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Helena

$290+ Cheap flights from Reagan-National (DCA) 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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — HLN
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from Reagan-National to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$433
(Alaska Airlines)

One-way from

$285
(United Airlines)

Popular in

November

Cheapest in

April

Average price

$483
Provider with most accurate pricing for Washington, D.C. Reagan-National-Helena flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Helena flights.
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From Washington, D.C. Reagan-National to Helena
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One-way flight from Washington, D.C. Reagan-National to Helena
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Highest demand for flights based on searches. 35% potential increase in price ($390 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($62 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Reagan-National to Helena

Cheapest flights from Reagan-National to Helena
Explore the most affordable flight options available from Reagan-National to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This United Airlines deal was found by Cheapflights users on 1/13. 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 1/244:11 pm
DCA
-
HLN
1 stop7h 15m
United Airlines
Wed 1/286:15 am
HLN
-
DCA
1 stop6h 44m
United Airlines
Deal found 1/13$404
This Alaska Airlines deal was found by Cheapflights users on 1/13. 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 4/258:00 am
DCA
-
HLN
1 stop11h 45m
Alaska Airlines
Fri 5/16:22 pm
HLN
-
DCA
1 stop25h 37m
Alaska Airlines
Deal found 1/13$433
This Alaska Airlines deal was found by Cheapflights users on 1/15. 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.
Wed 2/118:00 am
DCA
-
HLN
1 stop12h 11m
Alaska Airlines
Mon 2/164:36 pm
HLN
-
DCA
1 stop27h 23m
Alaska Airlines
Deal found 1/15$474
This Delta deal was found by Cheapflights users on 1/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/305:10 pm
DCA
-
HLN
1 stop7h 19m
Delta
Tue 2/35:30 am
HLN
-
DCA
1 stop8h 30m
Delta
Deal found 1/15$499

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 January 15, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Helena that are best for you.

Fly from

Reagan-National

Fly to

Helena

Route

Depart

Return

Price

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sat 4/25

8:00 am-5:45 pm

1 stop11h 45m

Helena

Fri 5/1

6:22 pm-9:59 pm

1 stop25h 37m

$433

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sat 4/25

8:00 am-5:45 pm

1 stop11h 45m

Helena

Thu 4/30

6:22 pm-9:59 pm

1 stop25h 37m

$433

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 2/11

8:00 am-6:11 pm

1 stop12h 11m

Helena

Mon 2/16

4:36 pm-9:59 pm

1 stop27h 23m

$474

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Fri 1/30

5:10 pm-10:29 pm

1 stop7h 19m

Helena

Tue 2/3

5:30 am-4:00 pm

1 stop8h 30m

$499

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sun 6/14

5:00 pm-10:34 pm

1 stop7h 34m

Helena

Sat 6/20

5:45 am-6:00 pm

2 stops10h 15m

$664

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sun 3/22

8:00 am-5:45 pm

1 stop11h 45m

Helena

Fri 3/27

6:22 pm-9:59 pm

1 stop25h 37m

$785

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 6/17

6:00 am-12:23 pm

2 stops8h 23m

$295

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sun 6/14

5:00 pm-10:34 pm

1 stop7h 34m

$330

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Mon 6/15

5:00 pm-10:34 pm

1 stop7h 34m

$330

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Tue 6/16

6:00 am-12:23 pm

2 stops8h 23m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 16 results
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Compare providers for flights from Reagan-National 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 Reagan-National to Helena in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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. Reagan-National Airport-Helena flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Reagan-National Airport-Helena flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Helena 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 Washington, D.C. Reagan-National 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 Reagan-National to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Reagan-National 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. Reagan-National Airport to Helena

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

Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Helena (average of $176). Flying from Washington, D.C. Reagan-National Airport to Helena in March is currently the most expensive (average of $361). 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 Reagan-National 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. Reagan-National?

    If you book a flight to Helena from Washington, D.C. Reagan-National, you will be flying to Helena, which is the city’s only airport. Helena (HLN) is located 2.7 mi from the center of Helena. There are 0 flights from Washington, D.C. Reagan-National to Helena per day from 0 different airlines.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Helena?

    There are many flights that can get you from Washington, D.C. Reagan-National Airport to Helena in 7h 19m. Fly via Alaska Airlines or Delta to get the fastest option. Airlines will cover a distance of 1835 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Reagan-National to Helena that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Helena?

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

  • Can I find deals for business class flights from Reagan-National to Helena?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Helena?

    Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Helena (average of $176). Flying from Washington, D.C. Reagan-National Airport to Helena in March is currently the most expensive (average of $361). 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.

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