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

On average, it takes 10h 01m 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 Copenhagen (the most popular airport in Kaua'i). If you’re flying out of Baltimore and into Copenhagen, then the flight time is around 10h 05m.

What airlines fly to Kaua'i?

United Airlines, American Airlines and Southwest 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 66% 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.

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

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 April 2026.

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.

$222 Cheap Flights from Washington, D.C. to Kaua'i in 2026

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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

Enter your travel dates to find the best prices.

6:00 am - 5:12 pm

BWI

LIH

17h 12m

2 stops

9:26 pm - 8:51 pm

LIH

BWI

17h 25m

2 stops

$489Delta

Wed, Sep 9 - Tue, Sep 15

8:59 am - 2:24 pm

DCA

LIH

35h 25m

1 stop

3:04 pm - 9:00 pm

LIH

DCA

23h 56m

1 stop

$503Alaska Airlines

Sun, May 3 - Thu, May 7

8:59 am - 8:29 pm

DCA

LIH

17h 30m

2 stops

3:04 pm - 9:00 pm

LIH

DCA

23h 56m

1 stop

$509Multiple Airlines

Mon, Apr 27 - Thu, Apr 30

7:00 am - 5:40 pm

IAD

LIH

16h 40m

1 stop

8:20 pm - 6:53 pm

LIH

IAD

16h 33m

2 stops

$510Delta

Wed, Apr 29 - Wed, May 6

5:00 am - 3:15 pm

DCA

LIH

16h 15m

2 stops

2:12 pm - 11:03 am

LIH

DCA

14h 51m

2 stops

$515American Airlines

Mon, Apr 27 - Thu, Apr 30

4:34 pm - 11:11 am

BWI

LIH

24h 37m

1 stop

7:28 pm - 3:34 pm

LIH

BWI

14h 06m

2 stops

$533Multiple Airlines

Wed, Sep 9 - Tue, Sep 15

6:00 am - 6:40 pm

DCA

LIH

18h 40m

2 stops

9:25 pm - 10:00 pm

LIH

DCA

18h 35m

2 stops

$533Delta

Wed, Apr 29 - Wed, May 6

6:15 am - 3:47 pm

IAD

LIH

15h 32m

2 stops

1:13 pm - 7:02 am

LIH

IAD

11h 49m

1 stop

$540United Airlines

Sun, Apr 26 - Mon, May 4

7:05 am - 3:15 pm

DCA

LIH

14h 10m

1 stop

9:30 pm - 3:59 pm

LIH

DCA

12h 29m

1 stop

$544American Airlines

Mon, Apr 27 - Thu, Apr 30

8:25 am - 3:47 pm

IAD

LIH

13h 22m

1 stop

1:13 pm - 7:35 am

LIH

IAD

12h 22m

1 stop

$576United Airlines

Sun, Apr 26 - Mon, May 4

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

Apr 27

DCA5:00 amWashington, D.C. Reagan-National

16h 15m

2 stops

LIH3:15 pmLihue

Apr 30

LIH2:12 pmLihue

14h 51m

2 stops

DCA11:03 amWashington, D.C. Reagan-National

$515

American Airlines

Apr 27

DCA7:05 amWashington, D.C. Reagan-National

14h 10m

1 stop

LIH3:15 pmLihue

Apr 30

LIH9:30 pmLihue

12h 29m

1 stop

DCA3:59 pmWashington, D.C. Reagan-National

$544

American Airlines

Apr 16

BWI5:05 amBaltimore/Washington

16h 10m

2 stops

LIH3:15 pmLihue

Apr 27

LIH9:30 pmLihue

14h 30m

2 stops

BWI6:00 pmBaltimore/Washington

$547

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

Apr 26

IAD6:15 amWashington, D.C. Dulles Intl

15h 32m

2 stops

LIH3:47 pmLihue

May 4

LIH1:13 pmLihue

11h 49m

1 stop

IAD7:02 amWashington, D.C. Dulles Intl

$540

United Airlines

Apr 7

BWI8:00 amBaltimore/Washington

13h 47m

1 stop

LIH3:47 pmLihue

Apr 21

LIH7:35 pmLihue

13h 36m

1 stop

BWI3:11 pmBaltimore/Washington

$565

United Airlines

Apr 7

BWI8:00 amBaltimore/Washington

13h 47m

1 stop

LIH3:47 pmLihue

Apr 21

LIH7:35 pmLihue

15h 58m

2 stops

BWI5:33 pmBaltimore/Washington

$571

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Wed 9/9

6:00 am-5:12 pm

2 stops17h 12m

Lihue

Tue 9/15

9:26 pm-8:51 pm

2 stops17h 25m

$489

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Sun 5/3

8:59 am-2:24 pm

1 stop35h 25m

Lihue

Thu 5/7

3:04 pm-9:00 pm

1 stop23h 56m

$503

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Mon 4/27

8:59 am-8:29 pm

2 stops17h 30m

Lihue

Thu 4/30

3:04 pm-9:00 pm

1 stop23h 56m

$509

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Wed 4/29

7:00 am-5:40 pm

1 stop16h 40m

Lihue

Wed 5/6

8:20 pm-6:53 pm

2 stops16h 33m

$510

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Mon 4/27

5:00 am-3:15 pm

2 stops16h 15m

Lihue

Thu 4/30

2:12 pm-11:03 am

2 stops14h 51m

$515

BaltimoreLihue

BWI - LIH

BWILIH

Baltimore/Washington

Wed 9/9

4:34 pm-11:11 am

1 stop24h 37m

Lihue

Tue 9/15

7:28 pm-3:34 pm

2 stops14h 06m

$533

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Wed 4/29

6:00 am-6:40 pm

2 stops18h 40m

Lihue

Wed 5/6

9:25 pm-10:00 pm

2 stops18h 35m

$533

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Sun 4/26

6:15 am-3:47 pm

2 stops15h 32m

Lihue

Mon 5/4

1:13 pm-7:02 am

1 stop11h 49m

$540

Washington, D.C.Lihue

DCA - LIH

DCALIH

Washington, D.C. Reagan-National

Mon 4/27

7:05 am-3:15 pm

1 stop14h 10m

Lihue

Thu 4/30

9:30 pm-3:59 pm

1 stop12h 29m

$544

Quickest round-trip

Washington, D.C.Lihue

IAD - LIH

IADLIH

Washington, D.C. Dulles Intl

Sun 4/26

8:25 am-3:47 pm

1 stop13h 22m

Lihue

Mon 5/4

1:13 pm-7:35 am

1 stop12h 22m

$576

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, January 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 $628. The month of September is another great option to travel to Kaua'i, with average flight prices from Washington, D.C. averaging around $633.

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 weeks ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $788 when searching weeks 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 $542 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

Fastest flight time	13h 47m
Direct flights	None

The fastest flight from Washington, D.C. to Kaua'i takes 13h 47m

There are no direct flights from Washington, D.C. to Kaua'i. There are no popular flight routes from Washington, D.C. to Kaua'i.

Search flight deals

Frequently asked questions about flying from Washington, D.C. to Kaua'i

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 April 2026.
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 A320-100/200 (11.92% of total bookings). The next most popular plane models are Airbus A320neo (11.29%), Boeing 777 (11.11%), and Airbus A321neo (7.86%).

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 $228	Free Cancellation	Rating 7.9 8,367 reviews	Search Delta flights
Alaska Airlines	PriceFrom $376	Free Cancellation	Rating 7.9 12,145 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $499	Free Cancellation	Rating 7.4 9,529 reviews	Search United Airlines flights
American Airlines	PriceFrom $540	Free Cancellation	Rating 7.1 11,545 reviews	Search American Airlines flights
Southwest	PriceFrom $628	Free Cancellation	Rating 8.0 4,334 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.