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

$228+ Cheap flights from Washington, D.C. (WAS) 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LIH
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. 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 Washington, D.C. to Kaua'i

Cheapest flights from Washington, D.C. to Kaua'i
Explore the most affordable flight options available from Washington, D.C. to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Delta deal was found by Cheapflights users on 11/12. 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.
Fri 12/57:05 amIAD - LIH
2 stops18h 05mDelta
Tue 12/1610:55 pmLIH - IAD
2 stops19h 32mDelta
Deal found 11/12$416
This Delta deal was found by Cheapflights users on 11/12. 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.
Fri 12/57:15 amBWI - LIH
2 stops17h 55mDelta
Wed 12/179:50 pmLIH - BWI
2 stops16h 42mDelta
Deal found 11/12$435
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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 12/79:59 amDCA - LIH
1 stop30h 35mAlaska Airlines
Thu 12/1112:59 pmLIH - DCA
1 stop26h 01mAlaska Airlines
Deal found 11/12$444
This Delta deal was found by Cheapflights users on 11/12. 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.
Fri 12/56:07 amDCA - LIH
2 stops19h 03mDelta
Wed 12/179:50 pmLIH - DCA
1 stop12h 37mDelta
Deal found 11/12$451
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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 12/77:34 amIAD - LIH
1 stop19h 51mAlaska Airlines
Thu 12/112:53 pmLIH - IAD
1 stop21h 37mAlaska Airlines
Deal found 11/12$465
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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.
Fri 12/56:59 pmDCA - LIH
1 stop22h 10mAlaska Airlines
Wed 12/172:53 pmLIH - DCA
1 stop25h 26mAlaska Airlines
Deal found 11/12$472
This Delta deal was found by Cheapflights users on 11/12. 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 12/77:59 amDCA - LIH
2 stops17h 11mDelta
Thu 12/1110:55 pmLIH - DCA
2 stops15h 45mDelta
Deal found 11/12$476
This Delta deal was found by Cheapflights users on 11/12. 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.
Fri 12/56:07 amDCA - LIH
2 stops19h 03mDelta
Tue 12/169:50 pmLIH - DCA
2 stops19h 25mDelta
Deal found 11/12$478
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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.
Fri 12/56:30 pmIAD - LIH
1 stop32h 55mAlaska Airlines
Tue 12/1611:25 pmLIH - IAD
1 stop12h 11mAlaska Airlines
Deal found 11/12$486
This Delta deal was found by Cheapflights users on 11/12. 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.
Fri 12/57:05 amIAD - LIH
2 stops18h 05mDelta
Wed 12/1710:55 pmLIH - IAD
2 stops19h 32mDelta
Deal found 11/12$495
This United Airlines deal was found by Cheapflights users on 11/12. 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.
Fri 12/58:17 amIAD - LIH
1 stop13h 41mUnited Airlines
Tue 12/162:30 pmLIH - IAD
1 stop12h 00mUnited Airlines
Deal found 11/12$500
This Delta deal was found by Cheapflights users on 11/12. 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 12/77:01 amIAD - LIH
2 stops18h 09mDelta
Thu 12/1110:55 pmLIH - IAD
2 stops14h 26mDelta
Deal found 11/12$505

Cheap flight deals from Washington, D.C. to Kaua'i

Keep the following information in mind while searching for Washington, D.C. to Kaua'i flight deals. Data was last updated November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$395
(Delta)

One-way from

$228
(Delta)

Popular in

December

Cheapest in

September

Average price

$720
Provider with most accurate pricing for Washington, D.C. (WAS)-Lihue flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lihue flights.
Search Deals
From Washington, D.C. (WAS) to Kaua'i
Search Deals
One-way flight from Washington, D.C. (WAS) to Kaua'i
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 13, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Kaua'i that are best for you.

Fly from

Washington, D.C.

Fly to

Kaua'i

Route

Depart

Return

Price

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Fri 12/5

7:05 am-8:10 pm

2 stops18h 05m

Lihue

Tue 12/16

10:55 pm-11:27 pm

2 stops19h 32m

$416

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Fri 12/5

7:15 am-8:10 pm

2 stops17h 55m

Lihue

Wed 12/17

9:50 pm-7:32 pm

2 stops16h 42m

$435

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Sun 2/1

6:04 pm-10:41 pm

1 stop33h 37m

Lihue

Tue 2/10

6:33 pm-4:26 pm

2 stops16h 53m

$442

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Wed 2/25

8:59 am-12:47 pm

1 stop32h 48m

Lihue

Wed 3/4

4:50 pm-9:02 pm

1 stop23h 12m

$444

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Sun 12/7

9:59 am-11:34 am

1 stop30h 35m

Lihue

Thu 12/11

12:59 pm-8:00 pm

1 stop26h 01m

$444

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Tue 3/3

6:59 am-6:31 pm

2 stops16h 32m

Lihue

Wed 3/4

10:45 pm-3:20 pm

1 stop11h 35m

$450

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Wed 2/25

6:00 am-6:31 pm

2 stops17h 31m

Lihue

Wed 3/4

10:45 pm-3:20 pm

1 stop11h 35m

$450

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Wed 2/11

8:40 am-4:37 pm

1 stop12h 57m

Lihue

Wed 2/18

10:30 pm-4:38 pm

2 stops13h 08m

$451

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Fri 12/5

6:07 am-8:10 pm

2 stops19h 03m

Lihue

Wed 12/17

9:50 pm-3:27 pm

1 stop12h 37m

$451

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Wed 1/21

7:15 am-6:31 pm

2 stops16h 16m

Lihue

Tue 1/27

10:45 pm-7:09 pm

2 stops15h 24m

$456

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 47 results
1
2
3
...
5

Best time to book a flight from Washington, D.C. to Kaua'i

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

What is the cheapest month to book a flight from Washington, D.C. to Kaua'i?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Kaua'i (average of $247). Flying from Washington, D.C. to Kaua'i in March is currently the most expensive (average of $691). 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 WAS to FUS?

Find hourly flight availability from Washington, D.C. 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 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Kaua'i in the morning. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the evening.

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 13, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Washington, D.C. to Kaua'i. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,288 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,288 reviews
Alaska Airlines
8.0
Very good
11,288 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
11,288 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
8,007 reviews
Alaska Airlines
8.0
Very good
11,288 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
9,017 reviews
Alaska Airlines
8.0
Very good
11,288 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,051 reviews
Alaska Airlines
8.0
Very good
11,288 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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 long is the flight from Washington, D.C. to Kaua'i?

    A quick flight from Washington, D.C. to Kaua'i can take about 18h 05m. Delta provides one of the quickest options available for as low as $416. There are 4854 mi between Washington, D.C. and Kaua'i. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Washington, D.C. to Kaua'i one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $228. However, be on the lookout for offers from American Airlines and Alaska Airlines, as they are both options that can get you from Washington, D.C. to Kaua'i for a low price.

  • What are the most popular routes from Washington, D.C. to Kaua'i?

    The most popular flight routes from Washington, D.C. to Kaua'i are Washington, D.C. Dulles Intl - Lihue, Baltimore/Washington - Lihue and Washington, D.C. Reagan-National - Lihue.

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

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

  • How can I find direct flights from Washington, D.C. 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, D.C. to Kaua'i.

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

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Kaua'i?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Kaua'i (average of $247). Flying from Washington, D.C. to Kaua'i in March is currently the most expensive (average of $691). 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.

Top 5 airlines flying from Washington, D.C. to Kaua'i

Discover the top 5 airlines that operate flights from Washington, D.C. 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 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$406Average$669FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$499Average$883FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$504Average$730FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$515Average$772FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$628Average$848FlexibilityNo cancel feeOn-time63%

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.