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Kaua'i

$272+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIH
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 2/234:36 pm
BOS
-
LIH
2 stops26h 03m
Multiple Airlines
Mon 3/24:50 pm
LIH
-
BOS
2 stops19h 34m
Multiple Airlines
Deal found 2/2$493
This Delta deal was found by Cheapflights users on 2/2. 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 3/177:10 am
BOS
-
LIH
1 stop16h 31m
Delta
Tue 3/2410:05 pm
LIH
-
BOS
1 stop25h 27m
Delta
Deal found 2/2$514
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:44 pm
BOS
-
LIH
1 stop24h 03m
Alaska Airlines
Tue 3/103:50 pm
LIH
-
BOS
1 stop19h 34m
Alaska Airlines
Deal found 2/1$515
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 3/25:44 pm
BOS
-
LIH
1 stop24h 03m
Alaska Airlines
Mon 3/93:50 pm
LIH
-
BOS
2 stops19h 34m
Alaska Airlines
Deal found 2/2$517
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:24 pm
BOS
-
LIH
2 stops24h 30m
Multiple Airlines
Tue 3/104:22 pm
LIH
-
BOS
2 stops19h 02m
Multiple Airlines
Deal found 2/1$519
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 2/235:44 pm
BOS
-
LIH
1 stop24h 03m
Alaska Airlines
Mon 3/24:50 pm
LIH
-
BOS
2 stops19h 34m
Alaska Airlines
Deal found 2/2$523
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Mon 3/26:24 pm
BOS
-
LIH
2 stops24h 30m
Multiple Airlines
Mon 3/91:56 pm
LIH
-
BOS
1 stop21h 28m
Multiple Airlines
Deal found 2/1$528
This Delta deal was found by Cheapflights users on 2/2. 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.
Mon 2/237:15 am
BOS
-
LIH
1 stop16h 31m
Delta
Mon 3/29:20 pm
LIH
-
BOS
1 stop13h 39m
Delta
Deal found 2/2$543

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$486
(Alaska Airlines)

One-way from

$272
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$765
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. 8% potential increase in price ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 3, 2026.
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

Mon 3/2

4:36 pm-12:47 pm

2 stops25h 11m

Lihue

Mon 3/9

3:50 pm-5:24 pm

2 stops19h 34m

$522

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 3/4

7:15 am-6:46 pm

1 stop16h 31m

Lihue

Wed 3/11

8:21 pm-3:42 pm

1 stop13h 21m

$543

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 2/26

7:30 am-7:49 pm

1 stop17h 19m

Lihue

Sun 3/8

10:05 pm-4:14 pm

1 stop12h 09m

$554

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 3/15

5:59 pm-5:41 pm

2 stops29h 42m

Lihue

Tue 3/24

10:05 pm-5:32 am

1 stop25h 27m

$565

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 4/30

5:15 am-4:10 pm

2 stops16h 55m

Lihue

Sun 5/10

8:10 pm-6:45 pm

2 stops16h 35m

$570

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 2/22

7:30 am-7:49 pm

1 stop17h 19m

Lihue

Wed 3/4

10:40 pm-4:17 pm

1 stop12h 37m

$578

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sat 3/7

7:15 am-8:40 pm

2 stops18h 25m

Lihue

Tue 3/10

10:05 pm-7:46 pm

2 stops15h 41m

$584

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 2/24

5:44 pm-12:47 pm

1 stop24h 03m

Lihue

Wed 2/25

5:57 pm-4:36 pm

2 stops17h 39m

$599

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 3/15

5:44 pm-12:56 pm

1 stop25h 12m

Lihue

Tue 3/24

9:00 pm-11:59 pm

2 stops20h 59m

$600

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 3/1

5:44 pm-1:56 pm

1 stop25h 12m

Lihue

Thu 3/12

1:33 pm-5:24 pm

2 stops21h 51m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 21 results
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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, May is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $268). Flying from Boston to Kaua'i in July is currently the most expensive (average of $592). 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.

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 February 3, 2026.
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
11,833 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,833 reviews
Alaska Airlines
8.0
Very good
11,833 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,138 reviews
Alaska Airlines
8.0
Very good
11,833 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Hawaiian Airlines
7.8
Good
2,831 reviews
Alaska Airlines
8.0
Very good
11,833 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,236 reviews
Alaska Airlines
8.0
Very good
11,833 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,216 reviews
Alaska Airlines
8.0
Very good
11,833 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 16h 31m. Alaska Airlines provides one of the quickest options available for as low as $543. 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.

  • 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 $236 on Delta. Other airlines that offer cheap prices include American Airlines from $246 and United Airlines from $246 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 $268). Flying from Boston to Kaua'i in July is currently the most expensive (average of $592). 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 Boston to Kaua'i

Discover the top 5 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$282Average$952FlexibilityNo cancel feeOn-time85%
DeltaCheapest$301Average$714FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$444Average$628FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$483Average$838FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$502Average$913FlexibilityNo cancel feeOn-time69%

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