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Kaua'i

$284+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIH
Aug 8 — Aug 151
Sat 8/8
Sat 8/15
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 July 9, 2026.

This Delta deal was found by Cheapflights users on 7/4. 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 8/276:25 am
BOS
-
LIH
1 stop17h 16m
Delta
Thu 9/109:54 pm
LIH
-
BOS
2 stops19h 57m
Delta
Deal found 7/4$537
This Delta deal was found by Cheapflights users on 7/5. 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 11/87:50 am
BOS
-
LIH
1 stop17h 24m
Delta
Mon 11/1610:45 pm
LIH
-
BOS
2 stops20h 06m
Delta
Deal found 7/5$556
This United Airlines deal was found by Cheapflights users on 7/5. 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 11/127:40 am
BOS
-
LIH
1 stop14h 15m
United Airlines
Thu 11/1211:59 pm
LIH
-
BOS
1 stop14h 20m
United Airlines
Deal found 7/5$563
This Delta deal was found by Cheapflights users on 7/6. 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 11/1710:50 am
BOS
-
LIH
1 stop14h 32m
Delta
Tue 11/2410:45 pm
LIH
-
BOS
1 stop16h 38m
Delta
Deal found 7/6$567
This Delta deal was found by Cheapflights users on 7/8. 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 10/2510:50 am
BOS
-
LIH
1 stop14h 24m
Delta
Fri 10/308:39 pm
LIH
-
BOS
1 stop12h 34m
Delta
Deal found 7/8$568
This Alaska Airlines deal was found by Cheapflights users on 7/6. 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.
Sat 9/198:00 am
BOS
-
LIH
1 stop33h 36m
Multiple Airlines
Sun 9/276:00 am
LIH
-
BOS
2 stops17h 47m
Multiple Airlines
Deal found 7/6$573
This Delta deal was found by Cheapflights users on 7/7. 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 10/207:50 am
BOS
-
LIH
1 stop17h 24m
Delta
Tue 10/278:39 pm
LIH
-
BOS
1 stop21h 15m
Delta
Deal found 7/7$576
This Delta deal was found by Cheapflights users on 7/8. 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 9/285:55 am
BOS
-
LIH
2 stops17h 45m
Delta
Mon 10/59:54 pm
LIH
-
BOS
2 stops19h 01m
Delta
Deal found 7/8$579
This Delta deal was found by Cheapflights users on 7/7. 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 10/199:10 am
BOS
-
LIH
2 stops16h 04m
Delta
Tue 10/278:39 pm
LIH
-
BOS
1 stop21h 15m
Delta
Deal found 7/7$581
This Delta deal was found by Cheapflights users on 7/8. 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 8/1411:20 am
BOS
-
LIH
1 stop13h 56m
Delta
Tue 8/189:55 pm
LIH
-
BOS
2 stops19h 10m
Delta
Deal found 7/8$595

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 July 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$537
(Delta)

One-way from

$284
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$929
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. 2% potential increase in price ($21 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 July 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 July 9, 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 11/17

10:50 am-8:22 pm

1 stop14h 32m

Lihue

Tue 11/24

10:45 pm-8:23 pm

1 stop16h 38m

$568
Quickest round-trip

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 8/26

7:45 am-3:40 pm

1 stop13h 55m

Lihue

Mon 8/31

7:35 pm-1:47 pm

1 stop12h 12m

$568

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sat 10/24

7:50 am-7:14 pm

1 stop17h 24m

Lihue

Sun 11/1

9:50 pm-7:41 pm

1 stop16h 51m

$568

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 10/25

10:50 am-7:14 pm

1 stop14h 24m

Lihue

Fri 10/30

8:39 pm-3:13 pm

1 stop12h 34m

$568

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 10/20

7:50 am-7:14 pm

1 stop17h 24m

Lihue

Tue 10/27

8:39 pm-11:54 pm

1 stop21h 15m

$576

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 10/22

6:00 am-5:38 pm

2 stops17h 38m

Lihue

Tue 10/27

8:39 pm-7:21 pm

2 stops16h 42m

$579

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 8/18

7:45 am-7:16 pm

1 stop17h 31m

Lihue

Tue 8/25

8:41 pm-7:35 pm

2 stops16h 54m

$602

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sat 10/24

6:00 am-7:14 pm

2 stops19h 14m

Lihue

Thu 10/29

9:50 pm-10:26 pm

2 stops18h 36m

$607

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 11/17

7:02 am-1:47 pm

1 stop35h 45m

Lihue

Tue 11/24

7:12 am-7:31 am

2 stops19h 19m

$608
Cheapest one-way

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 10/20

7:50 am-7:14 pm

1 stop17h 24m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/5

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

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

Currently, August is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $264). Flying from Boston to Kaua'i in July is currently the most expensive (average of $654). 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.

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 74 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.

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 July 9, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited 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
12,641 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Food

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,641 reviews
Alaska Airlines
7.9
Good
12,641 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Food

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Delta
7.8
Good
8,450 reviews
Alaska Airlines
7.9
Good
12,641 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Food

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
United Airlines
7.4
Good
9,953 reviews
Alaska Airlines
7.9
Good
12,641 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Food

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
American Airlines
7.1
Good
11,790 reviews
Alaska Airlines
7.9
Good
12,641 reviews

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Food

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

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 14h 32m. Delta provides one of the quickest options available for as low as $568. 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 $264 on Delta. Other airlines that offer cheap prices include United Airlines from $283 and JetBlue from $284 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, August is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $264). Flying from Boston to Kaua'i in July is currently the most expensive (average of $654). 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 4 airlines flying from Boston to Kaua'i

Discover the top 4 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 July 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$274Average$709FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$417Average$746FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$489Average$801FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$513Average$886FlexibilityNo cancel feeOn-time71%

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