HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Reagan-National

$284+ Cheap flights from Helena (HLN) to Reagan-National (DCA)

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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — DCA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Helena to Reagan-National 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 Helena to Reagan-National

Best flights from Helena to Reagan-National
Discover carefully curated flight deals from Helena to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/9. 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 1/216:48 pmHLN - DCA
1 stop25h 11mAlaska Airlines
Sat 1/248:00 amDCA - HLN
1 stop12h 11mAlaska Airlines
Deal found 12/9$364
This United Airlines deal was found by Cheapflights users on 12/10. 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 1/216:15 amHLN - DCA
2 stops14h 22mUnited Airlines
Sat 1/246:30 amDCA - HLN
2 stops16h 56mUnited Airlines
Deal found 12/10$694
This Alaska Airlines deal was found by Cheapflights users on 12/11. 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 2/224:36 pmHLN - DCA
2 stops26h 26mAlaska Airlines
Thu 2/266:59 pmDCA - HLN
2 stops23h 00mAlaska Airlines
Deal found 12/11$474
This Alaska Airlines deal was found by Cheapflights users on 12/10. 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 1/106:48 pmHLN - DCA
2 stops24h 12mAlaska Airlines
Wed 1/148:00 amDCA - HLN
1 stop12h 11mAlaska Airlines
Deal found 12/10$584

Find flight deals from Helena to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Reagan-National (DCA). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$364
(Alaska Airlines)

One-way from

$284
(KAYAK)
Provider with most accurate pricing for Helena-Washington, D.C. Reagan-National flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-Washington, D.C. Reagan-National flights.
Search Deals
From Helena to Washington, D.C. Reagan-National
Search Deals
One-way flight from Helena to Washington, D.C. Reagan-National
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Helena to Reagan-National 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 December 12, 2025.
Use the filters below to find and compare flights from Helena to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Helena

Fly to

Reagan-National

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 1/21

6:48 pm-9:59 pm

1 stop25h 11m

Washington, D.C. Reagan-National

Sat 1/24

8:00 am-6:11 pm

1 stop12h 11m

$364

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sun 2/22

4:36 pm-9:02 pm

2 stops26h 26m

Washington, D.C. Reagan-National

Thu 2/26

6:59 pm-3:59 pm

2 stops23h 00m

$474

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 1/10

6:48 pm-9:00 pm

2 stops24h 12m

Washington, D.C. Reagan-National

Wed 1/14

8:00 am-6:11 pm

1 stop12h 11m

$584

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 1/21

6:15 am-10:37 pm

2 stops14h 22m

Washington, D.C. Reagan-National

Sat 1/24

6:30 am-9:26 pm

2 stops16h 56m

$694

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Thu 12/18

5:30 am-4:01 pm

1 stop8h 31m

$284

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sun 1/4

6:32 pm-4:05 pm

1 stop19h 33m

$553

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Fri 1/2

6:10 am-2:59 pm

1 stop6h 49m

$567

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 1/3

6:32 pm-4:05 pm

1 stop19h 33m

$704

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sun 1/4

6:10 am-7:28 pm

2 stops11h 18m

$755

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 1/3

2:26 pm-8:28 am

2 stops16h 02m

$848

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from Helena to Reagan-National

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 Reagan-National in December.
ProviderPrice AccuracyTrust Score*
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 Helena-Washington, D.C. Reagan-National Airport 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. Reagan-National Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Helena-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helena-Washington, D.C. Reagan-National Airport 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. Reagan-National Airport 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 Reagan-National

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

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

Currently, April is the cheapest month in which you can book a flight from Helena to Washington, D.C. Reagan-National Airport (average of $158). Flying from Helena to Washington, D.C. Reagan-National Airport in November is currently the most expensive (average of $373). 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 Reagan-National. 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. Reagan-National?

    If you book a flight to Washington, D.C. Reagan-National from Helena, you will be flying from 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 Helena to Washington, D.C. Reagan-National per day from 0 different airlines.

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

    Alaska Airlines can get you from Helena to Washington, D.C. Reagan-National Airport in just under 25h 11m. Your travel time can differ by up to . The distance between Helena and Washington, D.C. Reagan-National Airport is about 1835 mi.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Helena to Washington, D.C. Reagan-National Airport (average of $158). Flying from Helena to Washington, D.C. Reagan-National Airport in November is currently the most expensive (average of $373). 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. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of 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.