SEA - HLN

$177 Find Cheap Flights from Seattle to Helena

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Helena departing on 5/26. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$177
Typical prices: $368-$243
Alaska Airlines
Tue 5/26Sat 5/30
SEA - HLN • Non-stop
Cheapest one-way
$209
Typical prices: $189-$349
Alaska Airlines
Thu 8/6
SEA - HLN • Non-stop
Top airlines
Cheapest • from $177 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Alaska Airlines. Average duration is 1h 36m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to travel
Cheapest • 100% price drop
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

Tue, May 26 - Sat, May 30
Alaska Airlines Logo
1:30 pm - 4:06 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:43 pm - 5:33 pm
HLN
-
SEA
1h 50mnonstop
$177Alaska Airlines
Tue, May 26 - Sat, May 30
Alaska Airlines Logo
1:30 pm - 4:06 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:43 pm - 5:33 pm
HLN
-
SEA
1h 50mnonstop
$187Alaska Airlines
Tue, May 26 - Sat, May 30
Alaska Airlines Logo
1:30 pm - 4:06 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:43 pm - 5:33 pm
HLN
-
SEA
1h 50mnonstop
$237Alaska Airlines
Fri, Aug 21 - Sun, Aug 23
Alaska Airlines Logo
2:19 pm - 4:55 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
5:32 pm - 6:28 pm
HLN
-
SEA
1h 56mnonstop
$297Alaska Airlines
Tue, Jul 21 - Tue, Jul 28
Alaska Airlines Logo
1:57 pm - 4:32 pm
SEA
-
HLN
1h 35mnonstop
Alaska Airlines Logo
5:09 pm - 6:01 pm
HLN
-
SEA
1h 52mnonstop
$312Alaska Airlines
Tue, Jul 21 - Mon, Jul 27
Alaska Airlines Logo
1:57 pm - 4:32 pm
SEA
-
HLN
1h 35mnonstop
Alaska Airlines Logo
5:09 pm - 6:01 pm
HLN
-
SEA
1h 52mnonstop
$327Alaska Airlines
Tue, May 19 - Sat, May 23
Alaska Airlines Logo
1:30 pm - 4:06 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:43 pm - 5:33 pm
HLN
-
SEA
1h 50mnonstop
$357Alaska Airlines
Sat, Jun 6 - Tue, Jun 9
Alaska Airlines Logo
1:30 pm - 4:06 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:43 pm - 5:33 pm
HLN
-
SEA
1h 50mnonstop
$392Alaska Airlines
Wed, May 27 - Sat, May 30
Delta Logo
5:30 am - 12:23 pm
SEA
-
HLN
5h 53m
1 stop
Delta Logo
1:03 pm - 4:44 pm
HLN
-
SEA
4h 41m
1 stop
$398Delta
Wed, May 20 - Sun, May 24
Delta Logo
5:30 am - 12:23 pm
SEA
-
HLN
5h 53m
1 stop
Delta Logo
5:45 am - 9:15 am
HLN
-
SEA
4h 30m
1 stop
$407Delta
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.

How much is a round-trip flight from Seattle to Helena?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Helena departing in May.

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 Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Seattle to Helena. For your return ticket, we recommend flying on a Wednesday 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 February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and August, where the average cost of round-trip tickets is $347 and $338 respectively.

Good to know

Cheapest flight$177
Most popular time to fly with an average 35% 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 $209 for a one-way ticket and $177 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 $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.
7.9
Alaska AirlinesOverall score based on 12332 reviews
7.1Food
8.5Crew
7.8Comfort
7.0Entertainment
8.1Boarding
Airline reviews

The crew was great and everything went smoothly coming and going.

10.0 ExcellentHayes, Apr 2026
SEA - IDA
Read more Alaska Airlines reviews

The crew was great and everything went smoothly coming and going.

My window seat did not have a window. I chose seat 11A thinking I would have a view. I had a wall instead.

See what I wrote in the previous section. This was a terrible experience. I would like refund.. I even paid an extra $70 for an aisle seat closer to the front to ensure that I got off early enough to catch the next flight. The fact that the plane did not wait, and even left eearlier, knowing that the first flight came in late, and was moved to a terminal three train stops away is appalling. My friend that flew JetBlue, their flight was delayed and came in later and the connecting flight WAITED for them. How is it that JetBlue could do that, and Alaska could not.

This was my second time flying Alaska Airline in the 1st Class cabin. Everything was fine with the exception of the food and entertainment. The food was just ok but not what I was expecting from 1st Class. A BBQ pork sandwich and baked potato. There wasnt any in-flight entertainment. I found that odd since it was a coast to coast flight Seattle to Dulles. My sister flew 1st Class on Delta on a shorter flight ( Seattle to Cincinnati) and had an awesome meal and in-flight entertainment. I typically fly Delta but there wasn’t a flight with times that fit my schedule. I am by no means a primary donna. But when my upgrade cost over $900…I didn’t use any reward miles…I was expecting more than what I got. I will never fly Alaska Airline 1st Class again. I will stick with Delta for all my travel needs whether it’s in 1st Class or coach.

Good staff. Comfortable seats. Had to check my bag because the flight was too full.

Loved this first class flight! Awesome food, snacks and drinks. Comfortable seat with foot rest. Good movie. Very friendly crew! Only thing I would suggest is having a screen on seat back in front of me so I didn’t have to watch the movie on my phone.

The crew was very attentive, boarding was orderly. I really liked the way Alaska Airlines gives boarding passes and dropping off my bags. Very smooth.

Once we were in the air, the flight was nice and smooth. The flight was about twenty minutes late to begin with, though, and then we needed to wait to land for another plane to land first.

Flight crew great! No WiFi not great. Someone took my bag not great!

Alaska Airlines staff go out of their way to accommodate my fragile musical instrument, every time. They are unlike any other airline. I've experienced this can-do attitude on several flights with different staff, so this must be the culture of their company. I appreciate Alaska!

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

Information on your arrival and departure airports