What is the cheapest airline that flies from Washington, D.C. to Kaua'i?

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

What airlines fly to Kaua'i?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Kaua'i from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 50% 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.

How long is the flight from Washington, D.C. to Kaua'i?

On average, it takes 17h 35m to fly from Washington, D.C. to Kaua'i if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Incheon Intl Airport (the most popular airport in Kaua'i). If you’re flying out of Baltimore and into Incheon Intl Airport, then the flight time is around 18h 10m.

When did momondo last update prices for flights from Washington, D.C. to Kaua'i?

Prices for flights from Washington, D.C. to Kaua'i refresh daily.

How many operators does momondo search for flights from Washington, D.C. to Kaua'i?

The number of operators available for flights from Washington, D.C. to Kaua'i is 5 as of August 2025.

How old do you have to be to fly from Washington, D.C. to Kaua'i?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. 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.

$197 Cheap Flights from Washington, D.C. to Kaua'i in 2025

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

Round-trip

One-way

Last minute

Cheap round-trip flights

5:45 am - 11:57 amBWI-LIH

36h 12m1 stop

4:07 pm - 6:34 amLIH-BWI

32h 27m2 stops

$379

Find Deal

Sat, Oct 4 - Wed, Oct 8

5:45 am - 1:56 pmBWI-LIH

38h 11m2 stops

1:36 pm - 7:01 amLIH-BWI

35h 25m1 stop

$394

Find Deal

Mon, Sep 8 - Tue, Sep 16

5:51 pm - 2:46 pmIAD-LIH

25h 55m1 stop

11:00 am - 5:25 pmLIH-IAD

25h 25m1 stop

$450Alaska Airlines

Find Deal

Sun, Dec 7 - Thu, Dec 11

7:53 am - 10:14 pmIAD-LIH

19h 21m1 stop

10:10 pm - 5:55 pmLIH-IAD

14h 45m1 stop

$451Alaska Airlines

Find Deal

Wed, Nov 26 - Wed, Dec 3

8:25 am - 3:58 pmIAD-LIH

13h 33m1 stop

8:30 pm - 3:55 pmLIH-IAD

14h 25m2 stops

$456United Airlines

Find Deal

Wed, Oct 29 - Tue, Nov 4

11:00 am - 7:58 pmDCA-LIH

14h 58m2 stops

12:57 pm - 9:58 amLIH-DCA

15h 01m2 stops

$462United Airlines

Find Deal

Sun, Sep 7 - Thu, Sep 18

6:30 am - 5:18 pmDCA-LIH

16h 48m2 stops

9:40 pm - 3:30 pmLIH-DCA

11h 50m1 stop

$464Delta

Find Deal

Mon, Sep 8 - Mon, Sep 15

6:15 am - 5:21 pmIAD-LIH

17h 06m2 stops

8:32 pm - 6:22 pmLIH-IAD

15h 50m2 stops

$470Delta

Find Deal

Mon, Sep 15 - Mon, Sep 22

4:34 pm - 1:18 pmIAD-LIH

25h 44m2 stops

2:49 pm - 10:19 amLIH-IAD

14h 30m2 stops

$520American Airlines

Find Deal

Sun, Nov 9 - Thu, Nov 13

8:40 am - 7:46 pmDCA-LIH

16h 06m1 stop

10:30 pm - 3:56 pmLIH-DCA

12h 26m1 stop

$532American Airlines

Find Deal

Sun, Jan 11 - Sun, Jan 18

United Airlines flights from Washington, D.C. to Kaua'i

Our best United Airlines deals on Washington, D.C. to Kaua'i flight tickets

United Airlines

Oct 29

IAD8:25 amWashington, D.C. Dulles Intl

13h 33m

1 stop

LIH3:58 pmLihue

Nov 4

LIH8:30 pmLihue

14h 25m

2 stops

IAD3:55 pmWashington, D.C. Dulles Intl

$456

Find similar

United Airlines

Sep 7

DCA11:00 amWashington, D.C. Reagan-National

14h 58m

2 stops

LIH7:58 pmLihue

Sep 18

LIH12:57 pmLihue

15h 01m

2 stops

DCA9:58 amWashington, D.C. Reagan-National

$462

Find similar

United Airlines

Sep 25

IAD6:30 amWashington, D.C. Dulles Intl

15h 06m

1 stop

LIH3:36 pmLihue

Sep 29

LIH7:40 pmLihue

11h 48m

1 stop

IAD1:28 pmWashington, D.C. Dulles Intl

$467

Find similar

American Airlines flights from Washington, D.C. to Kaua'i

Our best American Airlines deals on Washington, D.C. to Kaua'i flight tickets

American Airlines

Nov 9

IAD4:34 pmWashington, D.C. Dulles Intl

25h 44m

2 stops

LIH1:18 pmLihue

Nov 13

LIH2:49 pmLihue

14h 30m

2 stops

IAD10:19 amWashington, D.C. Dulles Intl

$520

Find similar

American Airlines

Jan 11

DCA8:40 amWashington, D.C. Reagan-National

16h 06m

1 stop

LIH7:46 pmLihue

Jan 18

LIH10:30 pmLihue

12h 26m

1 stop

DCA3:56 pmWashington, D.C. Reagan-National

$532

Find similar

American Airlines

Jan 11

DCA8:33 amWashington, D.C. Reagan-National

16h 13m

2 stops

LIH7:46 pmLihue

Jan 18

LIH10:30 pmLihue

12h 26m

1 stop

DCA3:56 pmWashington, D.C. Reagan-National

$538

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Sat 10/4

5:45 am-11:57 am

1 stop36h 12m

Lihue

Wed 10/8

4:07 pm-6:34 am

2 stops32h 27m

$379

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Mon 9/8

5:45 am-1:56 pm

2 stops38h 11m

Lihue

Tue 9/16

1:36 pm-7:01 am

1 stop35h 25m

$394

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Sun 12/7

5:51 pm-2:46 pm

1 stop25h 55m

Lihue

Thu 12/11

11:00 am-5:25 pm

1 stop25h 25m

$450

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Wed 11/26

7:53 am-10:14 pm

1 stop19h 21m

Lihue

Wed 12/3

10:10 pm-5:55 pm

1 stop14h 45m

$451

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Wed 10/29

8:25 am-3:58 pm

1 stop13h 33m

Lihue

Tue 11/4

8:30 pm-3:55 pm

2 stops14h 25m

$456

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Sun 9/7

11:00 am-7:58 pm

2 stops14h 58m

Lihue

Thu 9/18

12:57 pm-9:58 am

2 stops15h 01m

$462

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Mon 9/8

6:30 am-5:18 pm

2 stops16h 48m

Lihue

Mon 9/15

9:40 pm-3:30 pm

1 stop11h 50m

$464

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Mon 9/15

6:15 am-5:21 pm

2 stops17h 06m

Lihue

Mon 9/22

8:32 pm-6:22 pm

2 stops15h 50m

$470

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Sun 11/9

4:34 pm-1:18 pm

2 stops25h 44m

Lihue

Thu 11/13

2:49 pm-10:19 am

2 stops14h 30m

$520

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Sun 1/11

8:40 am-7:46 pm

1 stop16h 06m

Lihue

Sun 1/18

10:30 pm-3:56 pm

1 stop12h 26m

$532

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 Washington, D.C. 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, September is the cheapest month to fly from Washington, D.C. to Kaua'i. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $627. The month of December is another great option to travel to Kaua'i, with average flight prices from Washington, D.C. averaging around $668.

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

According to our data, Wednesday is the cheapest day to fly to Kaua'i from Washington, D.C.. The lowest ticket price found for a Wednesday departure recently was $751. 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 Monday because tickets tend to average around $1,072. 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 in the afternoon when flights can be purchased for as low as $785. In contrast, the most expensive time of day to depart to Kaua'i is at noon when prices are around $1,137.

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

You are more likely to see cheaper flights to Kaua'i from Washington, D.C. when booking week ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $841 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kaua'i from Washington, D.C. for as low as $596 on momondo.

Can stopping save me money on Washington, D.C. to Kaua'i flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to Kaua'i.

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

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Kaua'i

Best Price Found	$197
Fastest flight time	12h 27m
Direct flights	None
Airports in Kaua'i	1 airport

The best one-way flight to Kaua'i from Washington, D.C. in the past 72 hours is $197. The best round-trip flight deal from Washington, D.C. to Kaua'i found on momondo in the last 72 hours is $379.

The fastest flight from Washington, D.C. to Kaua'i takes 12h 27m

There are no direct flights from Washington, D.C. to Kaua'i. Popular non-direct routes for this connection are Washington, D.C. Reagan-National Airport - Lihue Airport, Baltimore/Washington Airport - Lihue Airport and Washington, D.C. Dulles Intl Airport - Lihue Airport.

There is 1 airport near Kaua'i: Lihue (LIH)

Search flight deals

When did momondo last update prices for flights from Washington, D.C. to Kaua'i?
Prices for flights from Washington, D.C. to Kaua'i refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Kaua'i?
The number of operators available for flights from Washington, D.C. to Kaua'i is 5 as of August 2025.
How old do you have to be to fly from Washington, D.C. to Kaua'i?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. 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 Washington, D.C. to Kaua'i?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. to Kaua'i is Airbus A320neo (11.92% of total bookings). The next most popular plane models are Boeing 777 (10.40%), Boeing 737 MAX 8 (8.73%), and Boeing 737-900 (7.73%).

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

Compare and see reviews for airlines that fly from Washington, D.C. to Kaua'i with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $406	Free Cancellation	Rating 8.0 7,980 reviews	Search Delta flights
Alaska Airlines	PriceFrom $437	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $484	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $547	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
Southwest	PriceFrom $628	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

Why use momondo?

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

It is quick and easy to find Washington, D.C. to Kaua'i flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Kaua'i that suits you.

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

Yes. All flights to Kaua'i from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to Kaua'i?

momondo helps you find the best flight between Washington, D.C. 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, D.C. to Kaua'i right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Kaua'i now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Kaua'i and let you know when they change.