How long is the flight from State of Washington to Kaua'i?

On average, it takes 9h 15m to fly from State of Washington to Kaua'i if you fly out of Seattle (the most popular airport in State of Washington) and into Copenhagen (the most popular airport in Kaua'i). If you’re flying out of Spokane and into Copenhagen, then the flight time is around 15h 55m.

How many flights depart from State of Washington to Kaua'i on average per day?

As of June 2026, there are 8 flights per day flying from State of Washington to Kaua'i. The most common time of day flights depart is 3:00PM, with 50% of flights taking off in the afternoon.

How many flights depart from State of Washington to Kaua'i on average per week?

As of June 2026, 59 flights take off from State of Washington and land in Kaua'i each week. The most common flight departure day for this route is Tue, with 19% of weekly flights taking off on this day.

What is the cheapest airline that flies from Washington to Kaua'i?

United Airlines, Alaska Airlines, and Delta are the most popular carriers operating from Washington to Kaua'i

What airlines fly to Kaua'i?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Kaua'i from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 5 different airlines that fly to Kaua'i on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Washington to Kaua'i?

Prices for flights from Washington to Kaua'i are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to Kaua'i?

The number of operators available for flights from Washington to Kaua'i is 7 as of June 2026.

How old do you have to be to fly from Washington to Kaua'i?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Kaua'i.

What documentation or ID do you need to fly to Kaua'i?

The travel and health documents required for your trip to Kaua'i can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kaua'i. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$158 Cheap Flights from Washington to Kaua'i in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Kaua'i

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:16 pm - 10:30 pm

SEA

LIH

11h 14m

1 stop

1:46 pm - 1:01 am

LIH

SEA

9h 15m

1 stop

$316United Airlines

Mon, Nov 2 - Mon, Nov 9

11:15 am - 7:44 pm

PDX

LIH

11h 29m

1 stop

10:48 pm - 12:00 pm

LIH

PDX

10h 12m

1 stop

$316United Airlines

Thu, Aug 27 - Mon, Aug 31

12:20 pm - 10:30 pm

SEA

LIH

12h 10m

2 stops

11:59 pm - 12:20 pm

LIH

SEA

10h 21m

1 stop

$322United Airlines

Mon, Nov 2 - Mon, Nov 9

3:27 pm - 10:30 pm

SEA

LIH

9h 03m

1 stop

11:59 pm - 12:20 pm

LIH

SEA

10h 21m

1 stop

$326United Airlines

Sun, Nov 1 - Mon, Nov 9

6:11 pm - 9:30 pm

SEA

LIH

6h 19mnonstop

10:31 pm - 7:20 am

LIH

SEA

5h 49mnonstop

$337Alaska Airlines

Thu, Oct 15 - Tue, Oct 20

4:05 pm - 7:16 pm

SEA

LIH

6h 11mnonstop

9:55 pm - 6:40 am

LIH

SEA

5h 45mnonstop

$357Delta

Wed, Aug 19 - Mon, Aug 24

4:08 pm - 7:23 pm

SEA

LIH

6h 15mnonstop

12:55 pm - 8:13 am

LIH

SEA

16h 18m

1 stop

$362Multiple Airlines

Mon, Aug 24 - Mon, Aug 31

2:45 pm - 3:13 pm

PDX

LIH

27h 28m

1 stop

11:25 am - 7:50 pm

LIH

PDX

5h 25mnonstop

$364Multiple Airlines

Mon, Aug 24 - Tue, Sep 1

4:05 pm - 7:16 pm

SEA

LIH

6h 11mnonstop

8:41 pm - 9:57 am

LIH

SEA

10h 16m

1 stop

$366Delta

Wed, Aug 19 - Mon, Aug 24

1:49 pm - 10:19 pm

PSC

LIH

10h 30m

1 stop

11:24 pm - 10:25 am

LIH

PSC

9h 01m

1 stop

$478Alaska Airlines

Mon, Nov 2 - Thu, Nov 5

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Alaska Airlines flights from State of Washington to Kaua'i

Our best Alaska Airlines deals on State of Washington to Kaua'i flight tickets

Alaska Airlines

Nov 2

SEA5:57 pmSeattle/Tacoma Intl

6h 22m

LIH10:19 pmLihue

Nov 9

LIH11:24 pmLihue

5h 51m

SEA7:15 amSeattle/Tacoma Intl

$337

Alaska Airlines

Oct 2

SEA4:59 pmSeattle/Tacoma Intl

6h 15m

LIH8:14 pmLihue

Oct 8

LIH10:31 pmLihue

5h 49m

SEA7:20 amSeattle/Tacoma Intl

$387

Alaska Airlines

Aug 21

SEA4:08 pmSeattle/Tacoma Intl

6h 15m

LIH7:23 pmLihue

Aug 27

LIH9:35 pmLihue

5h 45m

SEA6:20 amSeattle/Tacoma Intl

$388

United Airlines flights from State of Washington to Kaua'i

Our best United Airlines deals on State of Washington to Kaua'i flight tickets

United Airlines

Nov 2

SEA1:16 pmSeattle/Tacoma Intl

11h 14m

1 stop

LIH10:30 pmLihue

Nov 9

LIH1:46 pmLihue

9h 15m

1 stop

SEA1:01 amSeattle/Tacoma Intl

$316

United Airlines

Nov 2

SEA12:20 pmSeattle/Tacoma Intl

12h 10m

2 stops

LIH10:30 pmLihue

Nov 9

LIH11:59 pmLihue

10h 21m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

$322

United Airlines

Nov 1

SEA3:27 pmSeattle/Tacoma Intl

9h 03m

1 stop

LIH10:30 pmLihue

Nov 9

LIH11:59 pmLihue

10h 21m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

$326

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Mon 11/2

1:16 pm-10:30 pm

1 stop11h 14m

Lihue

Mon 11/9

1:46 pm-1:01 am

1 stop9h 15m

$316

PortlandLihue

PDX - LIH

PDXLIH

Portland

Thu 8/27

11:15 am-7:44 pm

1 stop11h 29m

Lihue

Mon 8/31

10:48 pm-12:00 pm

1 stop10h 12m

$316

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Mon 11/2

12:20 pm-10:30 pm

2 stops12h 10m

Lihue

Mon 11/9

11:59 pm-12:20 pm

1 stop10h 21m

$322

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Sun 11/1

3:27 pm-10:30 pm

1 stop9h 03m

Lihue

Mon 11/9

11:59 pm-12:20 pm

1 stop10h 21m

$326

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Thu 10/15

6:11 pm-9:30 pm

Nonstop6h 19m

Lihue

Tue 10/20

10:31 pm-7:20 am

Nonstop5h 49m

$337

Quickest round-trip

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Wed 8/19

4:05 pm-7:16 pm

Nonstop6h 11m

Lihue

Mon 8/24

9:55 pm-6:40 am

Nonstop5h 45m

$357

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Mon 8/24

4:08 pm-7:23 pm

Nonstop6h 15m

Lihue

Mon 8/31

12:55 pm-8:13 am

1 stop16h 18m

$362

PortlandLihue

PDX - LIH

PDXLIH

Portland

Mon 8/24

2:45 pm-3:13 pm

1 stop27h 28m

Lihue

Tue 9/1

11:25 am-7:50 pm

Nonstop5h 25m

$364

SeattleLihue

SEA - LIH

SEALIH

Seattle/Tacoma Intl

Wed 8/19

4:05 pm-7:16 pm

Nonstop6h 11m

Lihue

Mon 8/24

8:41 pm-9:57 am

1 stop10h 16m

$366

PascoLihue

PSC - LIH

PSCLIH

Pasco Tri Cities

Mon 11/2

1:49 pm-10:19 pm

1 stop10h 30m

Lihue

Thu 11/5

11:24 pm-10:25 am

1 stop9h 01m

$478

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Kaua'i

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

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

In general, April is the cheapest month to fly from State of Washington to Kaua'i. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $178. The month of May is another great option to travel to Kaua'i, with average flight prices from State of Washington averaging around $183.

What is the cheapest day to depart on your flight to Kaua'i?

According to our data, Thursday is the cheapest day to fly to Kaua'i from State of Washington. The lowest ticket price found for a Thursday departure recently was $527. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $671. These prices are subject to change though, so be sure to set up a Price Alert for flights to Kaua'i.

What is the cheapest time of day to depart on your flight to Kaua'i?

The cheapest time of day to fly to Kaua'i is at noon when flights can be purchased for as low as $509. In contrast, the most expensive time of day to depart to Kaua'i is in the morning when prices are around $682.

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

Fly from Seattle/Tacoma Intl to Lihue for the best Washington - Kaua'i flight prices

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

You are more likely to see cheaper flights to Kaua'i from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $565 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kaua'i from State of Washington for as low as $439 on momondo.

What cabin class options are available on State of Washington to Kaua'i flights?

There are 4 cabin classes available to choose from on State of Washington to Kaua'i flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to Kaua'i flights?

You could potentially save up to 33% on your flight if you consider stops on a State of Washington to Kaua'i flight.

Cheap State of Washington to Kaua'i flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Kaua'i

Best Price Found	$324
Fastest flight time	5h 54m
Direct flights	Every day
Airports in Kaua'i	1 airport

The best one-way flight to Kaua'i from State of Washington in the past 72 hours is $324. The best round-trip flight deal from State of Washington to Kaua'i found on momondo in the last 72 hours is $526.

The fastest flight from State of Washington to Kaua'i takes 5h 54m

Direct flights go from State of Washington to Kaua'i every day.

There is 1 airport in Kaua'i. From State of Washington there are direct flights to Lihue (LIH).

Search flight deals

Frequently asked questions about flying from Washington to Kaua'i

When did momondo last update prices for flights from Washington to Kaua'i?
Prices for flights from Washington to Kaua'i are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Kaua'i?
The number of operators available for flights from Washington to Kaua'i is 7 as of June 2026.
How old do you have to be to fly from Washington to Kaua'i?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Kaua'i.
What documentation or ID do you need to fly to Kaua'i?
The travel and health documents required for your trip to Kaua'i can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kaua'i. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from State of Washington to Kaua'i?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Kaua'i is Boeing 737-800 Passenger/BBJ2 (winglets), representing 15.93% of all bookings. The subsequent popular models are Airbus A321neo at 14.95%, Boeing 737-900 at 8.98%, and Boeing 737 MAX 8 at 8.21%.

Best airlines flying from State of Washington to Kaua'i

Compare and see reviews for airlines that fly from State of Washington to Kaua'i with momondo

Airline	Rating	Free Cancellation	Price
Hawaiian Airlines	PriceFrom $189	Free Cancellation	Rating 7.8 2,825 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $224	Free Cancellation	Rating 7.8 8,451 reviews	Search Delta flights
United Airlines	PriceFrom $256	Free Cancellation	Rating 7.4 9,904 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $284	Free Cancellation	Rating 7.9 12,599 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $351	Free Cancellation	Rating 7.9 4,247 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Kaua'i?

Finding the right flight to Kaua'i from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kaua'i quick and easy, saving you time and money.

Can I find flights from Washington to Kaua'i with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Kaua'i from Washington with this policy.

How can momondo help me find flights from Washington to Kaua'i?

momondo helps you find the best flight between Washington and Kaua'i by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington to Kaua'i right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington to Kaua'i flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Flights to Dallasfrom $104

Cheap flights from Washington to Kaua'i from $148

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Kaua'i departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Alaska Airlines flights from State of Washington to Kaua'i

Our best Alaska Airlines deals on State of Washington to Kaua'i flight tickets

United Airlines flights from State of Washington to Kaua'i

Our best United Airlines deals on State of Washington to Kaua'i flight tickets

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How to get the cheapest flight ticket from State of Washington to Kaua'i

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

What is the cheapest day to depart on your flight to Kaua'i?

What is the cheapest time of day to depart on your flight to Kaua'i?

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

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

What cabin class options are available on State of Washington to Kaua'i flights?

Can stopping save me money on State of Washington to Kaua'i flights?

What is the cheapest airline that flies from Washington to Kaua'i?

What airlines fly to Kaua'i?

How many flights depart from State of Washington to Kaua'i on average per day?

How many flights depart from State of Washington to Kaua'i on average per week?

How long is the flight from State of Washington to Kaua'i?

Cheap State of Washington to Kaua'i flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Kaua'i

Best Price Found

Fastest flight time

Direct flights

Airports in Kaua'i

Frequently asked questions about flying from Washington to Kaua'i

Best airlines flying from State of Washington to Kaua'i

Compare and see reviews for airlines that fly from State of Washington to Kaua'i with momondo

Why use momondo?

An easier way to manage your Kaua'i trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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