WAS - HLN

$210 Find Cheap Flights from Washington, D.C. to Helena - 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 Washington, D.C. to Helena departing on 7/11. 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
$349
Alaska Airlines
Tue 10/27Sat 10/31
IAD - HLN • 1 stop
Cheapest one-way
$210
Delta
Sat 7/11
DCA - HLN • 1 stop
Top airlines
Cheapest • from $349 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Helena. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $575 (round-trip)
Shortest trip • 6h 42m (one-way)
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Tue, Oct 27 - Sat, Oct 31
Alaska Airlines Logo
7:00 am - 4:11 pm
IAD
-
HLN
11h 11m
1 stop
Alaska Airlines Logo
4:48 pm - 5:40 am
HLN
-
IAD
10h 52m
1 stop
$349Alaska Airlines
Mon, Sep 14 - Wed, Sep 30
Delta Logo
7:35 am - 12:17 pm
BWI
-
HLN
6h 42m
1 stop
Delta Logo
7:15 am - 9:30 pm
HLN
-
BWI
12h 15m
2 stops
$379Delta
Sat, Aug 22 - Tue, Aug 25
United Airlines Logo
4:22 pm - 9:30 pm
BWI
-
HLN
7h 08m
1 stop
United Airlines Logo
6:15 am - 3:12 pm
HLN
-
BWI
6h 57m
1 stop
$381United Airlines
Wed, Sep 16 - Wed, Sep 30
Alaska Airlines Logo
7:15 pm - 4:41 pm
BWI
-
HLN
23h 26m
1 stop
Alaska Airlines Logo
5:18 pm - 6:30 am
HLN
-
BWI
11h 12m
1 stop
$384Alaska Airlines
Sat, Aug 22 - Tue, Aug 25
United Airlines Logo
4:22 pm - 9:30 pm
BWI
-
HLN
7h 08m
1 stop
United Airlines Logo
6:15 am - 9:29 pm
HLN
-
BWI
13h 14m
2 stops
$399United Airlines
Mon, Sep 14 - Wed, Sep 30
Delta Logo
7:35 am - 12:17 pm
BWI
-
HLN
6h 42m
1 stop
Delta Logo
7:15 am - 9:30 pm
HLN
-
BWI
12h 15m
2 stops
$412Delta
Wed, Sep 16 - Wed, Sep 30
Alaska Airlines Logo
7:50 am - 4:41 pm
BWI
-
HLN
10h 51m
1 stop
Alaska Airlines Logo
5:18 pm - 6:30 am
HLN
-
BWI
11h 12m
1 stop
$419Alaska Airlines
Wed, Sep 9 - Wed, Sep 23
Alaska Airlines Logo
7:00 am - 4:41 pm
IAD
-
HLN
11h 41m
1 stop
Alaska Airlines Logo
5:18 pm - 5:40 am
HLN
-
IAD
10h 22m
1 stop
$419Alaska Airlines
Sat, Aug 22 - Tue, Aug 25
United Airlines Logo
10:25 am - 9:30 pm
BWI
-
HLN
13h 05m
2 stops
United Airlines Logo
6:15 am - 9:29 pm
HLN
-
BWI
13h 14m
2 stops
$437United Airlines
Sun, Oct 4 - Sat, Oct 10
United Airlines Logo
6:35 am - 1:48 pm
IAD
-
HLN
9h 13m
1 stop
United Airlines Logo
2:30 pm - 11:25 pm
HLN
-
IAD
6h 55m
1 stop
$446United 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 5 days.

In the past 5 days, the cheapest round-trip tickets from Washington, D.C. to Helena were found on Alaska Airlines ($349) and Delta ($379).

Good to know

Cheapest flight$210
Flight from Reagan Washington National 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 5 days, the lowest price for a flight from Washington, D.C. to Helena was $210 for a one-way ticket and $349 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.

  • Which airline alliances offer flights from Washington, D.C. to Helena?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and Helena.

  • Which is the best airline for flights from Washington, D.C. to Helena, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Helena are Delta and United Airlines. With an average price for the route of $689 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $571 and an overall rating of 7.4.

  • 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 airlines 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.
7.8
DeltaOverall score based on 8451 reviews
8.5Crew
7.2Food
8.1Boarding
7.8Entertainment
7.8Comfort
Airline reviews

The gentleman at the gate I think his name is RIE was exceptional

10.0 ExcellentGireesh, Apr 2026
DCA - DTW
Read more Delta reviews

The gentleman at the gate I think his name is RIE was exceptional

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

I wouldn't say I liked being forced to check my small roller bag at the gate; too many people had bags and were in a higher boarding group.

715PM departure was 2.5 hours late. Received hotel & food voucher but after we already booked a room. Entire team just seemed like they were 2-3 steps behind in execution, and notifcations.

One of the best crews and best flights I’ve ever had! Really great experience

The bus ride from the terminal to board the plane is uncomfortable and stressful when making a connection.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

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.

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.

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

Information on your arrival and departure airports