$3,116+ Cheap flights from Islip, NY (ISP) to Seoul (SEL)
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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SEL
Feb 19 — Feb 261
1 adult, Economy
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Cheapest flights from Islip to SeoulExplore the most affordable flight options available from Islip to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.
Explore the most affordable flight options available from Islip to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/69:59 am
ISP
- ICN
1 stop40h 36m
Multiple Airlines
Fri 3/137:30 pm
ICN
- ISP
2 stops28h 40m
Multiple Airlines
Deal found 1/19![Multiple Airlines logo]()
$3,116
Find flight deals from Islip to Seoul
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Seoul (SEL). 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 January 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 1 star |
Round-trip from | $1,302 (Trip.com) |
Popular in | December |
Cheapest in | January |
Average price | $983 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Seoul 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 January 20, 2026.
Use the filters below to find and compare flights from Islip to Seoul that are best for you.
Fly from
Islip
Fly to
Seoul
Route
Depart
Return
Price
IslipIncheon
ISP - ICN
ISPICN
Islip Long Island
Fri 3/6
9:59 am-4:35 pm
1 stop40h 36m
Incheon Intl
Fri 3/13
7:30 pm-11:10 am
2 stops28h 40m
$3,116
- Most accurate provider: When it comes to deals on Islip, New York-Seoul 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-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Seoul flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Islip, New York-Seoul 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-Seoul 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 Seoul
Have a flexible travel schedule? Discover the best time to fly to Seoul 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 Seoul
What is the cheapest month to book a flight from Islip, New York to Seoul?
Currently, October is the cheapest month in which you can book a flight from Islip, New York to Seoul (average of $257). Flying from Islip, New York to Seoul in December is currently the most expensive (average of $684). 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.