$284 Find Cheap Flights from Boston to Kaua'i - Compare and Save

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 10/21. 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, 0 bags

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Book Cheap Boston to Kaua'i Plane Tickets

 
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, Oct 21 - Thu, Oct 29
Delta Logo
8:38 pm - 5:38 pm
BOS
-
LIH
27h 00m
1 stop
Delta Logo
8:39 pm - 8:30 pm
LIH
-
BOS
17h 51m
1 stop
$534Delta
Wed, Oct 21 - Fri, Oct 30
Delta Logo
8:38 pm - 5:38 pm
BOS
-
LIH
27h 00m
1 stop
Delta Logo
8:39 pm - 3:13 pm
LIH
-
BOS
12h 34m
1 stop
$550Delta
Thu, Oct 29 - Mon, Nov 9
Delta Logo
6:15 am - 5:38 pm
BOS
-
LIH
17h 23m
1 stop
Delta Logo
10:45 pm - 3:54 pm
LIH
-
BOS
12h 09m
1 stop
$552Delta
Thu, Oct 22 - Mon, Nov 2
Delta Logo
6:00 am - 7:14 pm
BOS
-
LIH
19h 14m
2 stops
Delta Logo
8:39 pm - 5:27 am
LIH
-
BOS
27h 48m
1 stop
$556Delta
Thu, Oct 29 - Mon, Nov 9
Delta Logo
6:15 am - 5:38 pm
BOS
-
LIH
17h 23m
1 stop
Delta Logo
10:45 pm - 6:27 pm
LIH
-
BOS
14h 42m
2 stops
$557Delta
Sun, Nov 8 - Mon, Nov 16
Delta Logo
6:05 am - 8:14 pm
BOS
-
LIH
19h 09m
2 stops
Delta Logo
10:45 pm - 11:51 pm
LIH
-
BOS
20h 06m
2 stops
$561Delta
Wed, Oct 28 - Fri, Oct 30
Delta Logo
6:15 am - 5:38 pm
BOS
-
LIH
17h 23m
1 stop
Delta Logo
8:39 pm - 5:27 am
LIH
-
BOS
26h 48m
1 stop
$564Delta
Sun, Oct 25 - Fri, Oct 30
Delta Logo
10:50 am - 7:14 pm
BOS
-
LIH
14h 24m
1 stop
Delta Logo
8:39 pm - 3:13 pm
LIH
-
BOS
12h 34m
1 stop
$568Delta
Thu, Aug 27 - Sun, Aug 30
Delta Logo
6:25 am - 5:41 pm
BOS
-
LIH
17h 16m
1 stop
Delta Logo
9:55 pm - 11:05 pm
LIH
-
BOS
19h 10m
2 stops
$572Delta
Mon, Dec 7 - Mon, Dec 14
Multiple Airlines Logo
5:45 pm - 2:06 pm
BOS
-
LIH
25h 21m
1 stop
Multiple Airlines Logo
9:43 am - 8:02 am
LIH
-
BOS
17h 19m
2 stops
$573Multiple Airlines
Booking Insights

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 $506, 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 August, when tickets cost $264 (return) on average. On the other hand, the most expensive months are July and September, when the average cost of round-trip tickets is $653 and $587 respectively.

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 14 weeks before departure.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$284
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 14% lower on average.
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.

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

Information on your arrival and departure airports

Boston (BOS)