$249 Find Cheap Flights from Boston to Kaua'i

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Kaua'i departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Kaua'i

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Kaua'i.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Kaua'i.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Best Kaua'i Flight Deals from Boston

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lihue
Lihue1 stop$480
Lihue
Lihue1 stop$480

Cheap Flights from Boston to Kaua'i

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Kaua'i that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Kaua'i

Wed, Nov 5 - Tue, Nov 18
Delta Logo
6:30 am - 6:23 pmBOS-LIH
16h 53m1 stop
Delta Logo
10:26 pm - 5:58 amLIH-BOS
26h 32m1 stop
$480Delta
Find Deal
Tue, Nov 4 - Tue, Nov 18
Alaska Airlines Logo
6:59 pm - 10:46 amBOS-LIH
20h 47m1 stop
Alaska Airlines Logo
7:59 pm - 3:41 pmLIH-BOS
14h 42m2 stops
$481Alaska Airlines
Find Deal
Tue, Oct 14 - Wed, Oct 22
Alaska Airlines Logo
8:25 pm - 9:47 amBOS-LIH
19h 22m1 stop
Alaska Airlines Logo
2:20 pm - 4:00 pmLIH-BOS
19h 40m1 stop
$487Alaska Airlines
Find Deal
Tue, Nov 4 - Tue, Nov 18
Delta Logo
10:55 am - 6:23 pmBOS-LIH
36h 28m1 stop
Delta Logo
10:26 pm - 11:59 pmLIH-BOS
20h 33m1 stop
$490Delta
Find Deal
Tue, Oct 14 - Mon, Oct 20
Alaska Airlines Logo
8:25 pm - 9:47 amBOS-LIH
19h 22m1 stop
Alaska Airlines Logo
2:20 pm - 4:00 pmLIH-BOS
19h 40m1 stop
$491Alaska Airlines
Find Deal
Tue, Nov 4 - Mon, Nov 17
Alaska Airlines Logo
6:59 pm - 10:46 amBOS-LIH
20h 47m1 stop
Alaska Airlines Logo
7:10 pm - 3:41 pmLIH-BOS
15h 31m2 stops
$496Alaska Airlines
Find Deal
Wed, Nov 5 - Mon, Nov 17
Delta Logo
6:30 am - 6:23 pmBOS-LIH
16h 53m1 stop
Delta Logo
10:26 pm - 5:58 amLIH-BOS
26h 32m1 stop
$499Delta
Find Deal
Wed, Nov 5 - Sun, Nov 16
Delta Logo
6:30 am - 6:23 pmBOS-LIH
16h 53m1 stop
Delta Logo
10:26 pm - 5:58 amLIH-BOS
26h 32m1 stop
$509Delta
Find Deal
Sat, Nov 1 - Tue, Nov 18
Delta Logo
10:55 am - 6:23 pmBOS-LIH
37h 28m1 stop
Delta Logo
10:26 pm - 5:58 amLIH-BOS
26h 32m1 stop
$510Delta
Find Deal
Sun, Sep 7 - Fri, Sep 12
American Airlines Logo
6:15 am - 2:27 pmBOS-LIH
14h 12m1 stop
American Airlines Logo
1:44 pm - 10:38 amLIH-BOS
14h 54m2 stops
$578American Airlines
Find Deal
Useful Info

KAYAK's insights & trends for Boston to Kaua'i flights

Get data-powered insights and trends into flights from Boston to Kaua'i to help you find the cheapest flights, the best time to fly and much more.

Can I save money by flying with a layover from Boston to Kaua'i?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $1,118, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Boston to Kaua'i?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Kaua'i, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Kaua'i is September, when tickets cost $572 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $992 and $956 respectively.

What’s the cheapest day of the week to fly from Boston to Kaua'i?

The average price of all round-trip flights from Boston to Kaua'i clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Kaua'i on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Boston to Kaua'i. For your return ticket, we recommend flying on a Saturday and avoiding Sundays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Kaua'i, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Kaua'i, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 2 weeks before departure.


Good to know

Low seasonJuly
High seasonDecember
Cheapest flight$249
Best time to beat the crowds but there is an average 30% increase in price.
Most popular time to fly with an average 35% increase in price.
Flight from Boston to Lihue

FAQs - booking Kaua'i flights

  • How does KAYAK find such low prices on flights from Boston to Kaua'i?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Kaua'i.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Kaua'i?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston to Kaua'i is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Kaua'i?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boston to Kaua'i with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Kaua'i?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boston to Kaua'i up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Kaua'i?

    The cheapest time of day to fly to Kaua'i is generally at night, when round-trip flights cost $511 on average. Morning departures are around 12% cheaper than evening flights, on average. The most expensive time of day to fly to Kaua'i is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $872.

Reviews of the top 5 airlines serving from Boston to Kaua'i

 
See real verified KAYAK customer reviews for airlines flying from Boston to Kaua'i. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Kaua'i? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
8.5Crew
8.1Boarding
7.1Food
7.8Comfort
7.1Entertainment
Airline reviews

Wonderful respectful staff for a short flight late at night...lots of considerations all met!

10.0 ExcellentAnonymous, Jun 2025ITO - HNL
Read more Alaska Airlines reviews

Wonderful respectful staff for a short flight late at night...lots of considerations all met!

Flight was delayed which led to missed connection, but rebooked on a more direct flight at the last minute and arrived in Juneau on time with all our luggage. Little stressful and our family seating got split, but it all worked out in the end.

Only issue was the 2 hr delay after an 8 hr layover. Very long day.

Very bad, terrible food and late by 2 hours. Then no to open aircraft doors

Flying on Hawaiian Airlines was good. But, getting a boarding pass was a hassle. I booked what I thought was an Alaska Airlines flight that was actually a Hawaiian Airlines flight. I couldn't check in online. I had to wait for the Hawaiian Airlines counter to open so I could get my boarding pass which was a requirement for me to get in The Club or the Centurion Lounge. (I had no check in luggage so I didn't expect to have to physically check in.) The Alaska Airlines staff blamed the FAA for the problem.

Terrible check in experience, and they ended up losing our bag.

they didn't fix a plane and we were delayed travelling an extra 12 hours.

This flight was how a flight should be. The flight from Hawaii to Seattle was terrible

Kayak and Alaska have our trusted traveller information stored in our profiles. But, that information never made it to Alaska when it came time to check into our outbound flight. As a result, we were not cleared for TSA recheck. I was able to add in that information for our return flight and we had TSA Recheck on the return. I really expected Kayak and Alaska to do a complete job with our booking given the amount of information you have on file.

Our big luggage never made it to Boston. Very crucial to get it ASAP as heart medication is in there.

Very late arrival at PWM. Late jet getting to ATL. Equipment problem with aircraft - could not get enough water onto plane., Another delay getting FAA approval for flight with bottled H2O. Not the crew’s problem.

Everything was fine except the entertainment was not working for half of the flight.

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

At first, we were on the runway for about an hour, literally. The Captain did explain that the Control Tower just had a change shift (sounds like an unrealistic excuse) and then that we had to change a runway. A regular economy seat is made for 12 yo twiggy. I understand Delta wants to push for an upgrade, but after sitting in a Comfort seat and in First class. I would say First class is not worthy of my money. The landing was delayed because of the weather in NYC, I don't hold that against Delta, of course. The Captain did alert us to that upon takeoff in Vegas and again as we reached NY.

No one fussed at me about my pap machine as a 3rd pice on the plane. Boarding was pleasant and smooth. The boarding agent in Anchorage was a fun character- he could be in a movie. :~) The on-board crew were downright pleasant. No militant attitudes on Delta. Like all planes these days the seats are too narrow for standard Americans and at 5’2” there is barely enough leg room. I don’t know how tall people fold themselves into the seats. But that’s nothing specific to Delta

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

After all the weather issues at least they got me to my destination the next day

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

Overall it was a good flight, but the food should be looked at. No options. The seat was also uncomfortable and very tight.

It’s great, I’ve always fly & ride with Hawaiian Airlines going Inter island or to the mainland.

Nothing. Fare didn’t allow seat allocations. So we were stuck in the middle . Not good for 77 to 80 year olds. I was stick on plane. Taken off the plane before take off and ground staff told me to google where a hospital was to get a clearance to travel again. Left on own at airport ti fend for our selves. Also was charged for baggage, also I was not aware. I think booking through a third party, such as yourselves, doesn’t allow any for considerations when allocating seats.

Check in process was a mess. Long lines, equipment malfuctioning. One line for baggage tags then a second line for bag checkin.

It was very pleasant. The staff and crew are very polite.

Hawaiian Airlines staff is always professional & quick & easy check in & boarding process

Customer service by Susan of Alaskan Air was outstanding. We missed our flight out of JFK. She got us rebooked the following day. Way to go Susan.

Bar code for checking luggage and boarding pass didn't work. Had to stand in long customer service line. Passengers at Oahu should be aware the Terminal for Hawaiian Air requires travel by shuttle. Budget an extra 20-30 minutes to get from the main terminal to the remote terminal.

Checking baggage at Honolulu was a real mess. No signs directing where to go.

We boarded an hour and a half late because a coffee maker leaked in the plane. Then we had to wait for awhile to get off the plane because another plane was in our spot at the terminal. I had plans when I landed that I had to skip so it was pretty disappointing.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Overall it was good. I missed my connection but I was put on another flight.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

The woman gate agent in Phoenix was none too sympathetic about my check-in process as I am relatively new with using apps. I almost did not get on because she said I did not check-in. I thought I had via Kayak where I purchased a very expensive ticket. Lesson learned but to be told I may not get on as a matter of factly was difficult to hear.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Boarded plane and then delayed 1.5 hours while on the plane

Survey sent before we actually left. Delay after delay. Now a crew problem.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

This flight never occurred because AA couldn’t get their act together.

Everything you need to know for your flight to Kaua'i

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.