HLN - SEA

$109 Find Cheap Flights from Helena to Seattle

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 Seattle departing on 11/1. 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 Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Seattle, 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 Helena to Seattle, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Helena to Seattle (HLN-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to Seattle 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 Seattle

Sat, Oct 18 - Tue, Oct 21
Hawaiian Airlines Logo
6:18 pm - 7:10 pmHLN-SEA
1h 52mnonstop
Hawaiian Airlines Logo
3:07 pm - 5:41 pmSEA-HLN
1h 34mnonstop
$177Hawaiian Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 23
Hawaiian Airlines Logo
6:13 pm - 7:02 pmHLN-SEA
1h 49mnonstop
Hawaiian Airlines Logo
4:07 pm - 6:52 pmSEA-HLN
1h 45mnonstop
$217Hawaiian Airlines
Find Deal
Thu, Nov 6 - Mon, Nov 10
Hawaiian Airlines Logo
6:13 pm - 7:02 pmHLN-SEA
1h 49mnonstop
Hawaiian Airlines Logo
3:00 pm - 5:36 pmSEA-HLN
1h 36mnonstop
$228Hawaiian Airlines
Find Deal
Sat, Oct 18 - Tue, Oct 21
Delta Logo
1:00 pm - 6:24 pmHLN-SEA
6h 24m1 stop
Delta Logo
5:25 am - 12:20 pmSEA-HLN
5h 55m1 stop
$247Delta
Find Deal
Wed, Sep 17 - Wed, Sep 24
United Airlines Logo
5:20 pm - 10:59 pmHLN-SEA
6h 39m1 stop
United Airlines Logo
5:02 am - 1:30 pmSEA-HLN
7h 28m1 stop
$277United Airlines
Find Deal
Fri, Sep 12 - Mon, Sep 15
United Airlines Logo
5:20 pm - 10:59 pmHLN-SEA
6h 39m1 stop
United Airlines Logo
5:02 am - 1:30 pmSEA-HLN
7h 28m1 stop
$337United Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 23
Delta Logo
1:06 pm - 4:55 pmHLN-SEA
4h 49m1 stop
Delta Logo
7:12 pm - 12:26 pmSEA-HLN
16h 14m1 stop
$371Delta
Find Deal
Fri, Oct 3 - Sun, Oct 5
United Airlines Logo
5:18 pm - 11:29 pmHLN-SEA
7h 11m1 stop
United Airlines Logo
5:00 am - 2:09 pmSEA-HLN
8h 09m1 stop
$397United Airlines
Find Deal
Sat, Oct 18 - Tue, Oct 21
 Logo
2:42 pm - 9:24 pmHLN-SEA
7h 42m1 stop
 Logo
3:07 pm - 5:41 pmSEA-HLN
1h 34mnonstop
Thu, Nov 6 - Mon, Nov 10
 Logo
2:22 pm - 9:13 pmHLN-SEA
7h 51m1 stop
 Logo
3:00 pm - 5:36 pmSEA-HLN
1h 36mnonstop
Booking Insights

KAYAK's insights & trends for Helena to Seattle flights

Get data-powered insights and trends into flights from Helena to Seattle 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 Helena to Seattle?

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

For Helena to Seattle, Thursday is the cheapest day to fly on average and Friday is the most expensive. Flying from Seattle back to Helena, the best deals are generally found on Friday, with Wednesday being the most expensive.

What is the cheapest month to fly from Helena to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Helena to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Helena to Seattle is January, where tickets cost $197 (return) on average. On the other hand, the most expensive months are November and March, where the average cost of round-trip tickets is $488 and $343 respectively.

Good to know

Low seasonJanuary
Cheapest flight$109
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Helena to Seattle

When to book flights from Helena to Seattle

Are your dates flexible? Find out the best times to travel from Helena to Seattle 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 Helena to Seattle

  • What is the cheapest flight from Helena to Seattle?

    In the last 3 days, the lowest price for a flight from Helena to Seattle was $109 for a one-way ticket and $177 for a round-trip.

  • Do I need a passport to fly between Helena and Seattle?

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

  • Which airports will I be using when flying from Helena to Seattle?

    Helena and Seattle are both served by 1 main airport. You will leave Helena from Helena and will be arriving at Seattle/Tacoma Intl.

  • Which airlines offer Wi-Fi service onboard planes from Helena to Seattle?

    Alaska Airlines, American Airlines, and JetBlue offer inflight Wi-Fi service on the Helena to Seattle flight route.

  • Which aircraft models fly most regularly from Helena to Seattle?

    The Embraer 175 is the aircraft model that flies most regularly on the Helena to Seattle flight route.

  • Which airline alliances offer flights from Helena to Seattle?

    oneworld, and SkyTeam are the airline alliances operating flights between Helena and Seattle, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Helena to Seattle?

    There are nonstop flights from Helena to Seattle on a daily basis.

  • Which is the best airline for flights from Helena to Seattle, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Helena to Seattle are Alaska Airlines and Delta. With an average price for the route of $279 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $551 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Helena to Seattle?

    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 Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle 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 Seattle?

    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 Seattle with an airline and back to Helena with another airline. Booking your flights between Helena and SEA 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 Seattle?

    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 Seattle from Helena up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Helena to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $104 or less one-way and $273 or less round-trip.

Prefer to fly direct from Helena to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Helena to Seattle/Tacoma Intl.
Find which airlines fly direct from Helena Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Helena to Seattle/Tacoma Intl

Monday

Alaska Airlines, Hawaiian Airlines, Korean Air

Alaska Airlines, Hawaiian Airlines, +1 more

Tuesday

Alaska Airlines, Hawaiian Airlines, Korean Air

Alaska Airlines, Hawaiian Airlines, +1 more

Wednesday

Alaska Airlines, Hawaiian Airlines, Korean Air

Alaska Airlines, Hawaiian Airlines, +1 more

Thursday

Alaska Airlines, Hawaiian Airlines, Korean Air

Alaska Airlines, Hawaiian Airlines, +1 more

Friday

Alaska Airlines, Hawaiian Airlines, Korean Air

Alaska Airlines, Hawaiian Airlines, +1 more

Saturday

Alaska Airlines, Hawaiian Airlines, Korean Air

Alaska Airlines, Hawaiian Airlines, +1 more

Sunday

Alaska Airlines, Hawaiian Airlines, Korean Air

Alaska Airlines, Hawaiian Airlines, +1 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Helena

Monday

Alaska Airlines, Hawaiian Airlines, Korean Air, +1 more

Alaska Airlines, Hawaiian Airlines, +2 more

Tuesday

Alaska Airlines, Hawaiian Airlines, Korean Air, +1 more

Alaska Airlines, Hawaiian Airlines, +2 more

Wednesday

Alaska Airlines, Hawaiian Airlines, Korean Air, +1 more

Alaska Airlines, Hawaiian Airlines, +2 more

Thursday

Alaska Airlines, Hawaiian Airlines, Korean Air, +1 more

Alaska Airlines, Hawaiian Airlines, +2 more

Friday

Alaska Airlines, Hawaiian Airlines, Korean Air, +1 more

Alaska Airlines, Hawaiian Airlines, +2 more

Saturday

Alaska Airlines, Hawaiian Airlines, Korean Air, +1 more

Alaska Airlines, Hawaiian Airlines, +2 more

Sunday

Alaska Airlines, Hawaiian Airlines, Korean Air, +1 more

Alaska Airlines, Hawaiian Airlines, +2 more

See more direct flights

Reviews of the top 3 airlines serving from Helena to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Helena to Seattle. 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 Seattle? 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
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
8.1Boarding
7.8Comfort
7.0Entertainment
8.5Crew
Airline reviews

We received a check-in reminder the day before the flight, and it listed the flight at a later time. Correct flight number, same seats, etc. for 3 hours later. I called the airline to confirm and they had no record of the email. The info was wrong, and we would have missed our flight if we'd assumed it was correct. I want to know where/how we received this incorrect info.

8.0 ExcellentAnonymous, Aug 2025ANC - SEA
Read more Alaska Airlines reviews

We received a check-in reminder the day before the flight, and it listed the flight at a later time. Correct flight number, same seats, etc. for 3 hours later. I called the airline to confirm and they had no record of the email. The info was wrong, and we would have missed our flight if we'd assumed it was correct. I want to know where/how we received this incorrect info.

Middle seat, elbow wars. I cannot understand why they load the front of the plane first. You would think it would be more efficient to load the back to the front. I believe it is. And it needs to be changed.

Paid extra $230 to check frozen fish on arrival to LAX. I was told my bags miss my flight and we’re gonna be on the next flight that comes in two hours later regrettably my family was here to pick me up so I had to drive all the way home to drop them off then turn around and come back if I had waited on Alaska to deliver them they told me that they would be delivered in 4 to 6 hours after 8 AM tomorrow which would’ve caused the fish to spoil stink and be a lost cause they would’ve put about $2500 worth of fish down the drain very unhappy with Alaska Airlines for not getting my baggage here, especially since I had to pay for the extra service

I was very pleased with this trip from Anchorage to Seattle and Seattle to Billings. Wheelchair assistance was rendered and gratefully accepted. Unlike my outbound flights to Seattle I did not have long, painful walks on a bad knee to get to airport gates. My thanks to the Alaska staff.

No issues at all other than the seats. Of all the airlines I've flown on in my life (this was my first with Alaska Airlines), these were significantly the most uncomfortable seats I've had - more so than Spirit Airlines. I'm a relatively young guy and mostly fit but oof, i was aching in muscles I didn't even know I had. Not sure if the seats are standard for the plane (if it even works like that) or if the choice to use cardboard as cushion and 90 degree angle back rests was a decision, but it wouldn't honestly make me think twice about flying with them again. Other than that - perfect flight. It was quick, crew was nice, ride was smooth so all things considered I appreciate the last minute availability offered after a sudden relocation on my part.

Short flight was fine, but no entertainment and bathrooms broken.

All went smoothly. Only one delay departing Seattle of around 30 minutes.

We were in 1st class. Haven’t flown 1st class in over 35 years. This was special trip. 30yr anniversary and family travel. Food was good for airline food. Crew was very attentive.i expected easier movie access. Had to use own device. Second leg with Hawaiian airlines was exceptional in every way.

I paid for a window seat and on both flights I was put in the middle seat. Then on my flight to seattle I had to sit next to a passenger with a cat. I'm allergic to cats. So I sneezed, and had a running nose all flight.

Since the flight was delayed, snacks and water were provided.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Attendants seemed un-engaged and indifferent when asked for assistance.

Overall it was a good flight. The thing I most appreciated was that you eliminated plastic cups and water bottles and stir sticks and had paper cups, wood stir sticks and cans. Plus, I saw that the airline staff were actually keeping the used paper cups separate and unfolding the used cardboard meal boxes and keeping those items separate from the trash. Good for them! This makes me want to support Alaska Airlines and fly Alaska again. Thank for taking this step in working to reduce single use plastics! Kudos!

It was pretty good except there was no food, which was understandable because it was a short flight but I would have liked to at least have a snack; otherwise it was great. Staff/crew, great. Thank you

I was on Alaska and its backup airline. I was scheduled for wheelchair service but ON ONE SHOWED UP. When I asked, desk attendant said they didn’t have any.

As noted above, getting on to the plane was rushed and upsetting since no boarding passes were available to me prior to boarding. Others were in line waiting as well. The flight and experience itself was fine. Very large plane. Two seats near windows; 4 seats in the middle aisles. Good leg room though and comfortable seats.

The trip was fine, however once we reached Seattle, our next flight only had an hour turn-around time and we had to cross the entire Seattle airport, taking three shuttles. Once there, Alaska/Hawaiian Air had still not issued my boarding passes to us and we had to wait at the counter for them. Boarding was already started and at the second to last seating level when we finally got our boarding passes. This was a bit nuts.

I am disappointed with Alaska. They are just like the cheapo airlines, nickle and dimeing us for everything. We now have to pay extra to pick our seats? Really?

I could not use my Hawaiian airlines confirmation number to check in. I figured out on my own that I had to use Alaska airlines confirmation number to check in on the Alaska airlines site. I called Hawaiian airlines and they told me that they could not help me.

Alaska Airlines crew had the empty two people seats but they lied to us and said they can adjust us , so we have to seat apart

Ok but why they need to sell the ear buds?

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