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Kaua'i

$264+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIH
Jun 17 — Jun 241
Wed 6/17
Wed 6/24
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 May 18, 2026.

This Delta deal was found by Cheapflights users on 5/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:05 am
BOS
-
LIH
1 stop18h 17m
Delta
Tue 11/2410:45 pm
LIH
-
BOS
1 stop16h 38m
Delta
Deal found 5/17$528
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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.
Mon 9/217:40 am
BOS
-
LIH
1 stop34h 04m
Multiple Airlines
Mon 9/286:00 am
LIH
-
BOS
2 stops17h 49m
Multiple Airlines
Deal found 5/13$533
This Delta deal was found by Cheapflights users on 5/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:30 am
BOS
-
LIH
2 stops19h 33m
Delta
Tue 8/259:55 pm
LIH
-
BOS
2 stops18h 52m
Delta
Deal found 5/17$539
This United Airlines deal was found by Cheapflights users on 5/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:45 am
BOS
-
LIH
1 stop13h 55m
United Airlines
Mon 8/241:15 pm
LIH
-
BOS
1 stop12h 59m
United Airlines
Deal found 5/14$548
This Delta deal was found by Cheapflights users on 5/16. 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.
Mon 9/217:05 am
BOS
-
LIH
1 stop18h 15m
Delta
Tue 10/69:45 pm
LIH
-
BOS
1 stop12h 09m
Delta
Deal found 5/16$556
This Delta deal was found by Cheapflights users on 5/13. 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.
Mon 8/176:05 am
BOS
-
LIH
2 stops18h 58m
Delta
Tue 8/259:55 pm
LIH
-
BOS
2 stops18h 52m
Delta
Deal found 5/13$559
This Delta deal was found by Cheapflights users on 5/16. 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.
Fri 9/1811:00 am
BOS
-
LIH
1 stop14h 20m
Delta
Tue 10/69:45 pm
LIH
-
BOS
1 stop12h 09m
Delta
Deal found 5/16$561
This Delta deal was found by Cheapflights users on 5/16. 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.
Mon 9/217:05 am
BOS
-
LIH
1 stop18h 15m
Delta
Mon 10/59:45 pm
LIH
-
BOS
2 stops18h 41m
Delta
Deal found 5/16$562
This American Airlines deal was found by Cheapflights users on 5/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:10 am
BOS
-
LIH
1 stop14h 38m
American Airlines
Sat 12/122:54 pm
LIH
-
BOS
2 stops14h 35m
American Airlines
Deal found 5/13$567
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:54 pm
BOS
-
LIH
2 stops26h 46m
Multiple Airlines
Sun 11/811:13 am
LIH
-
BOS
2 stops13h 34m
Multiple Airlines
Deal found 5/18$572

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 May 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$528
(Delta)

One-way from

$264
(Alaska Airlines)

Popular in

December

Cheapest in

January

Average price

$715
Provider with most accurate pricing for Boston Logan Intl-Lihue flight deals.
Search Deals
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. 1% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 18, 2026.
Use the filters below to find and compare flights from Boston to Kaua'i that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 8/18

5:30 am-7:03 pm

2 stops19h 33m

Lihue

Tue 8/25

9:55 pm-10:47 pm

2 stops18h 52m

$539

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 11/2

5:54 pm-1:47 pm

1 stop24h 53m

Lihue

Sun 11/8

11:45 am-5:47 am

1 stop13h 02m

$561

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 10/25

5:40 am-5:20 pm

2 stops17h 40m

Lihue

Fri 10/30

9:45 pm-10:24 pm

2 stops18h 39m

$605

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 8/31

8:00 am-8:12 pm

2 stops18h 12m

Lihue

Fri 9/4

10:45 am-5:49 am

1 stop13h 04m

$627
Quickest round-trip

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 8/18

7:45 am-3:40 pm

1 stop13h 55m

Lihue

Tue 8/25

1:15 pm-7:54 am

1 stop12h 39m

$660

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 8/18

11:25 am-7:03 pm

1 stop13h 38m

Lihue

Wed 8/26

9:55 pm-10:47 pm

2 stops18h 52m

$662

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 10/8

7:05 am-7:22 pm

1 stop18h 17m

Lihue

Thu 10/22

9:45 pm-11:11 pm

2 stops19h 26m

$662

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Fri 9/4

6:00 am-7:20 pm

2 stops19h 20m

Lihue

Tue 9/8

9:26 pm-7:32 pm

2 stops16h 06m

$675

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 10/8

7:05 am-7:22 pm

1 stop18h 17m

Lihue

Fri 10/23

9:45 pm-3:54 pm

1 stop12h 09m

$689

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 8/31

8:00 am-8:12 pm

2 stops18h 12m

Lihue

Tue 9/1

6:00 am-6:09 am

2 stops18h 09m

$737

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

Showing 1-10 of 20 resultsSorted by cheapest first
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

How far ahead should I book a flight from Boston to Kaua'i?

The best time to book flights from Boston to Kaua'i is 39 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, April is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $286). Flying from Boston to Kaua'i in September is currently the most expensive (average of $573). 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 May 18, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andHawaiian 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
7.9
Good
12,378 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,378 reviews
Alaska Airlines
7.9
Good
12,378 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Delta
7.9
Good
8,447 reviews
Alaska Airlines
7.9
Good
12,378 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Hawaiian Airlines
7.8
Good
2,837 reviews
Alaska Airlines
7.9
Good
12,378 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
United Airlines
7.4
Good
9,736 reviews
Alaska Airlines
7.9
Good
12,378 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
American Airlines
7.1
Good
11,648 reviews
Alaska Airlines
7.9
Good
12,378 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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 19h 33m. Delta provides one of the quickest options available for as low as $539. 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 $261 on JetBlue. Other airlines that offer cheap prices include Delta from $264 and American Airlines from $286 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, April is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $286). Flying from Boston to Kaua'i in September is currently the most expensive (average of $573). 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 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 May 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$428Average$729FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$483Average$979FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$509Average$897FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$565Average$781FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$568Average$797FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$584Average$661FlexibilityNo cancel feeOn-time62%

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