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Kaua'i

$316+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIH
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
1 adult, Economy
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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 June 16, 2025.

Round-trip from

$558
(Alaska Airlines)

One-way from

$316
(Delta)

Popular in

December

Cheapest in

November

Average price

$950
From Boston Logan Intl to Kaua'i
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One-way flight from Boston Logan Intl to Kaua'i
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 16, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:59 pmBOS - LIH
2 stops22h 55mAlaska Airlines
Wed 11/124:00 pmLIH - BOS
2 stops18h 41mAlaska Airlines
Deal found 6/15$558
This Delta deal was found by Cheapflights users on 6/15. 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.
Wed 11/56:30 amBOS - LIH
1 stop16h 53mDelta
Wed 11/1210:45 pmLIH - BOS
1 stop12h 09mDelta
Deal found 6/15$570
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:15 amBOS - LIH
1 stop14h 12mAmerican Airlines
Fri 9/129:45 pmLIH - BOS
1 stop13h 01mAmerican Airlines
Deal found 6/14$573
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Tue 6/1710:30 amBOS - LIH
2 stops15h 25mUnited Airlines
Sat 6/2112:55 pmLIH - BOS
1 stop12h 33mUnited Airlines
Deal found 6/15$772
This Southwest deal was found by Cheapflights users on 6/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:00 pmBOS - LIH
2 stops22h 15mSouthwest
Thu 1/19:10 pmLIH - BOS
2 stops16h 05mSouthwest
Deal found 6/16$1,494
This American Airlines deal was found by Cheapflights users on 6/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:15 amBOS - LIH
2 stops18h 15mMultiple Airlines
Sun 9/219:45 pmLIH - BOS
1 stop13h 01mMultiple Airlines
Deal found 6/16$2,264

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 June 16, 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

Sun 9/7

6:15 am-2:27 pm

1 stop14h 12m

Lihue

Fri 9/12

9:45 pm-4:46 pm

1 stop13h 01m

$573

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 9/14

7:20 am-9:30 pm

1 stop20h 10m

Lihue

Tue 9/23

1:29 pm-3:00 pm

2 stops19h 31m

$574

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 6/26

7:25 am-7:10 pm

1 stop17h 45m

Lihue

Thu 7/3

9:40 pm-4:27 pm

1 stop12h 47m

$707

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 9/1

8:25 am-7:58 pm

2 stops17h 33m

Lihue

Sat 9/6

11:10 pm-5:59 am

3 stops24h 49m

$938

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 9/14

6:15 am-6:30 pm

2 stops18h 15m

Lihue

Sun 9/21

9:45 pm-4:46 pm

1 stop13h 01m

$2,264

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 7/22

7:25 am-7:08 pm

1 stop17h 43m

$316

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 8/6

5:45 pm-8:32 pm

1 stop32h 47m

$343

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sat 8/16

9:03 am-8:25 pm

2 stops17h 22m

$362

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Sun 8/10

9:20 pm-12:50 pm

2 stops21h 30m

$438

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Wed 8/6

8:40 am-10:12 pm

2 stops19h 32m

$441

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Showing 1-10 of 11 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, January is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $440). Flying from Boston to Kaua'i in June is currently the most expensive (average of $689). 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 June 16, 2025.

When flying from Boston to Kaua'i, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kaua'i ranges from 2.2 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. June is typically the driest time to visit Kaua'i when rainfall is around 2.2 in.

Temperature in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kaua'i, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

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 June 16, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,501 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,801 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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 $316 on Delta. Other airlines that offer cheap prices include Alaska Airlines from $343 and United Airlines from $362 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, January is the cheapest month in which you can book a flight from Boston to Kaua'i (average of $440). Flying from Boston to Kaua'i in June is currently the most expensive (average of $689). 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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$294Average$640FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$314Average$550FlexibilityNo cancel feeOn-time62%
DeltaCheapest$349Average$723FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$417Average$676FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$444Average$626FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$448Average$822FlexibilityNo cancel feeOn-time69%

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