$216 Cheap Flights from Helena (HLN) to Washington (DCA)

View $216 flight on Wed, Dec 17, 2025Opens in a new window

Popular airlines from Helena, MT (HLN-Helena Regional) to Ronald Reagan Washington National Airport (DCA)

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Cheap Flights from Helena to Washington (HLN-DCA)

Prices were available within the past 7 days and start at $216 for one-way flights and $436 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Oct 22 - Sat, Oct 25
HLN
Helena
DCA
Washington
$436 Roundtrip, found 5 days ago
$436
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 22 from Helena to Washington, returning Sat, Oct 25, priced at $436 found 5 days ago
Delta
Wed, Oct 22 - Sat, Oct 25
HLN
Helena
DCA
Washington
$440 Roundtrip, found 5 days ago
$440
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 22 from Helena to Washington, returning Sat, Oct 25, priced at $440 found 5 days ago
Delta
Wed, Oct 22 - Sat, Oct 25
HLN
Helena
DCA
Washington
$441 Roundtrip, found 5 days ago
$441
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 22 from Helena to Washington, returning Sat, Oct 25, priced at $441 found 5 days ago
Hawaiian Airlines
Fri, Nov 7 - Sat, Nov 15
HLN
Helena
DCA
Washington
$442 Roundtrip, found 4 days ago
$442
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Fri, Nov 7 from Helena to Washington, returning Sat, Nov 15, priced at $442 found 4 days ago
Hawaiian Airlines
Wed, Sep 10 - Sat, Sep 13
HLN
Helena
DCA
Washington
$452 Roundtrip, found 5 days ago
$452
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Wed, Sep 10 from Helena to Washington, returning Sat, Sep 13, priced at $452 found 5 days ago
Delta
Tue, Sep 9 - Sat, Sep 13
HLN
Helena
DCA
Washington
$455 Roundtrip, found 3 days ago
$455
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Sep 9 from Helena to Washington, returning Sat, Sep 13, priced at $455 found 3 days ago
Hawaiian Airlines
Tue, Nov 11 - Sun, Nov 16
HLN
Helena
DCA
Washington
$461 Roundtrip, found 4 days ago
$461
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Nov 11 from Helena to Washington, returning Sun, Nov 16, priced at $461 found 4 days ago
United
Wed, Dec 17 - Fri, Jan 2
HLN
Helena
DCA
Washington
$465 Roundtrip, found 1 day ago
$465
Roundtrip
found 1 day ago
Select United flight, departing Wed, Dec 17 from Helena to Washington, returning Fri, Jan 2, priced at $465 found 1 day ago
United
Wed, Dec 17 - Fri, Jan 2
HLN
Helena
DCA
Washington
$469 Roundtrip, found 1 day ago
$469
Roundtrip
found 1 day ago
Select United flight, departing Wed, Dec 17 from Helena to Washington, returning Fri, Jan 2, priced at $469 found 1 day ago
Alaska Airlines
Tue, Nov 11 - Sat, Nov 15
HLN
Helena
DCA
Washington
$522 Roundtrip, found 6 days ago
$522
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Nov 11 from Helena to Washington, returning Sat, Nov 15, priced at $522 found 6 days ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Baltimore Washington Intl. Thurgood Marshall BWI. Cheapest option available. Average driving time to city center is 40 minutes. Flights from $561
BWI
Baltimore Washington Intl. Thurgood Marshall
Cheapest
Average driving time to city center40 min
Flights from $561
Select flight to Washington Dulles Intl. IAD. Average driving time to city center is 36 minutes. Flights from $603
IAD
Washington Dulles Intl.
Average driving time to city center36 min
Flights from $603
Flights from Helena (HLN) to Washington (DCA)
Origin airport
Helena Regional
Destination airport
Ronald Reagan Washington National
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$436
Distance
1835 mi

Helena to Washington Flights

The cheapest times to fly from Helena to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Helena to Washington are during the month of October. You can find some of the cheapest flights from Helena to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Helena to Washington

Sunday is one of the best days to book for cheap flights from Helena to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Helena to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Helena to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $216 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Helena to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Helena to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA) cost?
Grab a cheap one-way flight from $216 or cheap return flight from $436 from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA)?
Planning your getaway for October can help you save, as it's the cheapest month for flights between HLN and DCA. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from HLN to DCA. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA)?
You'll have to book a flight with a layover if you're traveling from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from HLN to DCA?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA)?
Select a flight from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA) last-minute?
Last-minute bookings from HLN to DCA are usually more expensive. To secure the lowest rates, start searching for flights early. That said, if your travel plans are flexible, it's possible to score a cheap fare right before you leave.
Is it cheaper to book a HLN to DCA flight and hotel package?
Compared with arranging hotels and flights separately, booking a HLN to DCA flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of travel planning. Simply secure your flights and select from our wide range of hotels, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Helena Regional Airport (HLN) to Ronald Reagan Washington National Airport (DCA)?
In most cases, you can modify or cancel your HLN to DCA flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need further information, visit our Customer Service portal.

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*Available to One Key members.