SEA - HLN

$187 Find Cheap Flights from Seattle to Helena - Compare and Save

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 8/29. 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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Everything you should know

Cheapest round-trip
$187
Typical prices: $293-$198
Alaska Airlines
Sat 8/29Wed 11/4
SEA - HLN • Non-stop
Cheapest non-stop
$187
Typical prices: $277-$197
Alaska Airlines
Sat 8/29Sat 10/31
SEA - HLN • Non-stop
Top airlines
Alaska Airlines
Cheapest • from $187 (round-trip)
Alaska Airlines
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with Alaska Airlines. Average duration is 1h 35m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to travel
February
Cheapest • 100% price drop
August
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 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

Sat, Aug 29 - Wed, Nov 4
Alaska Airlines Logo
1:58 pm - 4:34 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:41 pm - 5:33 pm
HLN
-
SEA
1h 52mnonstop
$187Alaska Airlines
Mon, Aug 31 - Sat, Oct 31
Alaska Airlines Logo
1:58 pm - 4:34 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:48 pm - 5:41 pm
HLN
-
SEA
1h 53mnonstop
$197Alaska Airlines
Mon, Aug 31 - Thu, Nov 5
Alaska Airlines Logo
1:58 pm - 4:34 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:41 pm - 5:33 pm
HLN
-
SEA
1h 52mnonstop
$207Alaska Airlines
Wed, Nov 11 - Sat, Nov 14
Delta Logo
5:45 am - 12:24 pm
SEA
-
HLN
5h 39m
1 stop
Delta Logo
5:45 am - 12:24 pm
HLN
-
SEA
7h 39m
1 stop
$217Delta
Sun, Aug 30 - Tue, Nov 3
Alaska Airlines Logo
1:58 pm - 4:34 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:41 pm - 5:33 pm
HLN
-
SEA
1h 52mnonstop
$247Alaska Airlines
Fri, Sep 4 - Fri, Nov 6
Alaska Airlines Logo
1:58 pm - 4:34 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:41 pm - 5:33 pm
HLN
-
SEA
1h 52mnonstop
$257Alaska Airlines
Sat, Aug 29 - Tue, Nov 3
Delta Logo
5:30 am - 12:15 pm
SEA
-
HLN
5h 45m
1 stop
Delta Logo
5:45 am - 12:24 pm
HLN
-
SEA
7h 39m
1 stop
$277Delta
Sat, Aug 29 - Fri, Nov 6
Delta Logo
5:30 am - 12:15 pm
SEA
-
HLN
5h 45m
1 stop
Delta Logo
5:45 am - 9:33 am
HLN
-
SEA
4h 48m
1 stop
$287Delta
Sun, Aug 30 - Sun, Nov 1
Delta Logo
5:45 am - 12:15 pm
SEA
-
HLN
5h 30m
1 stop
Delta Logo
5:45 am - 9:33 am
HLN
-
SEA
4h 48m
1 stop
$297Delta
Fri, Oct 9 - Sun, Oct 11
Delta Logo
5:45 am - 12:24 pm
SEA
-
HLN
5h 39m
1 stop
Delta Logo
12:50 pm - 4:53 pm
HLN
-
SEA
5h 03m
1 stop
$303Delta
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 August.

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 June and September, where the average cost of round-trip tickets is $427 and $347 respectively.

Find deals

Good to know

Cheapest flight$187
Most popular time to fly with an average 30% 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 5 days, the lowest price for a flight from Seattle to Helena was $194 for a one-way ticket and $187 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.

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 12478 reviews
7.0Food
7.0Entertainment
8.1Boarding
8.5Crew
7.8Comfort
Airline reviews

A five hour nonstop flight traveling over a few time zones and over the dinner hour and you get a small bag of pretzels. And no screens to watch movies. I

4.0 OkayDean, Jun 2026
SEA - DCA
Read more Alaska Airlines reviews

A five hour nonstop flight traveling over a few time zones and over the dinner hour and you get a small bag of pretzels. And no screens to watch movies. I

The flight kept getting delayed due to a maintenance issue. That happens, but there is no excuse for changing the gate FIVE TIMES, including one time nearly all the way across SeaTac. After we were delayed for 3+ hours, they did send us (via email) a $12 meal voucher...except you can't find a $12 meal anywhere in that airport, unless you consider a bag of M&M's and a bottle of water a meal. The plane had one problem after another but finally took off 4.5 hours late. This caused us to miss our hotel shuttle at ORD (they didn't run past midnight and it was 3 am) so we had to wait 25 minutes and pay for an Uber. I did get a $50 flight voucher from Alaska...big deal. Barely covers my Uber ride that I shouldn't have needed.

I upgraded to a better seat and it was much more comfortable. Nobody serves food anymore and actually on a 2+ hr flight not necessary. I didn’t even get water.

Check in & bag drop was straightforward. Alaskair changed the gate approx 40 min before departure, and I only became aware due to Google wallet update to my boarding pass. Had to move from gate N1 to C9 which required use of the Train, luckily I had time available.

Super impressed by staff courtesy, and assistance, Flight was one of the best I've had despite turbulence... Will definitely be flying Alaskan air as my preferred choice

My boarding passes were pulled from my Apple wallet and my 3 family members who were all sitting together in the same row all got put middle seats and were one of the last to board and barely were able to get our bags in the luggage bins.

Was disappointed not to have known Alaska Air offers no music, no flight aware, no films.

I was surprised by everything. The cleanliness, the punctuality, the friendliness of the crew… and the Wi-Fi! Please keep up the good work.

The flight attendant and first class were very friendly, efficient, and wanted to make sure that service was great. Highly recommend this airline.

Thank you to everyone, the crew and pilots.. they were so amazing!!

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

Information on your arrival and departure airports

Seattle (SEA)
Helena (HLN)