SEA - HLN

$104 Find Cheap Flights from Seattle 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 Seattle to Helena departing on 2/3. 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 Seattle 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 Seattle to Helena, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$157
Overall average: $176
Alaska Airlines
Wed 1/21Sat 1/24
SEA - HLN • Non-stop
Cheapest one-way
$104
Overall average: $149
Delta
Tue 2/3
SEA - HLN • 1 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 • 35% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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 Seattle to Helena (SEA-HLN)

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

Wed, Jan 21 - Sat, Jan 24
Alaska Airlines Logo
3:31 pm - 6:11 pm
SEA
-
HLN
1h 40mnonstop
Alaska Airlines Logo
6:48 pm - 7:47 pm
HLN
-
SEA
1h 59mnonstop
$157Alaska Airlines
Thu, Jan 15 - Thu, Jan 22
Hawaiian Airlines Logo
3:31 pm - 6:11 pm
SEA
-
HLN
1h 40mnonstop
Hawaiian Airlines Logo
6:48 pm - 7:47 pm
HLN
-
SEA
1h 59mnonstop
$182Hawaiian Airlines
Fri, Jan 23 - Sun, Jan 25
Delta Logo
5:00 am - 12:27 pm
SEA
-
HLN
6h 27m1 stop
Delta Logo
5:30 am - 9:17 am
HLN
-
SEA
4h 47m1 stop
$187Delta
Fri, Jan 23 - Sun, Jan 25
Delta Logo
4:55 pm - 10:29 pm
SEA
-
HLN
4h 34m1 stop
Delta Logo
5:30 am - 9:17 am
HLN
-
SEA
4h 47m1 stop
$207Delta
Sat, Jan 17 - Sun, Jan 18
Delta Logo
5:25 am - 12:27 pm
SEA
-
HLN
6h 02m1 stop
Delta Logo
5:30 am - 9:25 am
HLN
-
SEA
4h 55m1 stop
$268Delta
Wed, Jan 21 - Sat, Jan 24
United Airlines Logo
5:00 am - 1:41 pm
SEA
-
HLN
7h 41m1 stop
United Airlines Logo
6:15 am - 1:58 pm
HLN
-
SEA
8h 43m1 stop
$277United Airlines
Sat, Jan 3 - Wed, Jan 7
Alaska Airlines Logo
3:17 pm - 5:55 pm
SEA
-
HLN
1h 38mnonstop
Alaska Airlines Logo
6:48 pm - 7:47 pm
HLN
-
SEA
1h 59mnonstop
$288Alaska Airlines
Sun, Mar 29 - Wed, Apr 1
Alaska Airlines Logo
1:05 pm - 3:38 pm
SEA
-
HLN
1h 33mnonstop
Alaska Airlines Logo
4:10 pm - 4:51 pm
HLN
-
SEA
1h 41mnonstop
$298Alaska Airlines
Tue, Jan 13 - Tue, Jan 20
Alaska Airlines Logo
3:31 pm - 6:11 pm
SEA
-
HLN
1h 40mnonstop
Alaska Airlines Logo
6:48 pm - 7:47 pm
HLN
-
SEA
1h 59mnonstop
$307Alaska Airlines
Fri, Jan 23 - Sun, Jan 25
Alaska Airlines Logo
3:31 pm - 6:11 pm
SEA
-
HLN
1h 40mnonstop
Alaska Airlines Logo
6:48 pm - 7:47 pm
HLN
-
SEA
1h 59mnonstop
$327Alaska Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Helena flights

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

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

If your flying dates are flexible, you should consider flying to Helena on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Seattle to Helena. For your return ticket, we recommend flying on a Thursday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Helena, 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 Seattle to Helena is January, where tickets cost $176 (return) on average. On the other hand, the most expensive months are March and September, where the average cost of round-trip tickets is $385 and $347 respectively.

Good to know

Low seasonJune
Cheapest flight$104
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from Seattle to Helena

When to book flights from Seattle to Helena

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

  • What is the cheapest flight from Seattle to Helena?

    In the last 3 days, the lowest price for a flight from Seattle to Helena was $104 for a one-way ticket and $157 for a round-trip.

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

    No

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

    Only Alaska Airlines offers inflight Wi-Fi service on the Seattle to Helena flight route.

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

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

  • Which airline alliances offer flights from Seattle to Helena?

    oneworld is the only airline alliance operating flights between Seattle and Helena.

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

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

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helena from Seattle 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 Seattle 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 Seattle with another airline. Booking your flights between Seattle and HLN 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 Seattle 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 Seattle 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 Seattle to Helena

  • Looking for a cheap flight? 25% of our users found flights on this route for $284 or less one-way and $197 or less round-trip.

Prefer to fly direct from Seattle to Helena?

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

Direct departures

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

Direct returns

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

Reviews of the top airline flying from Seattle to Helena

 
See real verified KAYAK customer reviews for airlines flying from Seattle 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 Seattle 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
Alaska AirlinesOverall score based on 11477 reviews
8.5Crew
8.1Boarding
7.8Comfort
7.0Entertainment
7.1Food
Airline reviews

The plane was delayed which was annoying. No seat back screens is a bummer. Staff if great

8.0 ExcellentAnonymous, Dec 2025
SEA - SFO
Read more Alaska Airlines reviews

The plane was delayed which was annoying. No seat back screens is a bummer. Staff if great

I got my seat changed last minute so a parent coumd sit with their child wich i found out was a teenager

I wish you would have just canceled the Saturday flight from sea to rdd on Dec 13. the diversion cost me more time and money than if I had just rebooked to Sacramento. It was a huge headache and cost.

There was no food or entertainment so quit asking about that! Everything else was fine.

I wasn’t assigned a seat until last minute even though I checked in 24 hours before the flight and was told I might not be able to get on the flight! The leg room and seat room in the flight was abysmal. The service both at boarding and on the flight was very mediocre and not particularly friendly.

Late boarding, older plane. Great flight, no issues. Very cold inside the plane.

The plane was old so the seats were very worn out. The seats were hard, uncomfortable, and caused me actual pain. The lights were too bright. The flight itself was fine.

1. Denial of Basic Needs (SEA): Upon arrival in Seattle, the wheelchair attendant refused my urgent request to use the restroom, insisting on scanning documents first. She eventually took me to a restroom but then abandoned me and my autistic son at an unstaffed, deserted gate for over four hours. When I called the accommodation line for help, I was told to "get someone's attention," which was impossible. My son, traumatized by the prospect of me yelling for help, was forced to wander the terminal to find assistance. 2. Revocation of Accommodations & Threats: At the gate, an agent stated I had no accommodations on file, despite my previous leg having them. When I showed the app (where my bulkhead seat was erased and replaced with Row 14), he denied the evidence. When I attempted to advocate for my immobilized leg, he threatened to "yank me from the flight" if I said one more word. He coerced me into agreeing that I was "asking for accommodations for the first time" before he would allow assistance, effectively forcing me to falsify the situation under duress. I complied only out of fear of being stranded in a strange city. 3. On-Board Negligence and Injury: Because my bulkhead seat was revoked, I was forced into Row 14. With my leg immobilized and unable to bend, it extended into the aisle. During boarding and the flight: 16 different passengers tripped over my injured leg. 6 rolled luggage bags were pulled over my injured leg. The Flight Attendant (FA) was one of the people who tripped and drove luggage over me. I reported the issue to the FA after 10 trips and 3 luggage impacts. He ignored me. He only addressed me later to ask me to move my immobilized leg for beverage service. I informed him again: "16 people have tripped, 6 luggage runovers, I cannot bend it." He provided no medical aid and no incident report. 4. Resolution and Trauma: Eventually, a different employee noticed my distress and my original paper boarding pass showing the correct bulkhead assignment. He asked me to move up. I broke down in tears, terrified that moving would cause the gate agent to remove me from the plane as threatened. We were eventually moved to the bulkhead, but the damage was done. My autistic son was traumatized by watching his mother be trampled and threatened. 5. Post-Flight: I called to report these injuries, but was disconnected after a 45-minute hold. I require a formal record of this injury and these violations.

Larger seats with a bit more room would be good! Thanks for all your hard work. I think we are all feeling a bit down these days economically and your positive attitudes, both from SJC to Seattle and from Seattle to Bozeman makes more of a difference than you can see! Thank you and Merry Christmas! I hope all your financial needs are met and that very good things come your way.

We flew economy, it was what I expected. The seats are too upright for me

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

Information on your arrival and departure airports