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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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIH
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
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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 November 5, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:52 pmBOS - LIH
1 stop21h 01mAlaska Airlines
Thu 12/117:59 pmLIH - BOS
2 stops14h 38mAlaska Airlines
Deal found 11/4$500
This Delta deal was found by Cheapflights users on 11/4. 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.
Tue 12/25:45 amBOS - LIH
2 stops17h 48mDelta
Sat 12/610:55 pmLIH - BOS
1 stop12h 28mDelta
Deal found 11/4$589
This Expedia deal was found by Cheapflights users on 11/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:00 amBOS - LIH
2 stops18h 29mJetBlue
Sat 12/612:59 pmLIH - BOS
2 stops20h 27mJetBlue
Deal found 11/4$598
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:59 pmBOS - LIH
1 stop32h 26mAlaska Airlines
Sat 12/61:09 pmLIH - BOS
1 stop21h 28mAlaska Airlines
Deal found 11/4$601
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:00 amBOS - LIH
1 stop13h 17mAlaska Airlines
Wed 12/104:51 pmLIH - BOS
1 stop17h 46mAlaska Airlines
Deal found 11/4$603
This American Airlines deal was found by Cheapflights users on 11/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:05 amBOS - LIH
1 stop14h 49mAmerican Airlines
Sat 12/62:54 pmLIH - BOS
2 stops15h 36mAmerican Airlines
Deal found 11/4$616
This Delta deal was found by Cheapflights users on 11/3. 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 12/25:45 amBOS - LIH
2 stops19h 25mDelta
Tue 12/99:50 pmLIH - BOS
1 stop13h 13mDelta
Deal found 11/3$623

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 November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$444
(Alaska Airlines)

One-way from

$222
(Alaska Airlines)

Popular in

December

Cheapest in

November

Average price

$616
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.
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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. 3% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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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 November 5, 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 2/3

4:20 pm-1:03 pm

1 stop25h 43m

Lihue

Tue 2/10

10:25 am-5:39 pm

1 stop26h 14m

$444

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 1/20

4:20 pm-1:03 pm

1 stop25h 43m

Lihue

Thu 1/29

1:39 pm-5:39 pm

2 stops23h 00m

$473

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 12/4

6:52 pm-10:53 am

1 stop21h 01m

Lihue

Thu 12/11

2:53 pm-5:52 pm

1 stop21h 59m

$500

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 1/21

4:20 pm-10:46 am

2 stops23h 26m

Lihue

Sun 1/25

2:50 pm-5:39 pm

2 stops21h 49m

$510

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

$565

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Fri 1/9

4:20 pm-11:10 am

2 stops23h 50m

Lihue

Sat 1/17

1:39 pm-5:39 pm

2 stops23h 00m

$570

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 1/21

7:30 am-6:31 pm

1 stop16h 01m

Lihue

Sun 1/25

10:45 pm-4:09 pm

1 stop12h 24m

$573

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 12/9

6:52 pm-10:53 am

1 stop21h 01m

$222

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 1/14

6:00 am-10:23 pm

3 stops21h 23m

$242

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 1/14

7:30 am-6:21 pm

1 stop15h 51m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 15 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, November is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $307). 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.

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 November 5, 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 November 5, 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
11,242 reviews

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,242 reviews
Alaska Airlines
8.0
Very good
11,242 reviews

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
8,004 reviews
Alaska Airlines
8.0
Very good
11,242 reviews

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,804 reviews
Alaska Airlines
8.0
Very good
11,242 reviews

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
9,002 reviews
Alaska Airlines
8.0
Very good
11,242 reviews

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,042 reviews
Alaska Airlines
8.0
Very good
11,242 reviews

Crew

8.5

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 $444. The distance from Boston to Kaua'i is about 5124 mi.

  • 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, November is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $307). 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

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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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$351Average$715FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$427Average$832FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$442Average$677FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$444Average$623FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$548Average$550FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$565Average$923FlexibilityNo cancel feeOn-time69%

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