In terms of precipitation, rainfall in Honolulu ranges from 0.3 - 3.2 inches per month. December is typically the wettest month, when rainfall can reach 3.2 in. June is typically the driest time to visit Honolulu when rainfall is around 0.3 in.

If weather is an important factor for your trip to Honolulu, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 73.4 F).

How far in advance should I book a flight from Islip to Honolulu?

Find a great deal and save up to 16% by booking at least 36 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Islip to Honolulu within the next two weeks, with the cheapest ticket starting at $697.

What is the cheapest month to fly from Islip to Honolulu?

The best pricing can be found in the month of January. Prices to Honolulu from Islip average $842. You can even find prices in January for less than $842, as users have found deals to Honolulu from as low as $417. The month of December appears to be one of the more expensive times to travel to Honolulu from Islip. Flying in the targeted month can save you up to 33%.

What is the cheapest time of day to fly from ISP to HNL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Islip to Honolulu as you normally would.

Can I find deals for flights from Islip to Honolulu that include hotel bookings?

Yes. In addition to deals on Islip to Honolulu flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Islip to Honolulu?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Honolulu.

Can I find deals for business class flights from Islip to Honolulu?

Yes. Cheapflights offers flight deals from Islip to Honolulu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$921+ Flights from Islip to Honolulu

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Cheap flight deals from Islip to Honolulu

Round-trip from	$921 (Kiwi.com)
Popular in	December
Cheapest in	January
Average price	$920

From Islip Long Island to Honolulu

Search Deals

Highest demand for flights based on searches. 2% potential increase in price ($18 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

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Find flight deals from Islip to Honolulu

Cheapest flights from Islip to Honolulu
Explore the most affordable flight options available from Islip to Honolulu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Wed 9/104:33 pmISP - HNL

1 stop26h 37mMultiple Airlines

Wed 9/173:36 pmHNL - ISP

2 stops37h 04mMultiple Airlines

Deal found 8/19

$921

Mon 8/254:33 pmISP - HNL

1 stop26h 37mMultiple Airlines

Mon 9/11:40 pmHNL - ISP

2 stops52h 01mMultiple Airlines

Deal found 8/18

$1,134

Wed 9/34:33 pmISP - HNL

1 stop26h 37mMultiple Airlines

Sun 9/71:40 pmHNL - ISP

2 stops39h 00mMultiple Airlines

Deal found 8/19

$1,236

Best flights from Islip to Honolulu
Discover carefully curated flight deals from Islip to Honolulu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2025.

Wed 9/104:33 pmISP - HNL

1 stop26h 37mMultiple Airlines

Wed 9/173:36 pmHNL - ISP

2 stops37h 04mMultiple Airlines

Deal found 8/19

$921

Wed 9/34:33 pmISP - HNL

1 stop26h 37mMultiple Airlines

Sun 9/71:40 pmHNL - ISP

2 stops39h 00mMultiple Airlines

Deal found 8/19

$1,236

Last-minute flights from Islip to Honolulu
Discover last-minute flight deals from Islip to Honolulu. Data last updated August 20, 2025 and is based on user searches.

Mon 8/254:33 pmISP - HNL

1 stop26h 37mMultiple Airlines

Mon 9/11:40 pmHNL - ISP

2 stops52h 01mMultiple Airlines

Deal found 8/18

$1,134

Wed 9/34:33 pmISP - HNL

1 stop26h 37mMultiple Airlines

Sun 9/71:40 pmHNL - ISP

2 stops39h 00mMultiple Airlines

Deal found 8/19

$1,236

Wed 9/104:33 pmISP - HNL

1 stop26h 37mMultiple Airlines

Wed 9/173:36 pmHNL - ISP

2 stops37h 04mMultiple Airlines

Deal found 8/19

$921

Fly from

Fly to

Route

Depart

Return

Price

IslipHonolulu

ISP - HNL

ISPHNL

Islip Long Island

Wed 9/10

4:33 pm-1:10 pm

1 stop26h 37m

Honolulu

Wed 9/17

3:36 pm-10:40 am

2 stops37h 04m

$921

IslipHonolulu

ISP - HNL

ISPHNL

Islip Long Island

Wed 9/3

4:33 pm-1:10 pm

1 stop26h 37m

Honolulu

Sun 9/7

1:40 pm-10:40 am

2 stops39h 00m

$1,236

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Best time to book a flight from Islip to Honolulu

Have a flexible travel schedule? Discover the best time to fly to Honolulu 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 Honolulu

What is the cheapest month to book a flight from Islip to Honolulu?

Currently, November is the cheapest month in which you can book a flight from Islip to Honolulu (average of $469). Flying from Islip to Honolulu in June is currently the most expensive (average of $687). 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.

Related info for your journey

Can I find deals for flights from Islip to Honolulu that include hotel bookings?
Yes. In addition to deals on Islip to Honolulu flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Honolulu?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Honolulu.
Can I find deals for business class flights from Islip to Honolulu?
Yes. Cheapflights offers flight deals from Islip to Honolulu 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 Islip to Honolulu?
Currently, November is the cheapest month in which you can book a flight from Islip to Honolulu (average of $469). Flying from Islip to Honolulu in June is currently the most expensive (average of $687). 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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$921+ Cheap flights from Islip to Honolulu (ISP - HNL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Honolulu with Cheapflights

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Cheap flight deals from Islip to Honolulu

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Find flight deals from Islip to Honolulu

Cheapest flights from Islip to HonoluluExplore the most affordable flight options available from Islip to Honolulu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Explore the most affordable flight options available from Islip to Honolulu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Honolulu that are best for you.

Best time to book a flight from Islip to Honolulu

Have a flexible travel schedule? Discover the best time to fly to Honolulu from Islip with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Islip to Honolulu

What is the cheapest month to book a flight from Islip to Honolulu?

Related info for your journey

Find useful and relevant information for your journey from Islip to Honolulu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Islip to Honolulu that include hotel bookings?

How can I find direct flights from Islip to Honolulu?

Can I find deals for business class flights from Islip to Honolulu?

What is the cheapest month to book a flight from Islip to Honolulu?

Traveling to a place near Honolulu?

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Alternative routes for Islip to Honolulu

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Cheapest flights from Islip to Honolulu
Explore the most affordable flight options available from Islip to Honolulu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.