WAS - HLN

$245 Find Cheap Flights from Washington, D.C. to Helena

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Helena departing on 5/19. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Helena

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Helena, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Helena, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$359
Alaska Airlines
Sat 2/28Wed 3/4
BWI - HLN • 1 stop
Cheapest one-way
$245
Alaska Airlines
Tue 5/19
IAD - HLN • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $359 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Helena!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Helena (WAS-HLN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Helena 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 Washington, D.C. to Helena

Sat, Feb 28 - Wed, Mar 4
Alaska Airlines Logo
6:46 pm - 3:59 pm
BWI
-
HLN
23h 13m
1 stop
Alaska Airlines Logo
4:36 pm - 5:46 pm
HLN
-
BWI
23h 10m
1 stop
$359Alaska Airlines
Mon, Mar 9 - Mon, Mar 16
Delta Logo
5:12 pm - 10:30 pm
DCA
-
HLN
7h 18m
1 stop
Delta Logo
1:02 pm - 2:00 pm
HLN
-
DCA
22h 58m
2 stops
$360Delta
Sun, Mar 1 - Wed, Mar 18
Delta Logo
7:05 am - 12:25 pm
BWI
-
HLN
7h 20m
1 stop
Delta Logo
1:02 pm - 12:53 am
HLN
-
BWI
9h 51m
2 stops
$374Delta
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
6:30 am - 1:40 pm
BWI
-
HLN
9h 10m
2 stops
United Airlines Logo
2:25 pm - 11:25 pm
HLN
-
BWI
7h 00m
1 stop
$387United Airlines
Mon, Mar 23 - Sun, Mar 29
Alaska Airlines Logo
7:00 am - 5:45 pm
IAD
-
HLN
12h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 5:40 am
HLN
-
IAD
9h 18m
1 stop
$394Alaska Airlines
Wed, Mar 4 - Wed, Mar 18
Delta Logo
7:05 am - 12:25 pm
BWI
-
HLN
7h 20m
1 stop
Delta Logo
1:02 pm - 12:53 am
HLN
-
BWI
9h 51m
2 stops
$404Delta
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
6:20 am - 1:40 pm
BWI
-
HLN
9h 20m
2 stops
United Airlines Logo
2:25 pm - 11:25 pm
HLN
-
BWI
7h 00m
1 stop
$405United Airlines
Tue, Mar 3 - Wed, Mar 18
Delta Logo
1:01 pm - 10:27 pm
BWI
-
HLN
11h 26m
2 stops
Delta Logo
1:02 pm - 12:53 am
HLN
-
BWI
9h 51m
2 stops
$409Delta
Tue, Mar 10 - Mon, Mar 16
United Airlines Logo
8:02 am - 1:38 pm
BWI
-
HLN
7h 36m
1 stop
United Airlines Logo
2:30 pm - 11:12 pm
HLN
-
BWI
6h 42m
1 stop
$424United Airlines
Sat, Feb 28 - Mon, Mar 16
United Airlines Logo
4:10 pm - 9:16 pm
BWI
-
HLN
7h 06m
1 stop
United Airlines Logo
2:30 pm - 11:12 pm
HLN
-
BWI
6h 42m
1 stop
$449United Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Helena flights

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

Which airlines provide the cheapest flights from Washington, D.C. to Helena?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. to Helena were found on Alaska Airlines ($359) and Delta ($360).

Good to know

Low seasonApril
Cheapest flight$245
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly with an average 95% increase in price.
Flight from Washington Dulles Airport to Helena

When to book flights from Washington, D.C. to Helena

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Helena 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 flights from Washington, D.C. to Helena

  • What is the cheapest flight from Washington, D.C. to Helena?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Helena was $245 for a one-way ticket and $359 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Helena?

    A passport is not required to fly from Washington, D.C. to Helena.

  • Which airports will I be using when flying from Washington, D.C. to Helena?

    When flying out of Washington, D.C. you will be using one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be landing at Helena.

  • Which aircraft models fly most regularly from Washington, D.C. to Helena?

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

  • How does KAYAK find such low prices on flights from Washington, D.C. to Helena?

    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 Washington, D.C. to Helena.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Helena?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helena from Washington, D.C. 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 Washington, D.C. to Helena?

    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 Helena with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Helena?

    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 Helena from Washington, D.C. 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 Washington, D.C. to Helena

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Helena. 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 Washington, D.C. to Helena? 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 9289 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

6.0 Goodrob, Feb 2026
IAD - YYZ
Read more United Airlines reviews

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

Everything you need to know for your flight from Washington, D.C. to Helena

Information on your arrival and departure airports