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Kaua'i

$267+ Cheap flights from Boston (BOS) 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIH
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Boston to Kaua'i

Keep the following information in mind while searching for Boston to Kaua'i flight deals. Data was last updated September 15, 2025.

Round-trip from

$508
(Delta)

One-way from

$267
(Alaska Airlines)

Popular in

December

Cheapest in

November

Average price

$620
From Boston Logan Intl to Kaua'i
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One-way flight from Boston Logan Intl to Kaua'i
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Highest demand for flights based on searches. 3% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Boston to Kaua'i

Cheapest flights from Boston to Kaua'i
Explore the most affordable flight options available from Boston to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 10/306:59 pmBOS - LIH
1 stop20h 47mAlaska Airlines
Sat 11/86:20 pmLIH - BOS
1 stop30h 26mAlaska Airlines
Deal found 9/14$513
This Delta deal was found by Cheapflights users on 9/15. 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 10/317:20 amBOS - LIH
1 stop17h 45mDelta
Sun 11/99:29 pmLIH - BOS
1 stop13h 31mDelta
Deal found 9/15$517
This Delta deal was found by Cheapflights users on 9/13. 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.
Tue 11/46:15 amBOS - LIH
2 stops18h 50mDelta
Tue 11/1110:44 pmLIH - BOS
2 stops16h 16mDelta
Deal found 9/13$528
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 10/168:25 pmBOS - LIH
1 stop19h 22mAlaska Airlines
Sun 10/266:00 amLIH - BOS
1 stop18h 00mAlaska Airlines
Deal found 9/14$563
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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.
Tue 11/46:59 pmBOS - LIH
1 stop20h 47mAlaska Airlines
Tue 11/119:00 pmLIH - BOS
1 stop28h 00mAlaska Airlines
Deal found 9/13$566
This Delta deal was found by Cheapflights users on 9/15. 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 9/287:25 amBOS - LIH
1 stop17h 34mDelta
Mon 10/69:40 pmLIH - BOS
2 stops19h 03mDelta
Deal found 9/15$579
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 10/28:23 pmBOS - LIH
1 stop19h 24mAlaska Airlines
Sat 10/189:00 pmLIH - BOS
1 stop27h 00mAlaska Airlines
Deal found 9/14$610

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 September 15, 2025.
Use the filters below to find and compare flights from Boston to Kaua'i that are best for you.

Fly from

Boston

Fly to

Kaua'i

Route

Depart

Return

Price

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 1/21

7:00 am-7:47 pm

1 stop17h 47m

Lihue

Sun 1/25

10:45 pm-3:50 pm

1 stop12h 05m

$508

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 10/30

6:59 pm-9:46 am

1 stop20h 47m

Lihue

Sat 11/8

9:00 pm-5:46 am

1 stop27h 46m

$513

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 1/1

6:30 am-3:45 pm

1 stop14h 15m

Lihue

Thu 1/29

11:00 am-6:09 pm

1 stop26h 09m

$517

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 1/15

7:05 am-8:31 pm

1 stop18h 26m

Lihue

Tue 1/20

10:26 pm-4:30 pm

1 stop13h 04m

$517

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 2/10

7:05 am-8:31 pm

1 stop18h 26m

Lihue

Wed 2/25

10:26 pm-4:30 pm

1 stop13h 04m

$517

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Fri 10/31

7:20 am-7:05 pm

1 stop17h 45m

Lihue

Sun 11/9

9:29 pm-4:00 pm

1 stop13h 31m

$517

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 12/9

4:40 pm-1:38 pm

2 stops25h 58m

$274

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 11/18

7:15 am-8:04 pm

1 stop17h 49m

$279

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 11/2

7:20 am-8:05 pm

1 stop17h 45m

$279

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 11/2

5:17 am-10:23 am

2 stops34h 06m

$281

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 12 results
1
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Best time to book a flight from Boston to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i from Boston 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 Boston to Kaua'i

What is the cheapest month to book a flight from Boston to Kaua'i?

Currently, January is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $440). Flying from Boston 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 BOS to FUS?

Find hourly flight availability from Boston 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 September 15, 2025.

When flying from Boston to Kaua'i, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Boston to Kaua'i have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,954 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,929 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Boston 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 airport do you fly from for flights from Boston to Kaua'i?

    If you book a flight to Kaua'i from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston.

  • How long is the flight from Boston to Kaua'i?

    A quick flight from Boston to Kaua'i can take about 17h 47m. Delta provides one of the quickest options available for as low as $508. The distance from Boston to Kaua'i is about 5124 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Boston to Kaua'i that include hotel bookings?

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

  • How can I find direct flights from Boston to Kaua'i?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Kaua'i.

  • Can I find deals for business class flights from Boston to Kaua'i?

    Yes. Cheapflights offers flight deals from Boston 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 Boston to Kaua'i?

    Currently, January is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $440). Flying from Boston 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

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Top 6 airlines flying from Boston to Kaua'i

Discover the top 6 airlines that operate flights from Boston 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$314Average$584FlexibilityNo cancel feeOn-time62%
DeltaCheapest$352Average$711FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$417Average$719FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$442Average$661FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$444Average$626FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$459Average$917FlexibilityNo cancel feeOn-time69%

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