In terms of precipitation, rainfall in Japan ranges from 2.0 - 8.3 inches per month. September is typically the wettest month, when rainfall can reach 8.3 in. January is typically the driest time to visit Japan when rainfall is around 2.0 in.

If weather is an important factor for your trip to Japan, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

How far in advance should I book a flight from Islip, New York to Japan?

To save up to 2% on this flight, we recommend booking at least 31 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Islip, New York to Japan from $1,098 1-2 weeks out and tickets from $1,345 for flights departing within the next 72 hours.

What is the cheapest month to fly from Islip, New York to Japan?

Our data shows that September tends to be the cheapest month to fly to Japan from Islip, New York. Users have commonly found prices around $1,218 for the month, but tickets can be as low as $672. Due to multiple factors, prepare for potentially higher prices in December.

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

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

What airport do you fly from for flights from Islip to Japan?

Located just 7.2 mi from the city center, Islip Long Island (ISP) is the airport most travelers will use when flying to Japan from Islip.

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

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

How can I find direct flights from Islip to Japan?

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

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

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

$2,347+ Flights from Islip, NY to Japan

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Cheap flight deals from Islip to Japan

Round-trip from	$1,441 (Trip.com)
Popular in	December
Cheapest in	September
Average price	$1,309

From Islip Long Island to Japan

Search Deals

Highest demand for flights based on searches. 0% potential increase in price ($8 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Islip to Japan

Cheapest flights from Islip to Japan
Explore the most affordable flight options available from Islip to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Fri 8/152:05 pmISP - NRT

2 stops35h 15mMultiple Airlines

Fri 8/2210:30 amNRT - ISP

2 stops40h 29mMultiple Airlines

Deal found 7/1

$1,441

Thu 7/104:33 pmISP - HND

3 stops34h 17mMultiple Airlines

Tue 7/152:00 amHND - ISP

2 stops26h 21mMultiple Airlines

Deal found 7/2

$2,542

Best flights from Islip to Japan
Discover carefully curated flight deals from Islip to Japan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2025.

Fri 8/152:05 pmISP - NRT

2 stops35h 15mMultiple Airlines

Fri 8/2210:30 amNRT - ISP

2 stops40h 29mMultiple Airlines

Deal found 7/1

$1,441

Fri 8/152:05 pmISP - HND

2 stops36h 20mMultiple Airlines

Fri 8/2210:25 amHND - ISP

2 stops40h 34mMultiple Airlines

Deal found 7/1

$3,865

Last-minute flights from Islip to Japan
Discover last-minute flight deals from Islip to Japan. Data last updated July 2, 2025 and is based on user searches.

Thu 7/104:33 pmISP - NRT

3 stops33h 22mMultiple Airlines

Wed 7/1611:30 amNRT - ISP

3 stops36h 28mMultiple Airlines

Deal found 7/2

$2,346

Thu 7/104:33 pmISP - HND

3 stops34h 17mMultiple Airlines

Tue 7/152:00 amHND - ISP

2 stops26h 21mMultiple Airlines

Deal found 7/2

$2,542

Fri 8/152:05 pmISP - NRT

2 stops35h 15mMultiple Airlines

Fri 8/2210:30 amNRT - ISP

2 stops40h 29mMultiple Airlines

Deal found 7/1

$1,441

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

IslipTokyo

ISP - NRT

ISPNRT

Islip Long Island

Fri 8/15

2:05 pm-2:20 pm

2 stops35h 15m

Tokyo Narita

Fri 8/22

10:30 am-1:59 pm

2 stops40h 29m

$1,441

IslipTokyo

ISP - HND

ISPHND

Islip Long Island

Fri 8/15

2:05 pm-3:25 pm

2 stops36h 20m

Tokyo Haneda

Fri 8/22

10:25 am-1:59 pm

2 stops40h 34m

$3,865

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from Islip to Japan

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

What is the cheapest month to book a flight from Islip, New York to Japan?

Currently, February is the cheapest month in which you can book a flight from Islip, New York to Japan (average of $871). Flying from Islip, New York to Japan in December is currently the most expensive (average of $1,624). 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

What airport do you fly from for flights from Islip to Japan?
Located just 7.2 mi from the city center, Islip Long Island (ISP) is the airport most travelers will use when flying to Japan from Islip.
Can I find deals for flights from Islip to Japan that include hotel bookings?
Yes. In addition to deals on Islip to Japan flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Japan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Japan.
Can I find deals for business class flights from Islip to Japan?
Yes. Cheapflights offers flight deals from Islip to Japan 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, New York to Japan?
Currently, February is the cheapest month in which you can book a flight from Islip, New York to Japan (average of $871). Flying from Islip, New York to Japan in December is currently the most expensive (average of $1,624). 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.

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$1,441+ Cheap flights from Islip, NY (ISP) to Japan

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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Japan with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Japan

Keep the following information in mind while searching for Islip to Japan flight deals. Data was last updated July 2, 2025.

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Islip to Japan

Cheapest flights from Islip to JapanExplore the most affordable flight options available from Islip to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Explore the most affordable flight options available from Islip to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Islip to Japan

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

Cheapflights Insights

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

What is the cheapest month to book a flight from Islip, New York to Japan?

Related info for your journey

Find useful and relevant information for your journey from Islip to Japan. 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 Islip to Japan?

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

How can I find direct flights from Islip to Japan?

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

What is the cheapest month to book a flight from Islip, New York to Japan?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Islip to Japan

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Cheapest flights from Islip to Japan
Explore the most affordable flight options available from Islip to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.