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Kaua'i

$222+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIH
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/16. 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 12/187:15 amBOS - LIH
1 stop17h 55mDelta
Wed 1/710:45 pmLIH - BOS
1 stop12h 24mDelta
Deal found 12/16$803
This United Airlines deal was found by Cheapflights users on 12/18. 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 12/195:20 amBOS - LIH
2 stops17h 27mUnited Airlines
Fri 12/2611:59 pmLIH - BOS
1 stop12h 11mUnited Airlines
Deal found 12/18$843
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:15 amBOS - LIH
1 stop14h 49mUnited Airlines
Mon 12/298:30 pmLIH - BOS
1 stop12h 32mUnited Airlines
Deal found 12/15$881
This Delta deal was found by Cheapflights users on 12/15. 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.
Tue 12/236:35 pmBOS - LIH
1 stop28h 25mDelta
Mon 12/299:20 pmLIH - BOS
1 stop13h 48mDelta
Deal found 12/15$884
This Delta deal was found by Cheapflights users on 12/15. 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.
Thu 12/257:40 amBOS - LIH
1 stop17h 14mDelta
Mon 12/299:20 pmLIH - BOS
1 stop13h 48mDelta
Deal found 12/15$912
This Delta deal was found by Cheapflights users on 12/15. 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.
Tue 12/236:35 pmBOS - LIH
1 stop28h 25mDelta
Sun 12/289:20 pmLIH - BOS
1 stop13h 48mDelta
Deal found 12/15$924
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/186:36 amBOS - LIH
2 stops17h 03mAmerican Airlines
Wed 1/710:10 pmLIH - BOS
1 stop13h 24mAmerican Airlines
Deal found 12/17$940

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$418
(Alaska Airlines)

One-way from

$222
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$1,338
Provider with most accurate pricing for Boston Logan Intl-Lihue flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Lihue flights.
Search Deals
From Boston Logan Intl to Kaua'i
Search Deals
One-way flight from Boston Logan Intl to Kaua'i
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Tue 1/20

4:20 pm-1:03 pm

1 stop25h 43m

Lihue

Thu 1/29

3:30 pm-5:39 pm

2 stops21h 09m

$418

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 1/20

4:20 pm-1:03 pm

1 stop25h 43m

Lihue

Thu 1/29

10:25 am-5:39 pm

1 stop26h 14m

$433

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 1/20

4:20 pm-1:03 pm

1 stop25h 43m

Lihue

Tue 1/27

10:20 pm-4:20 pm

1 stop13h 00m

$439

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 1/20

4:20 pm-1:03 pm

1 stop25h 43m

Lihue

Tue 1/27

5:05 pm-4:20 pm

2 stops18h 15m

$444

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 2/5

8:00 am-4:37 pm

1 stop13h 37m

Lihue

Thu 2/26

9:46 pm-3:51 pm

1 stop13h 05m

$445

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 2/19

11:00 am-10:44 pm

1 stop16h 44m

Lihue

Thu 2/26

11:59 pm-7:56 pm

1 stop14h 57m

$445

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 1/8

8:00 am-4:37 pm

1 stop13h 37m

Lihue

Wed 1/14

10:10 pm-4:34 pm

1 stop13h 24m

$445

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 2/23

5:44 pm-12:47 pm

1 stop24h 03m

Lihue

Mon 3/2

1:33 pm-5:24 pm

2 stops22h 51m

$447

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 3/2

7:15 am-5:32 pm

1 stop15h 17m

Lihue

Mon 3/9

9:30 pm-6:05 pm

2 stops14h 35m

$450

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 1/20

4:20 pm-1:03 pm

1 stop25h 43m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 16 results
1
2

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, May is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $271). Flying from Boston to Kaua'i in July is currently the most expensive (average of $590). 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 December 18, 2025.

It’s optimal to fly from Boston to Kaua'i in the evening. By choosing this option you can save up to 41% on the cost of your flight, compared to a flight at noon.

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 December 18, 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
11,477 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,477 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,005 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Hawaiian Airlines
7.8
Good
2,820 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,091 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,054 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 25h 43m. Alaska Airlines provides one of the quickest options available for as low as $433. The distance from Boston to Kaua'i is about 5124 mi.

  • What are the cheapest airlines to fly from Boston to Kaua'i one-way?

    One-way options have recently been found by users for as low as $209 on Alaska Airlines. Other airlines that offer cheap prices include Hawaiian Airlines from $209 and Delta from $236 one-way.

  • 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, May is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $271). Flying from Boston to Kaua'i in July is currently the most expensive (average of $590). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$351Average$745FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$418Average$742FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$427Average$824FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$444Average$619FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$547Average$913FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$548Average$644FlexibilityNo cancel feeOn-time62%

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