KOA - SEA

$158 Find Cheap Flights from Kailua-Kona to Seattle - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kailua-Kona to Seattle departing on 9/1. 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

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Everything you should know

Cheapest round-trip
$346
Typical prices: $412-$617
United Airlines
Mon 8/24Sat 8/29
KOA - SEA • 1 stop
Cheapest non-stop
$437
Typical prices: $397-$597
Alaska Airlines
Thu 8/27Tue 9/8
KOA - SEA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
Delta offers free Wi-Fi for SkyMiles members on domestic Kona-Seattle flights.
At KOA, USDA checks ban most Hawaii produce in carry-on and checked bags.
Expert advice
Expert advice
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Top airlines
Cheapest • from $346 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Alaska Airlines and Delta. Average duration is 5h 52m
Direct flights
Direct flights
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Direct flights
Direct flights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
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Flight Deals

Cheap Flights from Kailua-Kona to Seattle (KOA-SEA)

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

Mon, Aug 24 - Sat, Aug 29
United Airlines Logo
10:50 pm - 11:26 am
KOA
-
SEA
9h 36m
1 stop
United Airlines Logo
7:00 am - 12:48 pm
SEA
-
KOA
8h 48m
1 stop
$346United Airlines
Thu, Aug 20 - Mon, Aug 24
United Airlines Logo
10:50 pm - 9:59 am
KOA
-
SEA
8h 09m
1 stop
United Airlines Logo
1:22 pm - 7:35 pm
SEA
-
KOA
9h 13m
1 stop
$348United Airlines
Mon, Aug 24 - Sat, Aug 29
United Airlines Logo
10:50 pm - 3:39 pm
KOA
-
SEA
13h 49m
2 stops
United Airlines Logo
12:15 pm - 8:05 pm
SEA
-
KOA
10h 50m
1 stop
$352United Airlines
Thu, Aug 20 - Mon, Aug 24
United Airlines Logo
10:50 pm - 9:59 am
KOA
-
SEA
8h 09m
1 stop
United Airlines Logo
7:11 am - 12:48 pm
SEA
-
KOA
8h 37m
1 stop
$353United Airlines
Sun, Oct 25 - Sat, Oct 31
United Airlines Logo
10:59 pm - 12:20 pm
KOA
-
SEA
10h 21m
1 stop
United Airlines Logo
10:45 am - 7:32 pm
SEA
-
KOA
11h 47m
1 stop
$376United Airlines
Thu, Aug 20 - Wed, Aug 26
Southwest Logo
10:00 am - 8:50 pm
KOA
-
SEA
7h 50m
1 stop
Southwest Logo
5:55 am - 12:25 pm
SEA
-
KOA
9h 30m
1 stop
$396Southwest
Thu, Aug 20 - Wed, Aug 26
Southwest Logo
10:00 am - 8:50 pm
KOA
-
SEA
7h 50m
1 stop
Southwest Logo
7:40 am - 6:05 pm
SEA
-
KOA
13h 25m
2 stops
$402Southwest
Thu, Aug 20 - Wed, Aug 26
Southwest Logo
10:00 am - 12:20 am
KOA
-
SEA
11h 20m
2 stops
Southwest Logo
7:40 am - 6:05 pm
SEA
-
KOA
13h 25m
2 stops
$407Southwest
Mon, Aug 17 - Mon, Aug 24
United Airlines Logo
10:50 pm - 11:26 am
KOA
-
SEA
9h 36m
1 stop
United Airlines Logo
7:11 am - 12:48 pm
SEA
-
KOA
8h 37m
1 stop
$414United Airlines
Thu, Aug 20 - Wed, Aug 26
Multiple Airlines Logo
10:25 pm - 7:20 am
KOA
-
SEA
5h 55mnonstop
Multiple Airlines Logo
8:38 am - 2:39 pm
SEA
-
KOA
9h 01m
1 stop
$425Multiple Airlines
Booking Insights

KAYAK's insights & trends for Kailua-Kona to Seattle flights

Get data-powered insights and trends into flights from Kailua-Kona to Seattle to help you find the cheapest flights, the best time to fly and much more.

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

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

What’s the cheapest day of the week to fly from Kailua-Kona to Seattle?

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

When flying from Kailua-Kona to Seattle, you should consider leaving on a Sunday and avoid Mondays if you are looking for the best rates. For your return to Kailua-Kona, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Kailua-Kona to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Kailua-Kona 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 Kailua-Kona to Seattle is September, where tickets cost $387 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $638 and $618 respectively.

How far in advance should I book a flight from Kailua-Kona to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Kailua-Kona to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Kailua-Kona to Seattle, you should book around 3 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

Expert advice for your flight from Kailua-Kona to Seattle

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on KOA

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know

Low seasonFebruary
Cheapest flight$158
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Kailua-Kona to Seattle

When to book flights from Kailua-Kona to Seattle

Are your dates flexible? Find out the best times to travel from Kailua-Kona 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.

Flights from Kailua-Kona to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Kailua-Kona to Seattle 
Verified travelerFlew with Alaska Airlines
KOA
-
SEA
Dec 2025
Eat your fruits and veggies before you attempt to board. The USDA doesn't allow out of Hawaii.
Verified travelerFlew with Alaska Airlines
KOA
-
SEA
May 2024
Bring a blanket if you plan to sleep

FAQs for booking flights from Kailua-Kona to Seattle

  • What are some common connection cities on a flight from Kailua-Kona to Seattle?

    One-stop flights from KOA to SEA aboard United tend to stop in San Francisco (SFO) or Los Angeles (LAX). Delta also tends to stop at LAX, as does American. Other American one-stop flights tend to stop in Phoenix (PHX). Hawaiian Airlines flights tend to stop in Honolulu and Alaska Airlines flights in San Jose, California (SJC).

  • What's a good airline to use if I want to send an unaccompanied minor from Kailua-Kona to Seattle?

    Consider purchasing a non-stop ticket aboard Alaska Airlines. Your Unaccompanied Minor will fly as a member of their Junior Jetsetters program and get a lanyard and wristband, early boarding, a complimentary meal, and constant supervision from drop-off to pick-up. The service is available for kids 5 to 17.

  • Does either the Kailua-Kona or Seattle airport have accommodations for travelers with emotional or cognitive challenges?

    The Seattle-Tacoma International Airport (SEA) recognizes and uses the Sunflower Lanyard Hidden Disabilities Program. Travelers with challenges such as autism or PTSD can sign up to where a sunflower lanyard that discreetly alerts airport and airline staff that they will need extra time and assistance negotiating the arrivals process.

  • Which airline flying from Kailua-Kona to Seattle is the best for bringing luggage?

    Hawaiian Airlines offers some of the cheapest tickets available from KOA to SEA. They allow one carry-on and their checked-bag fees tend to be lower than those of the other airlines. The carry-on must be within 9 x 14 x 22 inches and weigh no more than 25 lb. A checked bag must have dimensions totaling no more than 61 inches and weigh no more than 50 lb.

  • What is the cheapest flight from Kailua-Kona to Seattle?

    In the last 5 days, the lowest price for a flight from Kailua-Kona to Seattle was $158 for a one-way ticket and $346 for a round-trip.

  • Do I need a passport to fly between Kailua-Kona and Seattle?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Kailua-Kona to Seattle?

    Kailua-Kona and Seattle are both served by 1 main airport. You will leave Kailua-Kona from Kona Intl and will be arriving at Seattle/Tacoma Intl.

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

    Delta, Hawaiian Airlines, JetBlue, Alaska Airlines, and American Airlines offer inflight Wi-Fi service on the Kailua-Kona to Seattle flight route.

  • Which aircraft models fly most regularly from Kailua-Kona to Seattle?

    The Airbus A321neo is the aircraft model that flies most regularly on the Kailua-Kona to Seattle flight route.

  • Which airline alliances offer flights from Kailua-Kona to Seattle?

    SkyTeam, and oneworld are the airline alliances operating flights between Kailua-Kona and Seattle, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Kailua-Kona to Seattle?

    There are nonstop flights from Kailua-Kona to Seattle on a daily basis.

  • Which is the best airline for flights from Kailua-Kona to Seattle, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Kailua-Kona to Seattle are Alaska Airlines and Delta. With an average price for the route of $529 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $486 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Kailua-Kona 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 Kailua-Kona to Seattle.

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

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $300 or less one-way and $466 or less round-trip.
  • Kona International Airport (KOA), serving the island of Hawaii, is a hub for Mokulele Airlines, Go! Mokulele, and Big Island Air. The Seattle-Tacoma International Airport (SEA) is a hub for Alaska Airlines and Delta. Some of the cheapest flights from KOA to SEA are aboard Alaska Airlines.
  • Although there are no airline lounges that economy ticket holders can access at KOA, waiting in the airport itself is an interesting treat. The Kona International Airport is unique in that both of its small terminals are open-air, allowing you to enjoy the natural splendor of Hawaii virtually up until the moment you board your plane to Seattle.
  • Won't you land at the Seattle-Tacoma International Airport (SEA), you can get into downtown Seattle by taking the Link Light Rail. From baggage claim, go up to the fourth floor, across the Sky Bridge, and into the parking garage in order to catch the train. You can also take a Sound Transit bus into downtown, which you can catch in the lower drive of the main terminal.
  • If you want to park your car at KOA before your flight to SEA, the parking lot costs under $20 a day. This lot also has designated stalls for electric vehicles and accessible parking spaces. The main parking lot is located just across the street from the terminal.
  • If you are looking for a flight from Kailua-Kona to Seattle that leaves a small carbon footprint, consider a non-stop flight aboard Delta. This economy flight emits approximately 42% less CO2 into the atmosphere than average flights that run the same route. Non-stop flights aboard Alaska emit about 41% less carbon dioxide.

Prefer to fly direct from Kailua-Kona to Seattle?

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

Direct departures

Kona Intl to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more direct flights

Direct returns

Seattle/Tacoma Intl to Kona Intl

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more direct flights

Reviews of the top 3 airlines serving from Kailua-Kona to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Kailua-Kona 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 Kailua-Kona 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.
7.9
Alaska AirlinesOverall score based on 12636 reviews
8.5Crew
8.1Boarding
7.8Comfort
7.1Food
7.0Entertainment
Airline reviews

Flight attendants were kind. Until the plane arrived and had a slow taxi. I was on the tail end of the plane and informed the attendants I had a connecting flight. They didn't do anything to help me get off in a more timely manner. Nor did they contact my connecting flight to let them know I was on my way. By the time it was our rows turn my connecting flight across the terminal D gate to C gate was already boarding. I had to run the whole way through the terminal and hope I caught a train inntime. They were calling my name last call by the time arrived at the gate. Then my connecting flight ticket would not work and a new ticket had to be issued requiring presenting my ID again

6.0 GoodJaime, Jul 2026
KOA - SEA
Read more Alaska Airlines reviews

Flight attendants were kind. Until the plane arrived and had a slow taxi. I was on the tail end of the plane and informed the attendants I had a connecting flight. They didn't do anything to help me get off in a more timely manner. Nor did they contact my connecting flight to let them know I was on my way. By the time it was our rows turn my connecting flight across the terminal D gate to C gate was already boarding. I had to run the whole way through the terminal and hope I caught a train inntime. They were calling my name last call by the time arrived at the gate. Then my connecting flight ticket would not work and a new ticket had to be issued requiring presenting my ID again

Flew first class. No headrest screens on either flight and the one flight had no foot rests either.

Alaska Airlines has horrible customer service. After sitting in a packed airplane for over an hour, they decided to cancel our flight and had us deplane. Instead of helping us nearby, we had to ride two trains (in Seattle Airport), from the S-Gates to the C-Gates; only to stand in a line for 3 and a half hours. Throughout the 3 hours, there was often 1 agent at the customer service counter to help the passengers trying to get information and accommodation on a flight that they cancelled. Do better!

The stewards were too loud and chatty with each other

This was a smooth ride all the way with plenty of space in main cabin for my 6 foot frame over 5.5 hours. The stewards were pleasant and attentive. We bought the tapas box which proved to adequate for us on this flight. It was pretty hard to find restaurant food to go that is vegan for us in Kona Airport so buying this helped lots.

While it was delayed, once we were in the air, it was smooth. The flight attendents and pilot were friendly and did their best to accommodate us.

As expected cyst service up front was very good we needed assistance at the gates and they were very accommodating

No screens to watch flight or movies etc. Had to use your own device, all I had was cell phone which is too small. Disappointing. Otherwise very nice.

Seat did not recline yet fare was the same as one that did !!!

Horrible! It was on a Max8 plane that they knew about 2weeks prior to departure and cancelled our flight 12hrs before checkin. That is unexcusable!

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

The counter service folks didn’t show up until two hours prior to the flight. The check in machines didn’t work, ALL CLOSED. Slow service, few directions. The plane was clean, but the restrooms need work from a space standpoint. I am 5’8” and I had to bend down. Very cramped and I am a thin person. Too bad it’s “profit over people” corporate mentality…

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

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

Our flight was delayed, which I know things can happen. The bathrooms were dirty and a mess. It took over an hour to get our bags after the plane landed. Every flight was on the same 2 baggage claims. You would thing if we spent over 5 hours on a flight we would get more then a tiny bag of pretzels. The movie and tv choices were mid.

The flight was very smooth and the landing was AMAZING! I have flight anxiety and it didnt peak once! :) Thank you to the pilots and crew!!

Pillows and blankets were nice since it was an overnight flight, but the seats should be larger and there should be more space between rows so we have more leg room.

If I knew I would be on Alaska Airlines flying back, I never would have bought the ticket. My flight kept getting delayed and Alaska always seems to be late which is why I don’t fly on them.

When I scheduled using Kayak I couldn’t I couldn’t select my own seats and the seats I got were undesirable. I’ll choose to schedule with the carrier directly in the future if I choose Hawaii Air in the future. The Staff was excellent under the circumstances.

We enjoyed our first flight through Hawaiian Airlines. Very smooth landing. Mahalo

Extremely frustrated that I followed all directions and Hawaiian Airlines made me leave my surfboard at the airport and refused to let me check it.

- Zero leg room. - No way to enjoy the VERY limited entertainment due to the lack of headphones / outlets - No Wifi - No charging outlet - No complimentary light snacks like pretzels - No masks to handout when the flight is full of sick - people (me and my son got sick upon our return) smh

Everything you need to know for your flight from Kailua-Kona to Seattle

Information on your arrival and departure airports