HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kaua'i

$129+ Cheap flights from Seattle (SEA) to Kaua'i

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIH
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Kaua'i with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Seattle to Kaua'i

Cheapest flights from Seattle to Kaua'i
Explore the most affordable flight options available from Seattle to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/292:40 pmSEA - LIH
1 stop7h 50mAlaska Airlines
Sat 12/611:25 pmLIH - SEA
Nonstop5h 50mAlaska Airlines
Deal found 11/5$303
This Alaska Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/306:35 pmSEA - LIH
1 stop20h 56mAlaska Airlines
Sat 12/611:25 pmLIH - SEA
Nonstop5h 50mAlaska Airlines
Deal found 11/4$304
This Alaska Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:54 pmSEA - LIH
Nonstop6h 31mAlaska Airlines
Fri 12/512:49 pmLIH - SEA
1 stop18h 18mAlaska Airlines
Deal found 11/4$308
This Alaska Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/255:20 amSEA - LIH
1 stop9h 00mAlaska Airlines
Wed 12/39:00 pmLIH - SEA
1 stop8h 37mAlaska Airlines
Deal found 11/4$313
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/303:52 pmSEA - LIH
Nonstop6h 12mDelta
Sat 12/139:50 pmLIH - SEA
Nonstop5h 44mDelta
Deal found 11/4$318
This Delta deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:50 pmSEA - LIH
Nonstop6h 20mDelta
Sat 12/139:50 pmLIH - SEA
Nonstop5h 44mDelta
Deal found 11/6$326
This Hawaiian Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/292:40 pmSEA - LIH
1 stop9h 34mAlaska Airlines
Fri 12/59:00 pmLIH - SEA
1 stop8h 37mAlaska Airlines
Deal found 11/5$328
This Alaska Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/62:40 pmSEA - LIH
1 stop9h 43mAlaska Airlines
Sat 12/1311:25 pmLIH - SEA
Nonstop5h 50mAlaska Airlines
Deal found 11/5$333
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/16:35 pmSEA - LIH
1 stop22h 31mAlaska Airlines
Wed 12/107:59 pmLIH - SEA
1 stop7h 16mAlaska Airlines
Deal found 11/4$335
This Delta deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/410:25 amSEA - LIH
1 stop10h 08mDelta
Fri 12/129:50 pmLIH - SEA
Nonstop5h 44mDelta
Deal found 11/5$336
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/210:25 amSEA - LIH
1 stop10h 08mDelta
Thu 12/410:55 pmLIH - SEA
1 stop9h 50mDelta
Deal found 11/4$337
This Alaska Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:54 pmSEA - LIH
Nonstop6h 31mAlaska Airlines
Wed 12/311:25 pmLIH - SEA
Nonstop5h 50mAlaska Airlines
Deal found 11/5$338

Cheap flight deals from Seattle to Kaua'i

Keep the following information in mind while searching for Seattle to Kaua'i flight deals. Data was last updated November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$303
(Alaska Airlines)

One-way from

$129
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$510

Good round-trip deal

$353 or less

Good one-way deal

$241 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Lihue flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Lihue flights.
Search Deals
From Seattle/Tacoma Intl to Kaua'i
Search Deals
One-way flight from Seattle/Tacoma Intl to Kaua'i
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Kaua'i.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Kaua'i.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Kaua'i that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Seattle to Kaua'i that are best for you.

Fly from

Seattle

Fly to

Kaua'i

Route

Depart

Return

Price

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Tue 11/25

6:10 pm-10:32 pm

Nonstop6h 22m

Lihue

Wed 12/3

9:00 pm-7:37 am

1 stop8h 37m

$303

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Tue 12/2

5:54 pm-10:25 pm

Nonstop6h 31m

Lihue

Thu 12/4

7:59 pm-5:15 am

1 stop7h 16m

$303

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Wed 12/31

8:27 pm-10:39 am

1 stop16h 12m

Lihue

Sun 1/11

2:50 pm-5:19 am

1 stop12h 29m

$313

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Sun 11/30

5:20 am-12:20 pm

1 stop9h 00m

Lihue

Mon 12/8

5:00 pm-5:05 am

1 stop10h 05m

$313

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Mon 12/1

3:52 pm-8:04 pm

Nonstop6h 12m

Lihue

Fri 12/5

9:50 pm-5:34 am

Nonstop5h 44m

$318

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Thu 1/1

5:50 pm-6:18 am

1 stop14h 28m

Lihue

Sat 1/31

2:30 pm-10:01 am

1 stop17h 31m

$323

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Mon 12/15

3:50 pm-8:10 pm

Nonstop6h 20m

Lihue

Fri 12/26

9:20 pm-5:00 am

Nonstop5h 40m

$326

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Mon 12/1

3:52 pm-8:04 pm

Nonstop6h 12m

Lihue

Thu 12/4

10:55 pm-12:39 pm

1 stop11h 44m

$328

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Sat 11/29

6:10 pm-10:32 pm

Nonstop6h 22m

Lihue

Wed 12/3

11:25 pm-7:15 am

Nonstop5h 50m

$328

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Sat 11/29

2:40 pm-10:14 pm

1 stop9h 34m

Lihue

Fri 12/5

9:00 pm-7:37 am

1 stop8h 37m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 19 results
1
2

Best time to book a flight from Seattle to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Kaua'i

What is the cheapest month to book a flight from Seattle to Kaua'i?

Currently, January is the cheapest month in which you can book a flight from Seattle to Kaua'i (average of $218). Flying from Seattle to Kaua'i in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to FUS?

Find hourly flight availability from Seattle to Kaua'i. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

It’s optimal to fly from Seattle to Kaua'i in the evening. By choosing this option you can save up to 58% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Kaua'i. Price data was last updated on November 2, 2025.

Travelers seeking maximum savings on their Seattle to Kaua'i flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Kaua'i

Explore weekly flight availability from Seattle to Kaua'i. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 6, 2025.

The most flights from SEA to zzFUS are scheduled on a Wednesday (9 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

Reviews of airlines servicing Kaua'i

Get insights into the airlines that provide service to Kaua'i. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kaua'i. Reviews last updated November 6, 2025.
Read through reviews of airlines operating flights from Seattle to Kaua'i, such as Alaska Airlines, Southwest, and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,246 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,246 reviews
Alaska Airlines
8.0
Very good
11,246 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
11,246 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
8,001 reviews
Alaska Airlines
8.0
Very good
11,246 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,804 reviews
Alaska Airlines
8.0
Very good
11,246 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
11,040 reviews
Alaska Airlines
8.0
Very good
11,246 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Kaua'i. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Kaua'i?

    If you book a flight to Kaua'i from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle.

  • How popular is this Seattle to Kaua'i flight route?

    Flights from Seattle/Tacoma Intl to Kaua'i have been viewed 8 times in the past calendar month.

  • How long is the flight from Seattle to Kaua'i?

    Alaska Airlines and Delta can get you from Seattle to Kaua'i in just under 6h 12m. Your travel time will be generally consistent. Airlines will cover a distance of 2698 mi. All flights are typically nonstop.

  • What are the cheapest airlines to fly from Seattle to Kaua'i one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $129. Alaska Airlines flights start at $149 while deals on Delta start at $149 one-way.

  • What are the most reliable airlines from Seattle to Kaua'i?

    Before booking your flight to Kaua'i from Seattle, check out the most reliable airlines to get you to your destination on time: Scandinavian Airlines (92%), Air France (87%), Delta( 87%).

  • What are the cheapest flights from Seattle to Kaua'i?

    Looking at all options, your cheapest flight can be booked for $149. While the most popular route (Seattle/Tacoma Intl - Lihue) can be booked for $258 on average, our data indicates $864 when flying from Seattle to Kaua'i.

  • Can I find deals for flights from Seattle to Kaua'i that include hotel bookings?

    Yes. In addition to deals on Seattle to Kaua'i flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Kaua'i?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Kaua'i.

  • Can I find deals for business class flights from Seattle to Kaua'i?

    Yes. Cheapflights offers flight deals from Seattle to Kaua'i by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Kaua'i?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Kaua'i (average of $218). Flying from Seattle to Kaua'i in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Kaua'i

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Honolulu flights
Seattle to Kahului flights
Seattle to Kailua-Kona flights
Seattle to Lihue flights
Portland to Honolulu flights
Portland to Kahului flights
Portland to Kailua-Kona flights
Portland to Lihue flights
Spokane to Honolulu flights
Seattle to Hilo flights
Spokane to Kahului flights
Spokane to Lihue flights
Spokane to Kailua-Kona flights
Portland to Hilo flights
Pasco to Honolulu flights
Pasco to Kailua-Kona flights
Pasco to Lihue flights
Pasco to Kahului flights
Bellingham to Kahului flights
Yakima to Honolulu flights
Bellingham to Honolulu flights
Bellingham to Kailua-Kona flights
Seattle to Kapalua flights
Pullman to Kahului flights
Portland to Kapalua flights
Pullman to Honolulu flights
Seattle to Waimea (Big Island) flights
Portland to Waimea (Big Island) flights
Bellingham to Lihue flights
Yakima to Lihue flights
Spokane to Kapalua flights
Wenatchee to Kahului flights
Spokane to Hilo flights
Pullman to Kailua-Kona flights
Seattle to Hoolehua flights
Walla Walla to Lihue flights
Wenatchee to Lihue flights
Bellingham to Kapalua flights
Walla Walla to Kahului flights
Walla Walla to Honolulu flights
Pullman to Kapalua flights
Pasco to Kapalua flights
Seattle to Hana flights
Portland to Hoolehua flights
Portland to Lanai City flights
Portland to Hana flights
Spokane to Hana flights
Seattle to Lanai City flights

Top 6 airlines flying from Seattle to Kaua'i

Discover the top 6 airlines that operate flights from Seattle to Kaua'i. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$249Average$670FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$257Average$472FlexibilityNo cancel feeOn-time69%
DeltaCheapest$294Average$564FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$299Average$602FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$305Average$554FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$348Average$611FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.