HLN - SEA

$157 Find Cheap Flights from Helena to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to Seattle departing on 1/28. 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 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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Everything you should know

Cheapest round-trip
$157
Overall average: $197
Alaska Airlines
Wed 1/28Sat 1/31
HLN - SEA • Non-stop
Cheapest one-way
$189
Alaska Airlines
Sat 12/20
HLN - SEA • Non-stop
Top airlines
Alaska Airlines
Cheapest • from $157 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 30% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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 Seattle!
Flight Deals
Booking Insights
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

Wed, Jan 28 - Sat, Jan 31
Alaska Airlines Logo
6:48 pm - 7:47 pmHLN-SEA
1h 59mnonstop
Alaska Airlines Logo
3:31 pm - 6:11 pmSEA-HLN
1h 40mnonstop
$157Alaska Airlines
Find Deal
Sat, Jan 17 - Sun, Jan 18
Hawaiian Airlines Logo
6:48 pm - 7:47 pmHLN-SEA
1h 59mnonstop
Hawaiian Airlines Logo
3:31 pm - 6:11 pmSEA-HLN
1h 40mnonstop
$158Hawaiian Airlines
Find Deal
Thu, Jan 15 - Tue, Jan 20
Alaska Airlines Logo
6:48 pm - 7:47 pmHLN-SEA
1h 59mnonstop
Alaska Airlines Logo
3:31 pm - 6:11 pmSEA-HLN
1h 40mnonstop
$167Alaska Airlines
Find Deal
Fri, Jan 16 - Sun, Jan 18
Alaska Airlines Logo
6:48 pm - 7:47 pmHLN-SEA
1h 59mnonstop
Alaska Airlines Logo
3:31 pm - 6:11 pmSEA-HLN
1h 40mnonstop
$177Alaska Airlines
Find Deal
Thu, Jan 15 - Tue, Jan 20
Delta Logo
1:10 pm - 6:29 pmHLN-SEA
6h 19m1 stop
Delta Logo
5:30 am - 12:27 pmSEA-HLN
5h 57m1 stop
$182Delta
Find Deal
Wed, Dec 31 - Fri, Jan 2
Alaska Airlines Logo
6:32 pm - 7:27 pmHLN-SEA
1h 55mnonstop
Alaska Airlines Logo
3:17 pm - 5:55 pmSEA-HLN
1h 38mnonstop
$187Alaska Airlines
Find Deal
Fri, Jan 16 - Sun, Jan 18
Delta Logo
1:10 pm - 6:29 pmHLN-SEA
6h 19m1 stop
Delta Logo
5:25 am - 12:27 pmSEA-HLN
6h 02m1 stop
$197Delta
Find Deal
Thu, Jan 15 - Sun, Jan 18
Delta Logo
1:10 pm - 6:29 pmHLN-SEA
6h 19m1 stop
Delta Logo
5:25 am - 12:27 pmSEA-HLN
6h 02m1 stop
$217Delta
Find Deal
Sat, Jan 17 - Sun, Jan 18
Hawaiian Airlines Logo
6:48 pm - 7:47 pmHLN-SEA
1h 59mnonstop
Hawaiian Airlines Logo
12:25 pm - 9:26 pmSEA-HLN
8h 01m1 stop
$250Hawaiian Airlines
Find Deal
Sat, Jan 17 - Tue, Jan 20
Delta Logo
5:30 am - 6:23 pmHLN-SEA
13h 53m2 stops
Delta Logo
5:30 am - 12:27 pmSEA-HLN
5h 57m1 stop
$251Delta
Find Deal
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 Sunday is the most expensive. Flying from Seattle back to Helena, the best deals are generally found on Monday, 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 $343 and $340 respectively.

Good to know

Low seasonJanuary
Cheapest flight$157
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 5% increase in price.
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 $189 for a one-way ticket and $157 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, 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 is the only airline alliance operating flights between Helena and Seattle.

  • 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 Hawaiian Airlines?

    The two airlines most popular with KAYAK users for flights from Helena to Seattle are Alaska Airlines and Hawaiian Airlines. With an average price for the route of $287 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Hawaiian Airlines is also a great choice for the route, with an average price of $268 and an overall rating of 7.8.

  • 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 $259 or less one-way and $285 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

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Direct returns

Seattle/Tacoma Intl to Helena

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Reviews of the top airlines flying 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 11391 reviews
8.1Boarding
8.5Crew
7.1Food
7.8Comfort
7.0Entertainment
Airline reviews

Larger seats and more room would elevate the experience. Otherwise, it was good!

10.0 ExcellentAnonymous, Dec 2025SJC - SEA
Read more Alaska Airlines reviews

Larger seats and more room would elevate the experience. Otherwise, it was good!

The rice pudding was terrible. The bread with the hummus was fair. The ravioli was okay. The snacks were great. The two delays were not pleasant. In the beginning I understand, but on arrival we sat for about 30 minutes before getting at the gate.

We appreciated that the flight attendant came through 3 times with drinks or water on the long flight..I was also glad that they were separating out recycling! I would have liked a 12oz sofa can instead of 7oz, but that's a minor quibble. The knee space in economy was also better than most of Alaska's competitors.

No beverages were served on the flight to Vegas as there was turbulence. It was actually one the smoothest flights that I have ever been on. My return flight home I upgraded my seat for $87 and the crew came through the cabin and served every row except mine drinks... I was waiting for them to come back and they never did. I most likely would never fly Alaska again. It was my first time and I've had better service on Frontier... Might as well pay less for my flight and still get to purchase something to drink than pay more and get passed over.

Leg and arm room are horrible. I am not a big person and found it tight.

It was good except there was a loud rattle from the window on aisle 10 DEF,

Had no way to see what gate came in on or what gate connecting flight would take off.

If they loaded the back of the plane first, loading would go faster

I liked the free snacks and drink. I liked the onboard entertainment. I did not like the WiFi cutting out in middle of my movie.

The small ej plane didn’t have any entertainment aside from the stuff on the Alaska website that has to be accessed from your own device. But everything else was just great.

Delayed and cancelled flights were hard and very stressful, both ways!

The crew was quite good, they came by often with drinks or to collect trash. But what wasn't nice was the flight was over weigh and several people had to be rebooked. I was questioned whether I should have a seat when I was getting to it. The in-flight entertainment kept buffering and interrupting. And the route took the airplane through high winds which caused us a longer flight

Wasn’t on the flight due to Alaska cancellation…also after all the rerouting, I was going to be on a later flight that left SFO at 7:47pm, which meant an almost 6 hour layover. That same Hawaiian flight was delayed for another 2hours.

I had to cancel the flight because with a 3 hour delay for 'unexpected maintenance' in getting to LAX, I couldn't connect to an overseas flight that I had booked on Scandinavian Air.

The flight was CANCELED!!! Can’t get much more “poor” than that. I had to switch to American Airlines, add another layover and got home in Honolulu 4 hours later than I was supposed to be home. One bright spot was Josh with Alaska Airlines at SFO. He got me on a United Flight that got me home a few hours before I would have. Without him I would have gotten home almost 7 hours after my originally scheduled flight.

Canceled my flight within 24 hours, causing me arriving home midnight. Will never book Hawaiian airlines anymore

I like Hawaiian, it was great that they had good internet connection across the Pacific Ocean, thanks to Star Link satellites. The seating was comfortable, ( I was in economy ). Maybe I missed it, but I only got offered a beverage once. It was a nonstop flight KOA to SMF. I would take it again next time I go that way.

I always love flying Hawaii and I have nothing to add

Previously flown Hawaiian Airlines on similar routes, I found Alaska Airlines to be noticeably more comfortable. The seats on Alaska Airlines provided better support and cushioning, which made a significant difference on the long flight to the islands. When you’re spending 5-6 hours in the air, seat comfort really matters, and Alaska Airlines delivered where it counts. After comparing both carriers, I’ve decided to book with Alaska Airlines for all my future Hawaii trips. The superior seat comfort alone makes it worth choosing Alaska over Hawaiian Airlines. If you’re planning a trip to Hawaii and prioritizing comfort, I’d recommend giving Alaska Airlines a try. You won’t be disappointed. Highly recommended for Hawaii travel!

I received several emails about my 3:10 flight. When I showed up to the airport at 12:30 to check my bags I was told the flight was actually at 1 pm. They grudgingly rebooked me for a flight at 5:22 to Vegas to get a connecting to LAX. I did find the gate for my original 3:10 flight but they were booked. I proceeded to receive status updates and gate change information for the 3:10 flight, even though I was apparently never supposed to be on that flight

Everything you need to know for your flight from Helena to Seattle

Information on your arrival and departure airports