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Helena

$515+ Cheap flights from Reagan-National (DCA) to Helena (HLN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — HLN
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$515
(Trip.com)

Popular in

November

Cheapest in

April

Average price

$564
From Washington, D.C. Reagan-National to Helena
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Highest demand for flights based on searches. 10% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 16, 2025.

This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:00 amDCA - HLN
1 stop11h 36mAlaska Airlines
Wed 11/56:13 pmHLN - DCA
1 stop25h 46mAlaska Airlines
Deal found 9/14$515
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:00 amDCA - HLN
1 stop11h 41mAlaska Airlines
Tue 10/216:18 pmHLN - DCA
1 stop25h 41mAlaska Airlines
Deal found 9/16$572
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/95:03 pmDCA - HLN
1 stop26h 38mAlaska Airlines
Tue 10/146:18 pmHLN - DCA
1 stop25h 41mAlaska Airlines
Deal found 9/15$582
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:25 amDCA - HLN
2 stops12h 15mUnited Airlines
Tue 10/145:18 pmHLN - DCA
2 stops13h 03mUnited Airlines
Deal found 9/15$656
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/95:03 pmDCA - HLN
1 stop26h 38mAlaska Airlines
Mon 10/136:18 pmHLN - DCA
1 stop25h 41mAlaska Airlines
Deal found 9/15$657
This Trip.com deal was found by Cheapflights users on 9/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:06 pmDCA - HLN
1 stop26h 35mHawaiian Airlines
Sun 10/196:18 pmHLN - DCA
1 stop25h 41mHawaiian Airlines
Deal found 9/13$708

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 September 16, 2025.
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

Wed 10/29

8:00 am-5:36 pm

1 stop11h 36m

Helena

Wed 11/5

6:13 pm-9:59 pm

1 stop25h 46m

$515

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sat 2/14

5:30 pm-3:43 pm

1 stop24h 13m

Helena

Fri 2/20

4:10 pm-9:55 pm

1 stop27h 45m

$568

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Fri 10/17

8:00 am-5:41 pm

1 stop11h 41m

Helena

Tue 10/21

6:18 pm-9:59 pm

1 stop25h 41m

$572

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Thu 10/9

6:25 am-4:40 pm

2 stops12h 15m

Helena

Tue 10/14

5:18 pm-8:21 am

2 stops13h 03m

$656

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Thu 10/9

5:03 pm-5:41 pm

1 stop26h 38m

Helena

Tue 10/14

6:18 pm-8:29 pm

2 stops24h 11m

$691

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Tue 9/30

4:23 pm-9:00 pm

1 stop6h 37m

Helena

Sat 10/4

6:30 am-3:07 pm

1 stop6h 37m

$737

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Helena (average of $353). Flying from Washington, D.C. Reagan-National Airport to Helena in May is currently the most expensive (average of $517). 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 11h 36m. Fly via Alaska Airlines to get the fastest option. Airlines will cover a distance of 1835 mi.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Helena (average of $353). Flying from Washington, D.C. Reagan-National Airport to Helena in May is currently the most expensive (average of $517). 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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