HLN - DCA

$175 Find Cheap Flights from Helena to Reagan Washington National Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to Reagan-National departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$419
Delta
Thu 7/16Mon 7/20
HLN - DCA • 1 stop
Cheapest one-way
$175
Delta
Thu 8/20
HLN - DCA • 1 stop
Top airlines
Delta
Cheapest • from $419 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Helena and Reagan-National. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Denver (DEN)
Cheapest • Avg $718 (round-trip)
Denver (DEN)
Shortest trip • 6h 45m (one-way)
Insights
Insights
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Insights
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Booking Insights
Flight Deals

Cheap Flights from Helena to Reagan-National (HLN-DCA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to Reagan-National that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Helena to Reagan-National

Thu, Jul 16 - Mon, Jul 20
Delta Logo
5:40 am - 4:35 pm
HLN
-
DCA
8h 55m
1 stop
Delta Logo
5:45 pm - 10:39 pm
DCA
-
HLN
6h 54m
1 stop
$419Delta
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
7:00 am - 2:56 pm
HLN
-
DCA
5h 56m
1 stop
United Airlines Logo
4:07 pm - 8:59 pm
DCA
-
HLN
6h 52m
1 stop
$514United Airlines
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
7:00 am - 2:56 pm
HLN
-
DCA
5h 56m
1 stop
United Airlines Logo
6:00 am - 8:59 pm
DCA
-
HLN
16h 59m
2 stops
$552United Airlines
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
7:00 am - 2:56 pm
HLN
-
DCA
5h 56m
1 stop
United Airlines Logo
4:07 pm - 8:59 pm
DCA
-
HLN
6h 52m
1 stop
$594United Airlines
Tue, Sep 22 - Sun, Sep 27
Alaska Airlines Logo
5:18 pm - 9:59 pm
HLN
-
DCA
26h 41m
1 stop
Alaska Airlines Logo
10:59 am - 4:41 pm
DCA
-
HLN
31h 42m
2 stops
$621Alaska Airlines
Tue, Sep 22 - Sun, Sep 27
Alaska Airlines Logo
5:18 pm - 9:00 pm
HLN
-
DCA
25h 42m
2 stops
Alaska Airlines Logo
10:59 am - 4:41 pm
DCA
-
HLN
31h 42m
2 stops
$626Alaska Airlines
Tue, Sep 22 - Sun, Sep 27
Alaska Airlines Logo
5:18 pm - 9:59 pm
HLN
-
DCA
26h 41m
1 stop
Alaska Airlines Logo
5:00 pm - 4:41 pm
DCA
-
HLN
25h 41m
1 stop
$627Alaska Airlines
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
7:00 am - 2:56 pm
HLN
-
DCA
5h 56m
1 stop
United Airlines Logo
6:00 am - 8:59 pm
DCA
-
HLN
16h 59m
2 stops
$632United Airlines
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
2:30 pm - 8:19 am
HLN
-
DCA
15h 49m
2 stops
United Airlines Logo
4:07 pm - 8:59 pm
DCA
-
HLN
6h 52m
1 stop
$638United Airlines
Sat, Dec 5 - Tue, Dec 8
United Airlines Logo
7:00 am - 2:56 pm
HLN
-
DCA
5h 56m
1 stop
United Airlines Logo
6:00 am - 1:27 pm
DCA
-
HLN
33h 27m
3 stops
$654United Airlines
Booking Insights

KAYAK's insights & trends for Helena to Reagan-National flights

Get data-powered insights and trends into flights from Helena to Reagan-National to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Helena to Reagan Washington National Airport?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Helena to Reagan Washington National Airport were found on Delta ($419) and United Airlines ($514).

Find deals

Good to know

Cheapest flight$175
Flight from Helena to Reagan Washington National Airport

When to book flights from Helena to Reagan-National

Are your dates flexible? Find out the best times to travel from Helena to Reagan-National based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Helena to Reagan Washington National Airport flights

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

    In the last 5 days, the lowest price for a flight from Helena to Washington, D.C. Reagan-National Airport was $175 for a one-way ticket and $419 for a round-trip.

  • Do I need a passport to fly between Helena and Reagan Washington National Airport?

    No, a passport isn't needed to fly from Helena to Reagan Washington National Airport. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Helena to Reagan Washington National Airport?

    When flying out of Helena you will be using Helena. You will be landing at Reagan Washington National Airport, also known as Washington, D.C. Reagan-National.

  • Which aircraft models fly most regularly from Helena to Reagan Washington National Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Helena to Reagan Washington National Airport?

    Star Alliance is the only airline alliance operating flights between Helena and Reagan Washington National Airport.

  • How does KAYAK find such low prices on flights from Helena to Reagan Washington National Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Helena to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Helena to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Helena is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Helena to Reagan Washington National Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reagan Washington National Airport with an airline and back to Helena with another airline. Booking your flights between Helena and DCA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Helena to Reagan Washington National Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reagan Washington National Airport from Helena up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Helena to Reagan-National

 
See real verified KAYAK customer reviews for airlines flying from Helena to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Helena to Reagan-National? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9938 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

2.0 MediocreAnonymous, Jun 2026
TPA - IAD
Read more United Airlines reviews

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

The entertainment wasn’t playing in the app or online.

Everything you need to know for your flight from Helena to Reagan-National

Information on your arrival and departure airports

Helena (HLN)
Reagan-National (DCA)