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

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

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

As of August 2026, 52 flights take off from State of Washington and land in Kaua'i each week. The most common flight departure day for this route is Wed, with 17% of weekly flights taking off on this day.

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 12h 53m.

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

As of August 2026, there are 7 flights per day flying from State of Washington to Kaua'i. The most common time of day flights depart is 4:00PM, with 50% of flights taking off in the afternoon.

What airlines fly to Kaua'i?

Alaska Airlines, Delta and Southwest 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 67% 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 August 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.

$166 Cheap Flights from Washington to Kaua'i in 2026

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Find the cheapest flights from Washington to Kaua'i

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:14 am - 4:10 pmPDX Portland-LIH Lihue

12h 56m1 stop Phoenix Sky Harbor Intl

10:35 pm - 1:33 pmLIH Lihue-PDX Portland

12h 58m1 stop Phoenix Sky Harbor Intl

$332American Airlines

Tue, Nov 10 - Wed, Nov 18

5:15 am - 4:10 pmPDX Portland-LIH Lihue

12h 55m1 stop Phoenix Sky Harbor Intl

10:35 pm - 1:08 pmLIH Lihue-PDX Portland

12h 33m1 stop Phoenix Sky Harbor Intl

$334American Airlines

Thu, Nov 12 - Tue, Nov 17

5:30 am - 11:59 amPDX Portland-LIH Lihue

9h 29m1 stop San Francisco

10:48 pm - 12:00 pmLIH Lihue-PDX Portland

10h 12m1 stop San Francisco

$334United Airlines

Sun, Sep 13 - Mon, Sep 21

1:03 pm - 7:44 pmPDX Portland-LIH Lihue

9h 41m1 stop San Francisco

10:59 pm - 10:18 amLIH Lihue-PDX Portland

8h 19m1 stop San Francisco

$334United Airlines

Mon, Oct 19 - Mon, Oct 26

5:10 am - 6:05 pmPDX Portland-LIH Lihue

14h 55m2 stops Phoenix Sky Harbor Intl Honolulu

9:05 pm - 10:40 amLIH Lihue-PDX Portland

11h 35m1 stop Las Vegas Harry Reid Intl

$342Southwest

Thu, Nov 12 - Mon, Nov 16

7:20 am - 4:15 pmPDX Portland-LIH Lihue

10h 55m1 stop Oakland

4:05 pm - 7:45 amLIH Lihue-PDX Portland

13h 40m1 stop Oakland

$364Southwest

Wed, Nov 4 - Wed, Nov 11

11:25 am - 7:14 pmPDX Portland-LIH Lihue

10h 49m1 stop Seattle/Tacoma Intl

9:51 pm - 8:46 amLIH Lihue-PDX Portland

7h 55m1 stop Seattle/Tacoma Intl

$376Delta

Mon, Oct 19 - Mon, Oct 26

12:34 pm - 7:10 pmPDX Portland-LIH Lihue

9h 36m1 stop Seattle/Tacoma Intl

8:45 pm - 9:51 amLIH Lihue-PDX Portland

10h 06m1 stop Los Angeles

$376Delta

Thu, Sep 24 - Tue, Sep 29

4:59 pm - 8:14 pmSEA Seattle/Tacoma Intl-LIH Lihue

6h 15mnonstop

9:35 pm - 6:20 amLIH Lihue-SEA Seattle/Tacoma Intl

5h 45mnonstop

$397Alaska Airlines

Mon, Sep 21 - Wed, Sep 30

6:11 pm - 9:27 pmSEA Seattle/Tacoma Intl-LIH Lihue

6h 16mnonstop

11:29 pm - 7:20 amLIH Lihue-SEA Seattle/Tacoma Intl

5h 51mnonstop

$397Alaska Airlines

Mon, Oct 19 - Mon, Nov 2

Cheap last minute flights

Enter your travel dates to find the best prices.

5:12 am - 11:20 amGEG Spokane-LIH Lihue

9h 08m1 stop Portland

9:35 pm - 9:57 amLIH Lihue-GEG Spokane

9h 22m1 stop Seattle/Tacoma Intl

$617Multiple Airlines

Wed, Aug 19 - Wed, Sep 9

5:12 am - 11:20 amGEG Spokane-LIH Lihue

9h 08m1 stop Portland

7:21 pm - 11:37 amLIH Lihue-GEG Spokane

13h 16m2 stops Honolulu Seattle/Tacoma Intl

$623Multiple Airlines

Wed, Aug 19 - Wed, Sep 9

6:10 am - 2:55 pmSEA Seattle/Tacoma Intl-LIH Lihue

11h 45m1 stop Phoenix Sky Harbor Intl

10:00 pm - 11:10 amLIH Lihue-SEA Seattle/Tacoma Intl

10h 10m1 stop Los Angeles

$627American Airlines

Tue, Aug 18 - Fri, Aug 28

11:28 am - 2:40 pmSEA Seattle/Tacoma Intl-LIH Lihue

6h 12mnonstop

12:47 pm - 9:40 pmLIH Lihue-SEA Seattle/Tacoma Intl

5h 53mnonstop

$627Alaska Airlines

Tue, Aug 18 - Tue, Aug 25

6:13 pm - 9:25 pmSEA Seattle/Tacoma Intl-LIH Lihue

6h 12mnonstop

12:47 pm - 9:40 pmLIH Lihue-SEA Seattle/Tacoma Intl

5h 53mnonstop

$627Alaska Airlines

Tue, Aug 18 - Mon, Aug 24

4:05 pm - 7:16 pmSEA Seattle/Tacoma Intl-LIH Lihue

6h 11mnonstop

9:55 pm - 6:40 amLIH Lihue-SEA Seattle/Tacoma Intl

5h 45mnonstop

$642Delta

Tue, Aug 18 - Fri, Aug 28

7:10 am - 4:15 pmSEA Seattle/Tacoma Intl-LIH Lihue

12h 05m1 stop Oakland

8:25 pm - 10:30 amLIH Lihue-SEA Seattle/Tacoma Intl

11h 05m1 stop Las Vegas Harry Reid Intl

$646Southwest

Sun, Aug 16 - Tue, Aug 18

7:10 am - 4:15 pmSEA Seattle/Tacoma Intl-LIH Lihue

12h 05m1 stop Oakland

9:25 pm - 8:35 amLIH Lihue-SEA Seattle/Tacoma Intl

8h 10m1 stop Oakland

$646Southwest

Sun, Aug 16 - Sun, Aug 23

9:59 am - 5:41 pmSEA Seattle/Tacoma Intl-LIH Lihue

10h 42m1 stop Los Angeles

9:55 pm - 6:40 amLIH Lihue-SEA Seattle/Tacoma Intl

5h 45mnonstop

$652Delta

Tue, Aug 18 - Fri, Aug 28

1:16 pm - 7:44 pmSEA Seattle/Tacoma Intl-LIH Lihue

9h 28m1 stop San Francisco

1:00 pm - 11:26 amLIH Lihue-SEA Seattle/Tacoma Intl

19h 26m2 stops Los Angeles San Francisco

$873United Airlines

Sun, Aug 16 - Fri, Aug 21

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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

Oct 15

SEA6:11 pmSeattle/Tacoma Intl

6h 16m

LIH9:27 pmLihue

Oct 20

LIH3:45 pmLihue

13h 35m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$407

Alaska Airlines

Sep 14

PDX8:12 amPortland

27h 42m

1 stop

LIH8:54 amLihue

Sep 21

LIH11:25 amLihue

5h 25m

PDX7:50 pmPortland

$413

Alaska Airlines

Sep 28

PDX8:20 amPortland

6h 00m

LIH11:20 amLihue

Oct 26

LIH12:23 pmLihue

5h 24m

PDX8:47 pmPortland

$417

Delta flights from State of Washington to Kaua'i

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

Delta

Oct 19

PDX11:25 amPortland

10h 49m

1 stop

LIH7:14 pmLihue

Oct 29

LIH9:51 pmLihue

9h 54m

1 stop

PDX10:45 amPortland

$376

Delta

Oct 19

PDX5:30 amPortland

15h 06m

2 stops

LIH5:36 pmLihue

Oct 26

LIH8:48 pmLihue

10h 11m

1 stop

PDX9:59 amPortland

$382

Delta

Oct 20

PDX5:30 amPortland

15h 06m

2 stops

LIH5:36 pmLihue

Oct 26

LIH8:48 pmLihue

15h 03m

2 stops

PDX2:51 pmPortland

$387

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLihue

PDX Portland - LIH Lihue

PDXLIH

Portland

Tue 11/10

5:14 am-4:10 pm

1 stop12h 56m

Lihue

Wed 11/18

10:35 pm-1:33 pm

1 stop12h 58m

$332

PortlandLihue

PDX Portland - LIH Lihue

PDXLIH

Portland

Thu 11/12

5:15 am-4:10 pm

1 stop12h 55m

Lihue

Tue 11/17

10:35 pm-1:08 pm

1 stop12h 33m

$334

PortlandLihue

PDX Portland - LIH Lihue

PDXLIH

Portland

Sun 9/13

5:30 am-11:59 am

1 stop9h 29m

Lihue

Mon 9/21

10:48 pm-12:00 pm

1 stop10h 12m

$334

PortlandLihue

PDX Portland - LIH Lihue

PDXLIH

Portland

Mon 10/19

1:03 pm-7:44 pm

1 stop9h 41m

Lihue

Mon 10/26

10:59 pm-10:18 am

1 stop8h 19m

$334

PortlandLihue

PDX Portland - LIH Lihue

PDXLIH

Portland

Thu 11/12

5:10 am-6:05 pm

2 stops14h 55m

Lihue

Mon 11/16

9:05 pm-10:40 am

1 stop11h 35m

$342

PortlandLihue

PDX Portland - LIH Lihue

PDXLIH

Portland

Wed 11/4

7:20 am-4:15 pm

1 stop10h 55m

Lihue

Wed 11/11

4:05 pm-7:45 am

1 stop13h 40m

$364

PortlandLihue

PDX Portland - LIH Lihue

PDXLIH

Portland

Mon 10/19

11:25 am-7:14 pm

1 stop10h 49m

Lihue

Mon 10/26

9:51 pm-8:46 am

1 stop7h 55m

$376

PortlandLihue

PDX Portland - LIH Lihue

PDXLIH

Portland

Thu 9/24

12:34 pm-7:10 pm

1 stop9h 36m

Lihue

Tue 9/29

8:45 pm-9:51 am

1 stop10h 06m

$376

Quickest round-trip

SeattleLihue

SEA Seattle/Tacoma Intl - LIH Lihue

SEALIH

Seattle/Tacoma Intl

Mon 9/21

4:59 pm-8:14 pm

Nonstop6h 15m

Lihue

Wed 9/30

9:35 pm-6:20 am

Nonstop5h 45m

$397

SeattleLihue

SEA Seattle/Tacoma Intl - LIH Lihue

SEALIH

Seattle/Tacoma Intl

Mon 10/19

6:11 pm-9:27 pm

Nonstop6h 16m

Lihue

Mon 11/2

11:29 pm-7:20 am

Nonstop5h 51m

$397

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, January 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 $417. The month of May is another great option to travel to Kaua'i, with average flight prices from State of Washington averaging around $513.

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 Saturday because tickets tend to average around $697. 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 $685.

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 $574 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 $454 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 4% 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	$248
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 $248. The best round-trip flight deal from State of Washington to Kaua'i found on momondo in the last 72 hours is $486.

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 August 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 16.80% of all bookings. The subsequent popular models are Airbus A321neo at 14.90%, Boeing 737-900 at 8.55%, and Airbus A321-100/200 at 8.52%.

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 $204	Free Cancellation	Rating 7.8 2,817 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $221	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
United Airlines	PriceFrom $256	Free Cancellation	Rating 7.4 10,110 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $283	Free Cancellation	Rating 7.9 12,808 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $351	Free Cancellation	Rating 8.0 4,220 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 New Yorkfrom $73

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Flights to San Franciscofrom $56

Flights to Chicagofrom $56

Flights to Las Vegasfrom $50

Flights to Washington, D.C.from $52

Flights to Bostonfrom $88

Flights to Atlantafrom $42

Flights to Fort Lauderdalefrom $42

Flights to Dallasfrom $50

Cheap flights from Washington to Kaua'i from $166

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 11/2. 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

Delta flights from State of Washington to Kaua'i

Our best Delta 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

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Kaua'i

Popular cities in Kaua'i

Popular flights according to clicks in the last 7 days on momondo

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