HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kaua'i

$260+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIH
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Kaua'i with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$479
(Delta)

One-way from

$260
(Alaska Airlines)

Popular in

July

Cheapest in

November

Average price

$640
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. 21% potential increase in price ($198 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 May 1, 2025.

This Delta deal was found by Cheapflights users on 4/29. 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 10/217:00 amBOS - LIH
2 stops16h 23mDelta
Tue 10/289:45 pmLIH - BOS
1 stop12h 09mDelta
Deal found 4/29$479
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/76:45 amBOS - LIH
1 stop14h 10mAmerican Airlines
Sun 5/119:40 pmLIH - BOS
1 stop12h 50mAmerican Airlines
Deal found 4/29$513
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 5/35:20 pmBOS - LIH
2 stops27h 53mAlaska Airlines
Fri 5/96:00 amLIH - BOS
1 stop19h 50mAlaska Airlines
Deal found 4/30$521
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:55 amBOS - LIH
1 stop14h 35mHawaiian Airlines
Mon 10/271:35 pmLIH - BOS
1 stop11h 20mHawaiian Airlines
Deal found 4/30$548
This United Airlines deal was found by Cheapflights users on 4/29. 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 8/1210:32 amBOS - LIH
1 stop15h 06mUnited Airlines
Wed 8/201:13 pmLIH - BOS
2 stops14h 43mUnited Airlines
Deal found 4/29$618
This Southwest deal was found by Cheapflights users on 4/29. 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.
Wed 5/75:00 amBOS - LIH
2 stops17h 00mSouthwest
Sun 5/119:00 amLIH - BOS
2 stops18h 50mSouthwest
Deal found 4/29$724

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 1, 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 10/21

7:00 am-5:23 pm

2 stops16h 23m

Lihue

Tue 10/28

9:45 pm-3:54 pm

1 stop12h 09m

$479

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 10/20

8:42 pm-12:10 pm

1 stop21h 28m

Lihue

Tue 10/28

1:41 pm-10:52 am

2 stops15h 11m

$537

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 10/20

8:55 am-5:30 pm

1 stop14h 35m

Lihue

Tue 10/28

9:00 pm-6:55 am

1 stop27h 55m

$548

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 8/12

10:32 am-7:38 pm

1 stop15h 06m

Lihue

Wed 8/20

1:13 pm-9:56 am

2 stops14h 43m

$618

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Thu 6/12

8:00 am-5:00 pm

1 stop15h 00m

Lihue

Sun 6/22

7:40 am-6:00 am

1 stop16h 20m

$669

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 5/5

8:00 am-5:46 pm

1 stop15h 46m

$260

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 5/5

5:35 am-2:55 pm

2 stops15h 20m

$270

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 7/22

7:25 am-7:08 pm

1 stop17h 43m

$287

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Mon 10/20

9:35 pm-12:50 pm

2 stops21h 15m

$346

BostonLihue

BOS - LIH

BOSLIH

Boston Logan Intl

Tue 7/22

7:30 am-7:38 pm

2 stops18h 08m

$362

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 $678). 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 May 1, 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 May 1, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Boston to Kaua'i have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
4,293 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

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 $260 on Alaska Airlines. Other airlines that offer cheap prices include American Airlines from $270 and Delta from $287 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 $678). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$287Average$640FlexibilityNo cancel feeOn-time85%
JetBlueCheapest$314Average$550FlexibilityNo cancel feeOn-time62%
DeltaCheapest$351Average$742FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$417Average$723FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$444Average$624FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$448Average$815FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Privacy Preferences©2025 Cheapflights