SEA - HLN

$139 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 9/19. 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 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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Flights 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

土, 8月 30 - 火, 9月 2
Hawaiian Airlines Logo
12:46 pm - 3:21 pmSEA-HLN
1h 35mnonstop
Hawaiian Airlines Logo
4:02 pm - 4:50 pmHLN-SEA
1h 48mnonstop
$208Hawaiian Airlines
Find Deal
金, 8月 22 - 木, 8月 28
Hawaiian Airlines Logo
12:46 pm - 3:21 pmSEA-HLN
1h 35mnonstop
Hawaiian Airlines Logo
4:02 pm - 4:50 pmHLN-SEA
1h 48mnonstop
$298Hawaiian Airlines
Find Deal
金, 8月 15 - 火, 8月 19
Alaska Airlines Logo
12:59 pm - 3:31 pmSEA-HLN
1h 32mnonstop
Alaska Airlines Logo
4:08 pm - 4:55 pmHLN-SEA
1h 47mnonstop
$328Alaska Airlines
Find Deal
土, 8月 30 - 火, 9月 2
Delta Logo
5:30 am - 12:20 pmSEA-HLN
5h 50m1 stop
Delta Logo
5:50 am - 7:00 pmHLN-SEA
14h 10m1 stop
$342Delta
Find Deal
土, 8月 30 - 火, 9月 2
Delta Logo
5:30 am - 12:20 pmSEA-HLN
5h 50m1 stop
Delta Logo
5:50 am - 6:35 amHLN-SEA
25h 45m2 stops
$367Delta
Find Deal
木, 8月 14 - 土, 8月 23
Alaska Airlines Logo
12:59 pm - 3:31 pmSEA-HLN
1h 32mnonstop
Alaska Airlines Logo
4:02 pm - 4:50 pmHLN-SEA
1h 48mnonstop
$368Alaska Airlines
Find Deal
金, 8月 22 - 木, 8月 28
Delta Logo
5:30 am - 12:20 pmSEA-HLN
5h 50m1 stop
Delta Logo
1:00 pm - 4:38 pmHLN-SEA
4h 38m1 stop
$378Delta
Find Deal
木, 8月 14 - 木, 8月 21
United Airlines Logo
5:00 am - 9:15 pmSEA-HLN
15h 15m1 stop
United Airlines Logo
5:20 pm - 10:59 pmHLN-SEA
6h 39m1 stop
$461United Airlines
Find Deal
金, 8月 22 - 木, 8月 28
United Airlines Logo
5:14 pm - 4:04 pmSEA-HLN
21h 50m3 stops
United Airlines Logo
5:20 pm - 10:59 pmHLN-SEA
6h 39m1 stop
$472United Airlines
Find Deal
土, 8月 30 - 日, 8月 31
 Logo
5:02 am - 1:30 pmSEA-HLN
7h 28m1 stop
 Logo
4:02 pm - 4:50 pmHLN-SEA
1h 48mnonstop
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 Fridays 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 February, where tickets cost $217 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $468 and $368 respectively.

Can I save money by flying with a layover from Seattle to Helena?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $371, prices are generally cheapest when you fly direct.

Good to know

Low seasonMay
Cheapest flight$139
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 3% lower on average.
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 $139 for a one-way ticket and $208 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, and SkyTeam are the airline alliances operating flights between Seattle and Helena, with SkyTeam being the most commonly used for this route.

  • 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 $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, 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

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

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 10000 reviews
7.1Food
7.8Comfort
8.1Boarding
7.1Entertainment
8.5Crew
Airline reviews

We flew to Seattle on 7/21, right after the company wide problems the day before. We were delayed 3 hours but understood. We were grateful it wasn’t canceled. As a larger, disabled person, my son booked us in 1st class, row 1. That was fine. My problem occurred while trying to use the restroom. I had to back in and barely had room to move. I started into a silent panic attack where my breathing was affected. I made it back to my seat, shaken. I understand space is limited but something needs to be done. This was on the trip out. The return trip had 4-5 disabled passengers. I watched them struggle. This plane’s restroom was a “little “ bigger. It was a little easier compared to the first plane. That’s my opinion! The crews were fantastic on both flights!

10.0 ExcellentAnonymous, Jul 2025SEA - PIT
Read more Alaska Airlines reviews

We flew to Seattle on 7/21, right after the company wide problems the day before. We were delayed 3 hours but understood. We were grateful it wasn’t canceled. As a larger, disabled person, my son booked us in 1st class, row 1. That was fine. My problem occurred while trying to use the restroom. I had to back in and barely had room to move. I started into a silent panic attack where my breathing was affected. I made it back to my seat, shaken. I understand space is limited but something needs to be done. This was on the trip out. The return trip had 4-5 disabled passengers. I watched them struggle. This plane’s restroom was a “little “ bigger. It was a little easier compared to the first plane. That’s my opinion! The crews were fantastic on both flights!

I was in the middle seat in the last row but that wasn’t their fault. It is why I rated the flight as mediocre, also the landing was a little rough. The good was really good. The self service luggage belt at SEATAC stopped working right when I reached it. I was literally placing my bag on the small belt when the main belt stopped. I understand that it wasn’t just Alaska but the entire side of the terminal. It took the agents about 20 minutes to arrive at a game plan and it certainly wasn’t flawless but they arranged for our luggage to be taken to the plane the old fashioned way by hand. Understandably, the plane was late in leaving. The flight took the proper amount of time and instead of arriving at OAK at 1:45, we got there at 2:30. I took my time getting to baggage claim because I knew it would be late if it was there at all. Sure enough it wasn’t but there was an agent there to greet me and inform me about my luggage. Long story longer, they delivered my luggage to where I was staying which was an hour away from the airport. Alaska has instituted a delivery type tracking system through my email that kept me informed of where my luggage was the whole time. WELL DONE!!

Crew was very friendly. Our bags showed up at the carousel within 20 minutes of arrival.

Flight was delayed and hour due to tire issue. First flight of the day, this issue should have been discovered prior to boarding.

Both legs of the trip were delayed about an hour. Planes were new, liked the WiFi availability and entertainment available. Crew was very good. People were happy and helpful. Liked the pilots - they provided updates throughout the flights. Snacks were underwhelming. Drinks were good! Like the smaller sodas and they actually came through the cabin 2x which was great. In Seattle airport the construction caused much confusion for Alaska. Process of printing own tags, etc was chaotic for people who didn’t check in online prior to arrival which in turn caused issues for those who did. Plus airport gates were too small for the number of people flying.

We did have to wait an hour for the runway to be cleared but other than that it was fine.

My seat row didn’t have tray tables which made it pretty difficult to get comfortable on a four hour flight. Good experience outside of that, though.

There was no sitting place in Sea-Tac airport. Even airline didn’t provide any food or dinner. I will never take this airline in my future travel.

Crew was very rude and uncaring. When someone tried to place their bag in overhead bin and they asked for help, crew told them they could not assist. Crew member then told the customer if they couldn’t place into overhead bin on their own, they should have checked in bag. When other customer helped to place the bag in the overhead bin, they were given evil look by crew member and told to hurry back to their uncomfortable middle seat. This was despite the fact that the plane did not leave until 30 minutes later. The flight was ~80% full; when final people boarded, they were forced into middle seats with no room for comfort. There were a handful of emergency row seats unoccupied. When asked if any of the emergency row seats may be used, the crew said that they would cost extra. Normally if a flight is completely boarded and there are open seats, the crew at least gives thought to asking someone if they want to re-locate to the more comfortable seat, especially on a long flight.

I am always uncomfortable about the boarding process. I think every airlines has their own procedures for boarding but all of their procedures are inconvenient because it takes too much time to board. If you board people from back seat to front, I think you can reduce the time to boarding.

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

Information on your arrival and departure airports

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