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Cheap flights from Islip, New York to San Salvador from $683

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, New York to San Salvador departing on 12/1. 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, New York to San Salvador

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:59 am - 8:15 pmISP-SAL
11h 16m1 stop
Multiple Airlines Logo
3:52 pm - 7:34 pmSAL-ISP
26h 42m2 stops
$683Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Multiple Airlines Logo
9:59 am - 8:15 pmISP-SAL
11h 16m1 stop
Multiple Airlines Logo
7:45 am - 7:45 pmSAL-ISP
11h 00m1 stop
$935Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Multiple Airlines Logo
1:27 pm - 1:49 pmISP-SAL
25h 22m2 stops
Multiple Airlines Logo
7:45 am - 7:45 pmSAL-ISP
11h 00m1 stop
$1,255Multiple Airlines
Find Deal
Fri, Dec 19 - Fri, Dec 26
Frontier Logo
8:35 pm - 11:56 amISP-SAL
16h 21m2 stops
Frontier Logo
11:15 am - 1:09 pmSAL-ISP
24h 54m2 stops
$1,629Frontier
Find Deal
Sun, Dec 21 - Sun, Jan 4
Multiple Airlines Logo
7:30 am - 8:15 pmISP-SAL
13h 45m1 stop
Multiple Airlines Logo
7:45 am - 7:45 pmSAL-ISP
11h 00m1 stop
$2,159Multiple Airlines
Find Deal
Fri, Dec 19 - Fri, Dec 26

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York 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, momondo users made 832,500 searches. Data last updated November 5, 2025.
Use the filters below to find and compare flights from Islip, New York to San Salvador that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Mon 12/1

9:59 am-8:15 pm

1 stop11h 16m

San Salvador El Salvador Intl

Mon 12/8

3:52 pm-7:34 pm

2 stops26h 42m

$683

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Mon 12/1

9:59 am-8:15 pm

1 stop11h 16m

San Salvador El Salvador Intl

Mon 12/8

7:45 am-7:45 pm

1 stop11h 00m

$935

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Fri 12/19

1:27 pm-1:49 pm

2 stops25h 22m

San Salvador El Salvador Intl

Fri 12/26

7:45 am-7:45 pm

1 stop11h 00m

$1,255

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Sun 12/21

8:35 pm-11:56 am

2 stops16h 21m

San Salvador El Salvador Intl

Sun 1/4

11:15 am-1:09 pm

2 stops24h 54m

$1,629

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Fri 12/19

7:30 am-8:15 pm

1 stop13h 45m

San Salvador El Salvador Intl

Fri 12/26

7:45 am-7:45 pm

1 stop11h 00m

$2,159

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Islip, New York to San Salvador

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 San Salvador?

On average, the least expensive day to fly to San Salvador from Islip, New York is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $412. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to San Salvador on Saturday is $458.

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

Our most recent data shows that the best time of day to fly to San Salvador is in the morning. Flights from Islip, New York to San Salvador during this time can be as low as $412. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $557 on average. Flights to San Salvador from Islip, New York at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Islip, New York to San Salvador

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

Cheap Islip, New York to San Salvador (ISP to SAL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to San Salvador

Direct flights

None
There are no direct flights from Islip, New York to San Salvador. There are no popular flight routes from Islip, New York to San Salvador.
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  • How far is Islip Long Island to San Salvador El Salvador Intl by plane?

    San Salvador El Salvador Intl is 2101.2 mi away from Islip Long Island. Typically, this will take 11h 16m by plane in normal conditions.

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to San Salvador El Salvador Intl Airport.

  • What documentation or ID do you need to fly to San Salvador El Salvador Intl Airport?

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

Traveling to a place near San Salvador?

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

Why use momondo?

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

It is quick and easy to find Islip to San Salvador 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 San Salvador that suits you.

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

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

How can momondo help me find flights from Islip to San Salvador?

momondo helps you find the best flight between Islip and San Salvador by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Islip to San Salvador flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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