$413+ Cheap flights from Islip (ISP) to The Big Island
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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — KOA
Nov 9 — Nov 161
1 adult, Economy
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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 Islip to The Big Island
Keep the following information in mind while searching for Islip to The Big Island flight deals. Data was last updated October 10, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,514 (United) |
One-way from | $413 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $638 |
Find flight deals from Islip to The Big Island
Best flights from Islip to The Big IslandDiscover carefully curated flight deals from Islip to The Big Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2025.
Discover carefully curated flight deals from Islip to The Big Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2025.
This United deal was found by Cheapflights users on 10/7. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1112:40 pmISP - KOA
2 stops29h 28mMultiple Airlines
Wed 2/252:23 pmKOA - ISP
2 stops20h 52mMultiple Airlines
Deal found 10/7![Multiple Airlines logo]()
$1,514
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to The Big Island 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 October 10, 2025.
Use the filters below to find and compare flights from Islip to The Big Island that are best for you.
Fly from
Islip
Fly to
The Big Island
Route
Depart
Return
Price
IslipKailua-Kona
ISP - KOA
ISPKOA
Islip Long Island
Wed 2/11
12:40 pm-1:08 pm
2 stops29h 28m
Kona Intl
Wed 2/25
2:23 pm-4:15 pm
2 stops20h 52m
$1,514
IslipKailua-Kona
ISP - KOA
ISPKOA
Islip Long Island
Thu 10/23
9:37 pm-7:18 am
3 stops39h 41m
$413
Best time to book a flight from Islip to The Big Island
Have a flexible travel schedule? Discover the best time to fly to The Big Island from Islip 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 Islip to The Big Island
What is the cheapest month to book a flight from Islip to The Big Island?
Currently, January is the cheapest month in which you can book a flight from Islip to The Big Island (average of $209). Flying from Islip to The Big Island in July is currently the most expensive (average of $469). 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.