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

$129+ Cheap flights from Washington 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIH
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington 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.

Cheap flight deals from Washington to Kaua'i

Keep the following information in mind while searching for Washington to Kaua'i flight deals. Data was last updated July 31, 2025.

Round-trip from

$257
(Delta)

One-way from

$129
(Delta)

Popular in

July

Cheapest in

January

Average price

$647

Good round-trip deal

$417 or less

Good one-way deal

$299 or less
From Washington to Kaua'i
Search Deals
One-way flight from Washington to Kaua'i
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($66 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 July 2025
Search Deals
Price to beat on a round-trip flight from Washington to Kaua'i.
Search Deals
Price to beat on a one-way flight from Washington to Kaua'i.
Search Deals

Find flight deals from Washington to Kaua'i

Cheapest flights from Washington to Kaua'i
Explore the most affordable flight options available from Washington to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Delta deal was found by Cheapflights users on 7/31. 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 9/111:40 pmPDX - LIH
1 stop8h 19mDelta
Thu 9/189:40 pmLIH - PDX
1 stop7h 57mDelta
Deal found 7/31$257
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 12/107:15 amPDX - LIH
Nonstop6h 40mAlaska Airlines
Mon 12/1512:55 pmLIH - PDX
Nonstop5h 42mAlaska Airlines
Deal found 7/29$278
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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.
Mon 12/18:03 amPDX - LIH
Nonstop6h 17mHawaiian Airlines
Tue 12/1612:55 pmLIH - PDX
Nonstop5h 42mHawaiian Airlines
Deal found 7/29$292
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/152:45 pmPDX - LIH
1 stop24h 30mAmerican Airlines
Wed 10/229:40 pmLIH - PDX
1 stop10h 07mAmerican Airlines
Deal found 7/29$336
This Hawaiian Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 9/1010:13 amSEA - LIH
1 stop8h 37mHawaiian Airlines
Wed 9/1710:30 pmLIH - SEA
Nonstop5h 45mHawaiian Airlines
Deal found 7/31$363
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 9/107:55 pmSEA - LIH
1 stop19h 26mAlaska Airlines
Wed 9/172:25 pmLIH - SEA
1 stop16h 55mAlaska Airlines
Deal found 7/31$366
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/162:42 pmSEA - LIH
1 stop24h 33mAmerican Airlines
Wed 10/229:40 pmLIH - SEA
1 stop9h 44mAmerican Airlines
Deal found 7/29$367
This Delta deal was found by Cheapflights users on 7/29. 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 8/2610:15 amSEA - LIH
1 stop10h 03mDelta
Tue 9/28:28 pmLIH - SEA
1 stop10h 17mDelta
Deal found 7/29$377
This Delta deal was found by Cheapflights users on 7/31. 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 10/199:17 amGEG - LIH
1 stop12h 46mDelta
Thu 11/610:40 pmLIH - GEG
1 stop7h 57mDelta
Deal found 7/31$379
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 10/1412:34 pmGEG - LIH
2 stops24h 13mAlaska Airlines
Thu 10/236:47 amLIH - GEG
2 stops14h 40mAlaska Airlines
Deal found 7/30$382
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2810:10 amSEA - LIH
1 stop8h 50mSouthwest
Tue 11/48:10 amLIH - SEA
2 stops10h 30mSouthwest
Deal found 7/29$382
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/185:10 amSEA - LIH
1 stop9h 01mUnited Airlines
Sun 8/2411:10 pmLIH - SEA
1 stop11h 23mUnited Airlines
Deal found 7/29$426

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 July 31, 2025.
Use the filters below to find and compare flights from Washington to Kaua'i that are best for you.

Fly from

Washington

Fly to

Kaua'i

Route

Depart

Return

Price

PortlandLihue

PDX - LIH

PDXLIH

Portland

Thu 9/11

1:40 pm-6:59 pm

1 stop8h 19m

Lihue

Thu 9/18

9:40 pm-8:37 am

1 stop7h 57m

$257

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 10/22

10:40 am-5:31 pm

1 stop9h 51m

Lihue

Mon 12/15

12:55 pm-8:37 pm

Nonstop5h 42m

$303

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 10/22

5:31 pm-12:12 pm

1 stop21h 41m

Lihue

Mon 10/27

7:42 pm-5:34 am

1 stop6h 52m

$326

PortlandLihue

PDX - LIH

PDXLIH

Portland

Wed 10/15

2:45 pm-12:15 pm

1 stop24h 30m

Lihue

Wed 10/22

9:40 pm-10:47 am

1 stop10h 07m

$336

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Wed 9/10

10:13 am-3:50 pm

1 stop8h 37m

Lihue

Wed 9/17

10:30 pm-7:15 am

Nonstop5h 45m

$363

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Wed 9/10

7:55 pm-12:21 pm

1 stop19h 26m

Lihue

Wed 9/17

2:25 pm-10:20 am

1 stop16h 55m

$366

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Thu 10/16

2:42 pm-12:15 pm

1 stop24h 33m

Lihue

Wed 10/22

9:40 pm-10:24 am

1 stop9h 44m

$367

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Tue 8/26

10:15 am-5:18 pm

1 stop10h 03m

Lihue

Tue 9/2

8:28 pm-9:45 am

1 stop10h 17m

$377

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Wed 8/27

1:21 pm-7:03 pm

1 stop8h 42m

Lihue

Wed 9/3

9:40 pm-10:34 am

1 stop9h 54m

$379

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Tue 10/28

10:10 am-4:00 pm

1 stop8h 50m

Lihue

Tue 11/4

8:10 am-8:40 pm

2 stops10h 30m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 38 results
1
2
3
4

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

Have a flexible travel schedule? Discover the best time to fly to Kaua'i from Washington 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 Washington to Kaua'i

What is the cheapest month to book a flight from State of Washington to Kaua'i?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Kaua'i (average of $440). Flying from State of Washington to Kaua'i in June is currently the most expensive (average of $689). 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 WA to FUS?

Find hourly flight availability from Washington 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 July 31, 2025.

When flying from State of Washington to Kaua'i, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from State of Washington to Kaua'i

Explore weekly flight availability from Washington 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 July 31, 2025.

The most flights from USWA to zzFUS are scheduled on a Wednesday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 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 July 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Washington to Kaua'i. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

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

  • How popular is this State of Washington to Kaua'i flight route?

    Within the past month, 4 users have taken a look at flights from Washington to Kaua'i.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $129. Southwest flights start at $139 while deals on United Airlines start at $149 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Kaua'i?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Kaua'i (average of $440). Flying from State of Washington to Kaua'i in June is currently the most expensive (average of $689). 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 Washington to Kaua'i

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Honolulu flights
Seattle to Honolulu flights
San Francisco to Honolulu flights
John F Kennedy Intl to Honolulu flights
Ontario to Honolulu flights
Los Angeles to Kahului flights
O'Hare Intl to Honolulu flights
Dallas/Fort Worth to Honolulu flights
Los Angeles to Lihue flights
San Francisco to Kahului flights
Atlanta to Honolulu flights
Newark to Honolulu flights
San Diego to Honolulu flights
Hobby to Honolulu flights
Los Angeles to Kailua-Kona flights
Seattle to Kahului flights
San Jose to Honolulu flights
Denver to Honolulu flights
Portland to Honolulu flights
Dulles Intl to Honolulu flights
George Bush Intcntl to Honolulu flights
San Francisco to Kailua-Kona flights
Sky Harbor Intl to Honolulu flights
Seattle to Kailua-Kona flights
Las Vegas to Honolulu flights
Boston to Honolulu flights
San Francisco to Lihue flights
Oakland to Honolulu flights
LaGuardia to Honolulu flights
Minneapolis to Honolulu flights
Sacramento to Honolulu flights
Salt Lake City to Honolulu flights
Seattle to Lihue flights
Long Beach to Honolulu flights
Denver to Kailua-Kona flights
San Diego to Kahului flights
Baltimore to Honolulu flights
Denver to Kahului flights
Reagan-National to Honolulu flights
John F Kennedy Intl to Kahului flights
Portland to Kahului flights
Denver to Lihue flights
O'Hare Intl to Kahului flights
Sky Harbor Intl to Kahului flights
Sacramento to Kahului flights
Portland to Kailua-Kona flights
Ontario to Kahului flights
San Jose to Kahului flights
Love Field to Honolulu flights
Detroit to Honolulu flights

Top 6 airlines flying from Washington to Kaua'i

Discover the top 6 airlines that operate flights from Washington 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$209Average$465FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$249Average$601FlexibilityNo cancel feeOn-time63%
DeltaCheapest$272Average$541FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$275Average$493FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$288Average$598FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$343Average$669FlexibilityNo 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.