$166 Find Cheap Flights from Seattle to Kaua'i - 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 Seattle to Kaua'i departing on 8/24. 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

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Book Cheap Seattle to Kaua'i Plane Tickets

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

Sun, Nov 8 - Fri, Nov 13
United Airlines Logo
12:28 pm - 10:30 pm
SEA
-
LIH
12h 02m
2 stops
United Airlines Logo
1:46 pm - 12:59 am
LIH
-
SEA
9h 13m
1 stop
$402United Airlines
Sun, Nov 1 - Thu, Nov 5
United Airlines Logo
12:28 pm - 10:30 pm
SEA
-
LIH
12h 02m
2 stops
United Airlines Logo
1:46 pm - 12:59 am
LIH
-
SEA
9h 13m
1 stop
$402United Airlines
Thu, Nov 12 - Mon, Nov 16
Southwest Logo
7:30 am - 4:15 pm
SEA
-
LIH
10h 45m
1 stop
Southwest Logo
6:15 am - 9:10 pm
LIH
-
SEA
12h 55m
2 stops
$402Southwest
Tue, Nov 3 - Mon, Nov 9
Southwest Logo
11:05 am - 9:30 pm
SEA
-
LIH
12h 25m
2 stops
Southwest Logo
9:05 pm - 1:00 pm
LIH
-
SEA
13h 55m
1 stop
$402Southwest
Wed, Sep 9 - Mon, Sep 14
Multiple Airlines Logo
4:59 pm - 8:14 pm
SEA
-
LIH
6h 15mnonstop
Multiple Airlines Logo
7:12 am - 8:13 am
LIH
-
SEA
22h 01m
1 stop
$402Multiple Airlines
Wed, Nov 4 - Mon, Nov 16
Multiple Airlines Logo
4:15 pm - 6:41 am
SEA
-
LIH
16h 26m
1 stop
Multiple Airlines Logo
11:24 pm - 7:15 am
LIH
-
SEA
5h 51mnonstop
$402Multiple Airlines
Sun, Nov 8 - Wed, Nov 18
Alaska Airlines Logo
5:57 pm - 10:19 pm
SEA
-
LIH
6h 22mnonstop
Alaska Airlines Logo
11:24 pm - 7:15 am
LIH
-
SEA
5h 51mnonstop
$406Alaska Airlines
Sun, Sep 6 - Mon, Sep 14
Alaska Airlines Logo
4:08 pm - 7:23 pm
SEA
-
LIH
6h 15mnonstop
Alaska Airlines Logo
12:47 pm - 9:36 pm
LIH
-
SEA
5h 49mnonstop
$407Alaska Airlines
Sun, Nov 8 - Wed, Nov 18
Delta Logo
4:00 pm - 8:14 pm
SEA
-
LIH
6h 14mnonstop
Delta Logo
9:40 pm - 5:27 am
LIH
-
SEA
5h 47mnonstop
$407Delta
Thu, Aug 27 - Sat, Aug 29
Delta Logo
4:05 pm - 7:16 pm
SEA
-
LIH
6h 11mnonstop
Delta Logo
9:55 pm - 6:40 am
LIH
-
SEA
5h 45mnonstop
$407Delta
Booking Insights

KAYAK's insights & trends for Seattle to Kaua'i flights

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

What is the cheapest Seattle to Kaua'i flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Kaua'i from Seattle found in the last 5 days was to Lihue, at $356 round-trip. The most popular route is from Seattle (SEA) to Lihue (LIH), and the cheapest round-trip airline ticket found on this route in the last 5 days was $356.

What is the cheapest time of day to fly to Kaua'i?

The average price for all round-trip flights from Seattle to Kaua'i depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Kaua'i is generally in the afternoon, when round-trip flights cost $509 on average. Morning departures are around 24% more expensive than evening flights, on average. The most expensive time of day to fly to Kaua'i is generally in the morning, which is peak travel time and where the average cost of a ticket is $684.

Can I save money by flying with a layover from Seattle to Kaua'i?

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 $525, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Seattle to Kaua'i?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Kaua'i, 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 Kaua'i is January, when tickets cost $401 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $714 and $708 respectively.

What’s the cheapest day of the week to fly from Seattle to Kaua'i?

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

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

How far in advance should I book a flight from Seattle to Kaua'i?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Kaua'i, 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 Seattle to Kaua'i, you should book around 2 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low season

July

Cheapest flight

$166
Best time to beat the crowds but there is an average 23% increase in price.
Most popular time to fly with an average 24% increase in price.
Flight from Seattle to Lihue

FAQs - booking Kaua'i flights

  • How does KAYAK find such low prices on flights from Seattle to Kaua'i?

    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 Kaua'i.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Kaua'i 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 Kaua'i?

    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 from Seattle to Kaua'i with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Kaua'i?

    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 from Seattle to Kaua'i up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Seattle to Kaua'i

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Kaua'i. 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 Kaua'i? 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
SouthwestOverall score based on 4227 reviews
7.0Food
8.6Crew
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

2.0 MediocreAnonymous, May 2026
SEA - SMF
Read more Southwest reviews

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

Great flight from Seattle to Phoenix and to Chicago-Midway from Phoenix

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

Much better than the.last. flight on SW on Thanksgiving day

Unfortunately it was not a good experience. There was a rude stewardess.

The people of SW Airlines really make it nice to fly.

More assistance and clarity for travelers with gate checking and lap children

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

The crew seem untrained and uncertain no one ever checked up on us in our first class cabin. I had to ask for water four times and the lady kept saying she was busy when they weren't really doing anything. Had to walk to the back of the plane to get water for myself. Crew seem new and unexperience. You can tell this by the fumbling they kept making trying to fight. (I miss Hawaiian air.)

Terrible. Would never fly again. Took them several hours to prepare the plane and and reached my destination 4 hours late.

Our boarding was delayed due to two flat tires, but I appreciate the focus on safety. I also appreciated the additional offerings for drinks which never happened before except on Hawaiian Airlines. The hospitality is fantastic! Glad I upgraded to premium seats for the extra leg room as I was getting frustrated when the person in front of me was very restless and kept shifting. Otherwise, it was a fantastic experience.

Only issue was the 2 hr delay after an 8 hr layover. Very long day.

This flight was how a flight should be. The flight from Hawaii to Seattle was terrible

Awful. We got the last seats and they don't recline. We've been on this horrible journey since 6am and won't get to our destination almost a full day later. Oh and no food, either. Never again.

We were amazed by the amazing food, comfort and service received in our coach seats. Pleasantly surprised we received breakfast and great beverages for no charge. Bag check fee was on $35. The crew was so kind and helpful. Highly recommend!

We purchased tickets and were last to board while standby passengers were boarding before us. The WiFi wasn't working and the same thing happened on our last Alaska flight. The snack provided was vegan I wasn't going to chance eating that on a 6 hour flight incase it didn't agree with me.

The ground crew stocking the plane should have put some water on the plane at the very least. The cabin crew made no attempt to remediate the freezing interior for 5 hours. They had the temerity to tell passengers that they( the crew) liked the coldness of the 5 hour flight.

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

The cabin temperature was nice and cool. The wifi was not working.

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

First flight out and was 85 minutes delayed. Notification came out way too late

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

The crew at Hawaiian Airlines was fantastic. Kind and hard working. The pilots were great with giving us all the updates to make sure we were informed.

Flight scheduled to take off at 5.55pm but it did not take off until 7pm due to some food delivery delay.

The crew was quite good, they came by often with drinks or to collect trash. But what wasn't nice was the flight was over weigh and several people had to be rebooked. I was questioned whether I should have a seat when I was getting to it. The in-flight entertainment kept buffering and interrupting. And the route took the airplane through high winds which caused us a longer flight

Wasn’t on the flight due to Alaska cancellation…also after all the rerouting, I was going to be on a later flight that left SFO at 7:47pm, which meant an almost 6 hour layover. That same Hawaiian flight was delayed for another 2hours.

Flight was smooth and comfortable. We were able to check a bag at counter due to full flight and boarded with an earlier group. We were there very early and didn’t hear the gate change just noticed our flight was no longer displayed st the gate. There were two other flights with gate shuffles - may be unavoidable but not desirable. First time I had to print my own luggage tag and attach at arrival. Not a fan of that process.

Cons: Rode a newer Airbus - had the same rattle in the panels above my seat (plastics not secure b/t lighting and panels) as the last Airbus I rode. Cabin was quite warm, borderline hot. Asked to pay for headphones. And the reason I am writing this - when we arrived it took over 20 minutes to get our door open due to nobody on the ground ready for arrival. Likes: Staff was friendly, helpful, and professional. Sandwich was quite good.

We boarded an hour and a half late because a coffee maker leaked in the plane. Then we had to wait for awhile to get off the plane because another plane was in our spot at the terminal. I had plans when I landed that I had to skip so it was pretty disappointing.

Flight crew was great! It’s very special having native Hawaiians as flight attendants. I only fly Hawaiian Airlines when going to the Aloha states. Flight crew with other airlines don’t come close to your employees. Having a breakfast sandwich included on the flight was a treat and delicious. I pack a carry on only because of the extra baggage fee. I wish I didn’t have to haul even that around. I’d check baggage ( eliminate carry on completely)if it was lowered from $30 to $20. $10 is $10, and the extra fee (all airlines have) defeats the joy of finding a good round trip rate, Keep up the good work in knowing the personal qualities and people skills you want for personel you hire.

The check in went smoothly as did the boarding. The seats could be more comfortable for long distance flights. The seating space was better than some flights.

Hello, Bag drop off was cumbersome taking quite long. This should be a much faster process IMO. In flight, there was some disconnect with understanding the beverage cart schedule. we had no return service past the mid point. my seat mate asked for a coffee, was told they would come back later with the coffee, but never returned. The "items for sale" cart was not explained clearly and we missed out on taking part of that service. also the flight attendant moved through quite quickly giving us no time to react. I was happy with the selection of beverages etc. but not knowing or having clear understanding of what and when was troubling.

Flight be on time would be a good start. Then train your flight attendants to be attentive and friendly. This time they completely forgot my row for the measly snack! United, do better!

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Delayed by 2.5hrs any longer and they would’ve had to honour their own policy for breaking their own rules and regs. Not cool, especially when I have an infant child that needs to stay on a routine and they get schedules.

They had three choices for snacks - but you could only have one - and they ran out of the dark chocolate before they made it all the way down the aisle... Packed flight - limited service.

They opened my checked bag and even though my lock was tsa approved, they loose my lock and left my bag just like that. Incompetent people, very upset about it. I’ll try to avoid traveling with united

We fly to Ecuador frequently. Checking in is usually a hassle because most United agents take some time before they can verify that my passport doesn't require a visa to Ecuador. This time the process was even longer due to the cyber attack. But she was really nice to us. So glad we brought plenty of snacks to supplement the 3 flights from SEA to GYE.

We had selected seats in the app that were a 2x2 format in the middle of the plane. Our seats when we got on the plane had been moved to the back rows in a 3x1 format. What’s the point of paying up for tickets that allow seat selection if the airline will just change them?

The new Airbus A231neo has neat tech but the economy seats are so tight together that I always had my shoulders against one passenger or the other. I was very miffed that Basic Economy REQUIRES check-in of bags other than your personal carry-on; if you want to offer low-cost airline prices and then add services for a fee, just let me carry on my duffel. Hell, I could have put my carry on IN the duffel and called it a day but the gate agent would not let me; I ended up paying $40 for the risk of losing my bag. Not the worst flight, but far from the best.

Everything you need to know for your flight to Kaua'i

Information on your arrival and departure airports