$2,602+ 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SEL
Dec 6 — Dec 131
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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Find flight deals from Islip to Seoul
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 November 6, 2025.
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 November 6, 2025.
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Sun 12/218:35 pmISP - ICN
2 stops42h 35mMultiple Airlines
Sun 12/289:10 amICN - ISP
1 stop21h 05mMultiple Airlines
Deal found 11/6![Multiple Airlines logo]()
$2,602
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Sat 12/206:40 pmISP - ICN
2 stops55h 40mMultiple Airlines
Sat 12/279:10 amICN - ISP
1 stop21h 05mMultiple Airlines
Deal found 11/4![Multiple Airlines logo]()
$2,797
Cheap 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 November 6, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $2,602 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $1,091 |
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 November 6, 2025.
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
Sun 12/21
8:35 pm-5:10 am
2 stops42h 35m
Incheon Intl
Sun 12/28
9:10 am-4:15 pm
1 stop21h 05m
$2,602
IslipIncheon
ISP - ICN
ISPICN
Islip Long Island
Sat 12/20
6:40 pm-4:20 pm
2 stops55h 40m
Incheon Intl
Sat 12/27
9:10 am-4:15 pm
1 stop21h 05m
$2,797
Compare providers for flights from Islip to Seoul
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Seoul in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Islip, New York-Seoul flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-Seoul flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $284). Flying from Islip, New York to Seoul in June is currently the most expensive (average of $580). 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.