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Incheon Intl

$434+ Cheap flights from Islip, NY (ISP) to Incheon Intl (ICN)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — ICN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Islip to Incheon Intl

Best flights from Islip to Incheon Intl
Discover carefully curated flight deals from Islip to Incheon Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This Trip.com deal was found by Cheapflights users on 12/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/259:25 amISP - ICN
2 stops42h 20mMultiple Airlines
Sun 2/17:25 pmICN - ISP
2 stops37h 23mMultiple Airlines
Deal found 12/11$1,210
This Trip.com deal was found by Cheapflights users on 12/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2410:00 amISP - ICN
2 stops41h 45mMultiple Airlines
Sat 1/316:00 pmICN - ISP
2 stops28h 52mMultiple Airlines
Deal found 12/10$1,405

Find flight deals from Islip to Incheon Intl

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Incheon Intl (ICN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$1,210
(Trip.com)

One-way from

$434
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$1,633
Provider with most accurate pricing for Islip Long Island-Incheon Intl flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-Incheon Intl flights.
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From Islip Long Island to Incheon Intl
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One-way flight from Islip Long Island to Incheon Intl
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Incheon Intl 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 December 12, 2025.
Use the filters below to find and compare flights from Islip to Incheon Intl Airport that are best for you.

Fly from

Islip

Fly to

Incheon Intl

Route

Depart

Return

Price

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Sun 1/25

9:25 am-5:45 pm

2 stops42h 20m

Incheon Intl

Sun 2/1

7:25 pm-6:48 pm

2 stops37h 23m

$1,210

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Sat 1/24

10:00 am-5:45 pm

2 stops41h 45m

Incheon Intl

Sat 1/31

6:00 pm-8:52 am

2 stops28h 52m

$1,405

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Tue 1/20

12:00 pm-6:35 pm

2 stops40h 35m

$434

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

  • Most accurate provider: When it comes to deals on Islip, New York-Incheon Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Incheon Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Incheon Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Incheon Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Incheon Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Incheon Intl

Have a flexible travel schedule? Discover the best time to fly to Incheon Intl 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 Incheon Intl Airport

What is the cheapest month to book a flight from Islip, New York to Incheon Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Islip, New York to Incheon Intl Airport (average of $258). Flying from Islip, New York to Incheon Intl Airport in June is currently the most expensive (average of $566). 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

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

    Islip Long Island (ISP) is the airport you will fly out of if you book a flight from Islip to Incheon Intl. You should not have trouble finding flights to Incheon Intl from Long Island; the airport handles an average of 0 outbound flights to Incheon Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Islip airport to Incheon Intl. It is only a 7.2 mi journey to Long Island (ISP) from Islip’s city center.

  • Can I find deals for flights from Islip to Incheon Intl that include hotel bookings?

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

  • How can I find direct flights from Islip to Incheon Intl?

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

  • Can I find deals for business class flights from Islip to Incheon Intl?

    Yes. Cheapflights offers flight deals from Islip to Incheon Intl 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 Incheon Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Islip, New York to Incheon Intl Airport (average of $258). Flying from Islip, New York to Incheon Intl Airport in June is currently the most expensive (average of $566). 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

Traveling to a place near Incheon Intl Airport?

Book flights to Incheon Intl Airport if you plan to visit one of these locations
Suwon
Seongnam

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