WAS - HLN

$258 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 7/27. 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

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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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

Fri, Jul 11 - Tue, Jul 15
Delta Logo
5:59 pm - 10:47 pmDCA-HLN
6h 48m1 stop
Delta Logo
5:50 am - 4:46 pmHLN-DCA
8h 56m1 stop
$453Delta
Find Deal
Thu, Sep 11 - Sun, Sep 14
Alaska Airlines Logo
6:09 pm - 3:21 pmIAD-HLN
23h 12m1 stop
Alaska Airlines Logo
4:02 pm - 7:32 amHLN-IAD
13h 30m1 stop
$462Alaska Airlines
Find Deal
Sun, Jul 6 - Fri, Jul 11
Delta Logo
7:35 am - 12:27 pmIAD-HLN
6h 52m1 stop
Delta Logo
1:00 pm - 11:42 pmHLN-IAD
8h 42m1 stop
$473Delta
Find Deal
Fri, Jul 11 - Tue, Jul 15
Alaska Airlines Logo
6:13 pm - 3:31 pmIAD-HLN
23h 18m1 stop
Alaska Airlines Logo
4:09 pm - 7:27 amHLN-IAD
13h 18m1 stop
$480Alaska Airlines
Find Deal
Sun, Sep 14 - Sun, Sep 21
Alaska Airlines Logo
7:22 pm - 3:21 pmBWI-HLN
21h 59m1 stop
Alaska Airlines Logo
4:02 pm - 5:33 amHLN-BWI
11h 31m1 stop
$482Alaska Airlines
Find Deal
Fri, Jul 11 - Tue, Jul 15
Delta Logo
5:59 pm - 10:47 pmDCA-HLN
6h 48m1 stop
Delta Logo
5:50 am - 6:56 pmHLN-DCA
11h 06m2 stops
$488Delta
Find Deal
Fri, Jul 11 - Tue, Jul 15
Alaska Airlines Logo
5:25 pm - 3:31 pmIAD-HLN
24h 06m2 stops
Alaska Airlines Logo
4:09 pm - 7:27 amHLN-IAD
13h 18m1 stop
$488Alaska Airlines
Find Deal
Thu, Sep 11 - Sun, Sep 14
Alaska Airlines Logo
6:09 pm - 3:21 pmIAD-HLN
23h 12m1 stop
Alaska Airlines Logo
4:02 pm - 7:32 amHLN-IAD
13h 30m1 stop
$489Alaska Airlines
Find Deal
Tue, Jul 15 - Tue, Jul 22
United Airlines Logo
2:45 pm - 9:15 pmIAD-HLN
8h 30m1 stop
United Airlines Logo
2:34 pm - 12:45 amHLN-IAD
8h 11m1 stop
$533United Airlines
Find Deal
Sat, Aug 2 - Sat, Aug 9
United Airlines Logo
8:06 pm - 4:55 pmIAD-HLN
22h 49m1 stop
United Airlines Logo
5:39 pm - 5:24 amHLN-IAD
9h 45m1 stop
$545United Airlines
Find Deal
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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.

What’s the cheapest day of the week to fly from Washington, D.C. to Helena?

The average price of all round-trip flights from Washington, D.C. to Helena clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Helena on a Saturday and more expensive on a Wednesday. On your return trip to Washington, D.C., you should consider flying back on a Wednesday, and avoid Tuesdays for better deals.

Good to know

Low seasonApril
High seasonNovember
Best time to beat the crowds with an average 41% drop in price.
Most popular time to fly with an average 60% increase in price.

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 $258 for a one-way ticket and $453 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?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Washington, D.C. and Helena, with SkyTeam being the most commonly used for this route.

  • 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 $624 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $723 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.
8.0
DeltaOverall score based on 7963 reviews
7.3Food
8.2Boarding
7.9Comfort
8.5Crew
7.9Entertainment
Airline reviews

I like for how they process during check in. It was very smoothly.

10.0 ExcellentAbdulla, Jun 2025CMH - JFK
Read more Delta reviews

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

Gate agent did not hold flight for connection, provided no assistance to get new flight

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

United airlines, mediocre at best. No issues , nothing great . Worked for me

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Liked nothing. As per previous segment it was delay delay delay.

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

Information on your arrival and departure airports

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