Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Islip to Seoul from $1,326

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Islip to Seoul departing on 10/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Islip to Seoul

Cheap round-trip flights

Logo
4:58 pm - 5:45 pmISP-ICN
35h 47m2 stops
Logo
9:35 am - 10:37 amICN-ISP
39h 02m2 stops
$1,326
Find Deal
Fri, Oct 31 - Fri, Nov 7
Logo
6:37 pm - 3:50 pmISP-ICN
32h 13m2 stops
Logo
9:45 am - 5:42 pmICN-ISP
21h 57m2 stops
$1,614
Find Deal
Thu, Oct 30 - Thu, Nov 6
Logo
12:40 pm - 4:35 pmISP-ICN
38h 55m1 stop
Logo
6:55 pm - 1:39 pmICN-ISP
56h 44m2 stops
$1,896
Find Deal
Fri, Oct 31 - Fri, Nov 7
Logo
7:30 am - 4:35 pmISP-ICN
20h 05m1 stop
Logo
9:55 pm - 1:45 pmICN-ISP
53h 50m2 stops
$1,923
Find Deal
Wed, Oct 29 - Wed, Nov 5
Logo
7:30 am - 4:35 pmISP-ICN
20h 05m1 stop
Logo
9:55 pm - 8:07 pmICN-ISP
36h 12m2 stops
$1,931
Find Deal
Thu, Oct 30 - Thu, Nov 6
Logo
7:30 am - 4:35 pmISP-ICN
20h 05m1 stop
Logo
9:10 am - 7:45 pmICN-ISP
24h 35m1 stop
$2,320
Find Deal
Thu, Oct 30 - Thu, Nov 6
Logo
9:59 am - 10:45 amISP-ICN
35h 46m2 stops
Logo
6:55 pm - 4:15 pmICN-ISP
35h 20m3 stops
$2,356
Find Deal
Fri, Oct 31 - Fri, Nov 7
Logo
7:30 am - 4:35 pmISP-ICN
20h 05m1 stop
Logo
9:10 am - 7:45 pmICN-ISP
24h 35m1 stop
$2,420
Find Deal
Fri, Oct 31 - Fri, Nov 7
Logo
12:40 pm - 4:35 pmISP-ICN
38h 55m1 stop
Logo
12:20 am - 7:45 pmICN-ISP
33h 25m2 stops
$2,788
Find Deal
Fri, Oct 31 - Thu, Nov 6

momondo Fare Finder

 
Customize your flight search to find flights from Islip to Incheon Intl Airport 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, momondo users made 832,500 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Islip to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Fri 10/31

4:58 pm-5:45 pm

2 stops35h 47m

Incheon Intl

Fri 11/7

9:35 am-10:37 am

2 stops39h 02m

$1,326

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Thu 10/30

6:37 pm-3:50 pm

2 stops32h 13m

Incheon Intl

Thu 11/6

9:45 am-5:42 pm

2 stops21h 57m

$1,614

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Fri 10/31

12:40 pm-4:35 pm

1 stop38h 55m

Incheon Intl

Fri 11/7

6:55 pm-1:39 pm

2 stops56h 44m

$1,896

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Wed 10/29

7:30 am-4:35 pm

1 stop20h 05m

Incheon Intl

Wed 11/5

9:55 pm-1:45 pm

2 stops53h 50m

$1,923

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Thu 10/30

7:30 am-4:35 pm

1 stop20h 05m

Incheon Intl

Thu 11/6

9:55 pm-8:07 pm

2 stops36h 12m

$1,931

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Thu 10/30

7:30 am-4:35 pm

1 stop20h 05m

Incheon Intl

Thu 11/6

9:10 am-7:45 pm

1 stop24h 35m

$2,320

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Fri 10/31

9:59 am-10:45 am

2 stops35h 46m

Incheon Intl

Fri 11/7

6:55 pm-4:15 pm

3 stops35h 20m

$2,356

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Fri 10/31

7:30 am-4:35 pm

1 stop20h 05m

Incheon Intl

Fri 11/7

9:10 am-7:45 pm

1 stop24h 35m

$2,420

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Fri 10/31

12:40 pm-4:35 pm

1 stop38h 55m

Incheon Intl

Thu 11/6

12:20 am-7:45 pm

2 stops33h 25m

$2,788

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Seoul from

How to get the cheapest flight ticket from Islip to Incheon Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Incheon Intl Airport?

The cheapest day to depart from Islip to Incheon Intl Airport is on a Wednesday when prices can be found for as low as $1,155. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,322. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

In the morning is the cheapest time of day to fly from Islip to Incheon Intl Airport when you can find flight prices for as low as $1,118. Flying to Incheon Intl Airport in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,532 on average. Flights to Incheon Intl Airport from Islip in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Islip to Incheon Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Islip to Incheon Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip to Incheon Intl Airport (ISP to ICN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip to Incheon Intl Airport

Direct flights

None
There are no direct flights from Islip to Incheon Intl Airport. There are no popular flight routes from Islip to Incheon Intl Airport.
Search flight deals

  • How far is Islip Long Island to Incheon Intl by plane?

    The distance between Islip Long Island and Incheon Intl is about 6889.0 mi. 20h 05m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Islip Long Island Airport to Incheon Intl Airport?

    Prices for flights from Islip Long Island Airport to Incheon Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to Incheon Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Incheon Intl Airport.

  • What documentation or ID do you need to fly to Incheon Intl Airport?

    The required travel and health documents for your Incheon Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Incheon Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Seoul?

Book flights to Seoul if you plan to visit one of these locations
Suwon
Daejeon
Seongnam
Anyang

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Seoul?

It is quick and easy to find Islip to Seoul flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seoul that suits you.

Can I find flights from Islip to Seoul with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Islip to Seoul flights to just show those with flexible booking policies.

How can momondo help me find flights from Islip to Seoul?

momondo provides multiple filters to help you find the best flight to Seoul from Islip. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Islip to Seoul right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seoul, momondo offers a useful price alert feature which will track prices for flights to Seoul from Islip and alert you when they change.

An easier way to manage your Incheon Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 10/16
Thu 10/23
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Seoul

Popular cities in South Korea

Popular flights according to clicks in the last 7 days on momondo
Flights to Seoul Gimpo Intl Airportfrom $654