026.

This United Airlines deal was found by Cheapflights users on 1/19. 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.
Wed 2/182:25 pm
HLN
-
BWI
1 stop7h 00m
United Airlines
Wed 2/254:09 pm
BWI
-
HLN
1 stop7h 07m
United Airlines
Deal found 1/19$334
This Alaska Airlines deal was found by Cheapflights users on 1/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/144:36 pm
HLN
-
DCA
1 stop27h 23m
Alaska Airlines
Wed 2/188:00 am
DCA
-
HLN
1 stop9h 59m
Alaska Airlines
Deal found 1/17$350
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Fri 1/302:27 pm
HLN
-
IAD
1 stop6h 55m
United Airlines
Tue 2/32:24 pm
IAD
-
HLN
1 stop9h 02m
United Airlines
Deal found 1/16$359
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Fri 1/302:27 pm
HLN
-
BWI
1 stop6h 48m
United Airlines
Mon 2/24:10 pm
BWI
-
HLN
1 stop7h 16m
United Airlines
Deal found 1/16$359
This Delta deal was found by Cheapflights users on 1/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/221:10 pm
HLN
-
IAD
1 stop8h 38m
Delta
Sun 1/257:05 am
IAD
-
HLN
1 stop7h 22m
Delta
Deal found 1/17$484
This Delta deal was found by Cheapflights users on 1/18. 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 1/221:10 pm
HLN
-
BWI
1 stop8h 34m
Delta
Wed 1/287:00 am
BWI
-
HLN
1 stop7h 27m
Delta
Deal found 1/18$484
This Delta deal was found by Cheapflights users on 1/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/225:30 am
HLN
-
DCA
1 stop8h 30m
Delta
Sun 1/255:10 pm
DCA
-
HLN
1 stop7h 19m
Delta
Deal found 1/17$484
This Alaska Airlines deal was found by Cheapflights users on 1/18. 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.
Sat 3/144:36 pm
HLN
-
DCA
1 stop27h 23m
Alaska Airlines
Tue 3/175:00 pm
DCA
-
HLN
1 stop26h 45m
Alaska Airlines
Deal found 1/18$494
This United Airlines deal was found by Cheapflights users on 1/17. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/142:25 pm
HLN
-
DCA
3 stops19h 34m
United Airlines
Wed 2/184:11 pm
DCA
-
HLN
1 stop7h 05m
United Airlines
Deal found 1/17$509
This Delta deal was found by Cheapflights users on 1/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/211:10 pm
HLN
-
IAD
1 stop8h 38m
Delta
Sun 1/2510:08 am
IAD
-
HLN
2 stops14h 21m
Delta
Deal found 1/17$524
This Alaska Airlines deal was found by Cheapflights users on 1/18. 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.
Sun 3/154:36 pm
HLN
-
IAD
1 stop11h 04m
Alaska Airlines
Wed 3/187:00 am
IAD
-
HLN
1 stop12h 45m
Alaska Airlines
Deal found 1/18$530
This Alaska Airlines deal was found by Cheapflights users on 1/18. 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.
Sat 3/144:36 pm
HLN
-
IAD
2 stops22h 51m
Alaska Airlines
Tue 3/177:05 am
IAD
-
HLN
1 stop10h 54m
Alaska Airlines
Deal found 1/18$542

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 January 19, 2026.
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

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Wed 2/18

2:25 pm-11:25 pm

1 stop7h 00m

Baltimore/Washington

Wed 2/25

4:09 pm-9:16 pm

1 stop7h 07m

$334

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 2/14

4:36 pm-9:59 pm

1 stop27h 23m

Washington, D.C. Reagan-National

Wed 2/18

8:00 am-3:59 pm

1 stop9h 59m

$350

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 1/30

2:27 pm-11:22 pm

1 stop6h 55m

Washington, D.C. Dulles Intl

Tue 2/3

2:24 pm-9:26 pm

1 stop9h 02m

$359

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Fri 1/30

2:27 pm-11:15 pm

1 stop6h 48m

Baltimore/Washington

Mon 2/2

4:10 pm-9:26 pm

1 stop7h 16m

$359

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 2/14

6:15 am-2:59 pm

1 stop6h 44m

Washington, D.C. Reagan-National

Wed 2/18

3:30 pm-1:40 pm

2 stops24h 10m

$489

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 3/14

4:36 pm-9:59 pm

1 stop27h 23m

Washington, D.C. Reagan-National

Tue 3/17

5:00 pm-5:45 pm

1 stop26h 45m

$494

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sun 3/15

4:36 pm-5:40 am

1 stop11h 04m

Washington, D.C. Dulles Intl

Wed 3/18

7:00 am-5:45 pm

1 stop12h 45m

$530

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 3/14

4:36 pm-5:27 pm

2 stops22h 51m

Washington, D.C. Dulles Intl

Tue 3/17

7:05 am-3:59 pm

1 stop10h 54m

$542

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Sun 3/15

4:36 pm-5:46 pm

1 stop23h 10m

Baltimore/Washington

Wed 3/18

7:05 pm-5:45 pm

1 stop24h 40m

$560

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Sat 3/14

2:30 pm-11:12 pm

1 stop6h 42m

Baltimore/Washington

Tue 3/17

8:02 am-1:38 pm

1 stop7h 36m

$578

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

Showing 1-10 of 16 results
1
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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 January.
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 $158). 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.

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 7h. Airlines will cover a distance of 1842 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 - Baltimore/Washington or Helena - Washington, D.C. Dulles Intl 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 $158). 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
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Hanover
Fredericksburg
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Rockville
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