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Cheap flights from Islip to Seoul from $1,902

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 10/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip to Seoul

Cheap round-trip flights

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4:58 pm - 6:35 pmISP-ICN
36h 37m2 stops
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9:30 am - 1:24 pmICN-ISP
16h 54m1 stop
$1,902
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Wed, Oct 15 - Wed, Oct 22
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9:37 pm - 6:35 pmISP-ICN
31h 58m2 stops
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9:30 am - 3:21 pmICN-ISP
18h 51m1 stop
$1,982
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Tue, Oct 14 - Tue, Oct 21
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4:33 pm - 5:30 pmISP-ICN
35h 57m3 stops
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9:25 pm - 10:58 amICN-ISP
26h 33m2 stops
$2,188
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Wed, Oct 15 - Wed, Oct 22
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7:30 am - 5:25 pmISP-ICN
20h 55m1 stop
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9:30 am - 8:01 pmICN-ISP
23h 31m1 stop
$2,721
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Wed, Oct 15 - Wed, Oct 22
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7:30 am - 5:25 pmISP-ICN
20h 55m1 stop
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1:35 am - 8:01 pmICN-ISP
31h 26m2 stops
$2,967
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Tue, Oct 14 - Mon, Oct 20
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7:30 am - 5:25 pmISP-ICN
20h 55m1 stop
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1:20 am - 8:01 pmICN-ISP
31h 41m2 stops
$3,035
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Wed, Oct 15 - Tue, Oct 21
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4:33 pm - 5:25 pmISP-ICN
35h 52m1 stop
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9:30 am - 1:24 pmICN-ISP
16h 54m1 stop
$3,086
Find Deal
Tue, Oct 14 - Tue, Oct 21

momondo 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, momondo users made 832,500 searches. Data last updated September 1, 2025.
Use the filters below to find and compare flights from Islip to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Wed 10/15

4:58 pm-6:35 pm

2 stops36h 37m

Incheon Intl

Wed 10/22

9:30 am-1:24 pm

1 stop16h 54m

$1,902

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Tue 10/14

9:37 pm-6:35 pm

2 stops31h 58m

Incheon Intl

Tue 10/21

9:30 am-3:21 pm

1 stop18h 51m

$1,982

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Wed 10/15

4:33 pm-5:30 pm

3 stops35h 57m

Incheon Intl

Wed 10/22

9:25 pm-10:58 am

2 stops26h 33m

$2,188

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Wed 10/15

7:30 am-5:25 pm

1 stop20h 55m

Incheon Intl

Wed 10/22

9:30 am-8:01 pm

1 stop23h 31m

$2,721

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Tue 10/14

7:30 am-5:25 pm

1 stop20h 55m

Incheon Intl

Mon 10/20

1:35 am-8:01 pm

2 stops31h 26m

$2,967

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Wed 10/15

7:30 am-5:25 pm

1 stop20h 55m

Incheon Intl

Tue 10/21

1:20 am-8:01 pm

2 stops31h 41m

$3,035

IslipIncheon

ISP - ICN

ISPICN

Islip Long Island

Tue 10/14

4:33 pm-5:25 pm

1 stop35h 52m

Incheon Intl

Tue 10/21

9:30 am-1:24 pm

1 stop16h 54m

$3,086

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 Seoul

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 Seoul?

According to our data, Wednesday is the cheapest day to fly to Seoul from Islip. The lowest ticket price found for a Wednesday departure recently was $1,170. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Saturday, with ticket prices averaging around $1,332.

What is the cheapest time of day to depart on your flight to Seoul?

Flying to Seoul from Islip in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,145 when looking at flights departing in the morning. In the evening is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,280 per ticket.

When to book flights from Islip to Seoul

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

Cheap Islip to Seoul (ISP to SEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip to Seoul

Direct flights

None
There are no direct flights from Islip to Seoul. There are no popular flight routes from Islip to Seoul.
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  • How far is Islip Long Island to Seoul by plane?

    Islip Long Island and Seoul are 6874.4 mi apart from one another. Typically, this will take 20h 55m by plane in normal conditions.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Seoul.

  • What documentation or ID do you need to fly to Seoul?

    The required travel and health documents for your Seoul 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 Seoul. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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?

Once you have performed a search for Islip to Seoul flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Seoul from Islip. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul
Seoul Gimpo Intl Airport
Incheon Intl Airport