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$258+ Cheap flights from Islip, NY (ISP) to San Salvador (SAL)

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SAL
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Islip to San Salvador

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to San Salvador (SAL). 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 agosto 14, 2025.

Round-trip from

$571
(Kiwi.com)

One-way from

$258
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$475
From Islip Long Island to San Salvador El Salvador Intl
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One-way flight from Islip Long Island to San Salvador El Salvador Intl
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Highest demand for flights based on searches. 19% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Islip to San Salvador

Cheapest flights from Islip to San Salvador
Explore the most affordable flight options available from Islip to San Salvador. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/287:33 pmISP - SAL
1 stop24h 22mMultiple Airlines
lun. 9/110:25 pmSAL - ISP
2 stops23h 34mMultiple Airlines
Deal found 8/11$514
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
sáb. 9/274:33 pmISP - SAL
1 stop29h 42mMultiple Airlines
sáb. 10/410:20 pmSAL - ISP
2 stops34h 20mMultiple Airlines
Deal found 8/13$866
This FlightHub deal was found by Cheapflights users on 8/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/287:33 pmISP - SAL
2 stops29h 01mFrontier
lun. 9/111:44 pmSAL - ISP
2 stops22h 15mFrontier
Deal found 8/11$910

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to San Salvador 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 agosto 14, 2025.
Use the filters below to find and compare flights from Islip to San Salvador that are best for you.

Fly from

Islip

Fly to

San Salvador

Route

Depart

Return

Price

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

jue. 8/28

7:33 pm-5:55 pm

1 stop24h 22m

San Salvador El Salvador Intl

lun. 9/1

10:25 pm-11:59 pm

2 stops23h 34m

$514

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

sáb. 9/27

4:33 pm-8:15 pm

1 stop29h 42m

San Salvador El Salvador Intl

sáb. 10/4

10:20 pm-10:40 am

2 stops34h 20m

$866

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

jue. 8/28

7:33 pm-10:34 pm

2 stops29h 01m

San Salvador El Salvador Intl

lun. 9/1

11:44 pm-11:59 pm

2 stops22h 15m

$910

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

sáb. 8/23

7:33 pm-12:14 pm

2 stops18h 41m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Best time to book a flight from Islip to San Salvador

Have a flexible travel schedule? Discover the best time to fly to San Salvador 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 San Salvador

What is the cheapest month to book a flight from Islip, New York to San Salvador?

Currently, September is the cheapest month in which you can book a flight from Islip, New York to San Salvador (average of $260). Flying from Islip, New York to San Salvador in December is currently the most expensive (average of $588). 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 San Salvador. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Islip to San Salvador that include hotel bookings?

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

  • How can I find direct flights from Islip to San Salvador?

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

  • Can I find deals for business class flights from Islip to San Salvador?

    Yes. Cheapflights offers flight deals from Islip to San Salvador 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 San Salvador?

    Currently, September is the cheapest month in which you can book a flight from Islip, New York to San Salvador (average of $260). Flying from Islip, New York to San Salvador in December is currently the most expensive (average of $588). 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 San Salvador?

Book flights to San Salvador if you plan to visit one of these locations
Sonsonate
El Cuco
La Libertad
Acajutla

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