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$258+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LIH
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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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 July 1, 2025.

Round-trip from

$515
(United Airlines)

One-way from

$258
(Southwest)

Popular in

March

Cheapest in

September

Average price

$796
From Washington, D.C. (WAS) to Kaua'i
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One-way flight from Washington, D.C. (WAS) to Kaua'i
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Highest demand for flights based on searches. 8% potential increase in price ($70 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 1, 2025.

This United Airlines deal was found by Cheapflights users on 6/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/218:32 amBWI - LIH
1 stop13h 04mUnited Airlines
Fri 10/311:15 pmLIH - BWI
1 stop12h 46mUnited Airlines
Deal found 6/30$515
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 10/317:38 amBWI - LIH
1 stop19h 41mAlaska Airlines
Mon 11/106:05 amLIH - BWI
2 stops19h 13mAlaska Airlines
Deal found 6/30$520
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 9/39:00 amIAD - LIH
2 stops30h 43mAlaska Airlines
Mon 9/82:25 pmLIH - IAD
2 stops20h 44mAlaska Airlines
Deal found 7/1$531
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 9/39:59 amDCA - LIH
2 stops29h 44mAlaska Airlines
Mon 9/82:25 pmLIH - DCA
2 stops24h 34mAlaska Airlines
Deal found 7/1$531
This Southwest deal was found by Cheapflights users on 7/1. 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.
Sun 9/286:10 amBWI - LIH
1 stop12h 40mSouthwest
Fri 10/38:40 pmLIH - BWI
2 stops16h 35mSouthwest
Deal found 7/1$541
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/226:00 amBWI - LIH
2 stops13h 56mAmerican Airlines
Tue 9/29:16 pmLIH - BWI
2 stops14h 25mAmerican Airlines
Deal found 6/30$577
This United Airlines deal was found by Cheapflights users on 6/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/136:30 amIAD - LIH
1 stop15h 05mUnited Airlines
Wed 8/201:02 pmLIH - IAD
1 stop11h 49mUnited Airlines
Deal found 6/30$599
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/275:00 amDCA - LIH
2 stops14h 56mAmerican Airlines
Wed 9/171:44 pmLIH - DCA
2 stops15h 16mAmerican Airlines
Deal found 6/30$610
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 8/216:25 amDCA - LIH
2 stops15h 11mUnited Airlines
Tue 8/267:40 pmLIH - DCA
1 stop13h 26mUnited Airlines
Deal found 7/1$618
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/138:40 pmDCA - LIH
2 stops22h 10mSouthwest
Wed 8/208:40 pmLIH - DCA
1 stop14h 15mSouthwest
Deal found 6/30$620
This Delta deal was found by Cheapflights users on 6/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:00 amIAD - LIH
1 stop18h 22mDelta
Thu 11/610:26 pmLIH - IAD
2 stops19h 49mDelta
Deal found 6/30$669
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/148:10 amIAD - LIH
1 stop31h 37mHawaiian Airlines
Thu 8/2110:30 pmLIH - IAD
1 stop27h 02mHawaiian Airlines
Deal found 6/30$680

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 July 1, 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

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Tue 10/21

8:32 am-3:36 pm

1 stop13h 04m

Lihue

Fri 10/31

1:15 pm-8:01 am

1 stop12h 46m

$515

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Fri 10/31

7:38 am-9:19 pm

1 stop19h 41m

Lihue

Mon 11/10

6:47 am-6:18 am

2 stops18h 31m

$520

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Wed 9/3

9:00 am-9:43 am

2 stops30h 43m

Lihue

Mon 9/8

2:25 pm-5:09 pm

2 stops20h 44m

$531

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Wed 9/3

9:59 am-9:43 am

2 stops29h 44m

Lihue

Mon 9/8

2:25 pm-8:59 pm

2 stops24h 34m

$531

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Sun 9/28

6:10 am-12:50 pm

1 stop12h 40m

Lihue

Fri 10/3

8:40 pm-7:15 pm

2 stops16h 35m

$541

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Fri 8/22

6:00 am-1:56 pm

2 stops13h 56m

Lihue

Tue 9/2

9:16 pm-5:41 pm

2 stops14h 25m

$577

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Wed 8/13

6:30 am-3:35 pm

1 stop15h 05m

Lihue

Wed 8/20

1:02 pm-6:51 am

1 stop11h 49m

$599

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Wed 8/27

5:00 am-1:56 pm

2 stops14h 56m

Lihue

Wed 9/17

1:44 pm-11:00 am

2 stops15h 16m

$610

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Thu 8/21

6:25 am-3:36 pm

2 stops15h 11m

Lihue

Tue 8/26

7:40 pm-3:06 pm

1 stop13h 26m

$618

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Wed 8/13

8:40 pm-12:50 pm

2 stops22h 10m

Lihue

Wed 8/20

8:40 pm-4:55 pm

1 stop14h 15m

$620

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 25 results
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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, January is the cheapest month in which you can book a flight from Washington, D.C. to Kaua'i (average of $440). Flying from Washington, D.C. 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 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 July 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to Kaua'i as you normally would.

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 1, 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
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,974 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,538 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $258. However, be on the lookout for offers from Alaska Airlines and Hawaiian 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, Washington, D.C. Reagan-National - Lihue and Baltimore/Washington - 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, January is the cheapest month in which you can book a flight from Washington, D.C. to Kaua'i (average of $440). Flying from Washington, D.C. 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

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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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$406Average$689FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$437Average$773FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$484Average$744FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$574Average$915FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$628Average$911FlexibilityNo cancel feeOn-time63%

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