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$618+ Cheap flights from Islip, NY (ISP) to San Salvador (SAL)

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SAL
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
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 January 12, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$618
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$396
Provider with most accurate pricing for Islip Long Island-San Salvador El Salvador Intl flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-San Salvador El Salvador Intl flights.
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From Islip Long Island to San Salvador El Salvador Intl
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Highest demand for flights based on searches. 16% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 12, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Wed 2/259:33 am
ISP
-
SAL
2 stops30h 23m
Multiple Airlines
Wed 3/47:45 am
SAL
-
ISP
1 stop9h 59m
Multiple Airlines
Deal found 1/11$618
This Expedia deal was found by Cheapflights users on 1/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/69:43 pm
ISP
-
SAL
1 stop15h 38m
Multiple Airlines
Wed 2/188:00 am
SAL
-
ISP
2 stops49h 02m
Multiple Airlines
Deal found 1/10$756
This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Sun 2/159:59 am
ISP
-
SAL
1 stop11h 16m
Multiple Airlines
Thu 2/198:00 am
SAL
-
ISP
2 stops28h 31m
Multiple Airlines
Deal found 1/11$906
This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Sun 2/159:59 am
ISP
-
SAL
1 stop11h 16m
Multiple Airlines
Sun 2/224:02 pm
SAL
-
ISP
2 stops14h 36m
Multiple Airlines
Deal found 1/11$915
This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Sun 2/159:59 am
ISP
-
SAL
1 stop11h 16m
Multiple Airlines
Mon 2/2310:20 pm
SAL
-
ISP
2 stops33h 20m
Multiple Airlines
Deal found 1/11$928
This Frontier deal was found by Cheapflights users on 1/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/137:59 pm
ISP
-
SAL
2 stops18h 12m
Frontier
Sun 2/152:16 pm
SAL
-
ISP
2 stops16h 22m
Frontier
Deal found 1/11$935
This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Mon 2/163:34 pm
ISP
-
SAL
2 stops24h 22m
Multiple Airlines
Mon 2/237:45 am
SAL
-
ISP
1 stop9h 59m
Multiple Airlines
Deal found 1/11$941
This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Fri 2/138:45 pm
ISP
-
SAL
2 stops43h 11m
Multiple Airlines
Mon 2/237:45 am
SAL
-
ISP
1 stop9h 59m
Multiple Airlines
Deal found 1/11$995
This Frontier deal was found by Cheapflights users on 1/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/137:59 pm
ISP
-
SAL
2 stops18h 12m
Frontier
Sun 2/222:16 pm
SAL
-
ISP
2 stops16h 22m
Frontier
Deal found 1/11$1,014
This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Sat 2/1411:50 am
ISP
-
SAL
2 stops26h 21m
Multiple Airlines
Mon 2/237:45 am
SAL
-
ISP
1 stop9h 59m
Multiple Airlines
Deal found 1/11$1,015

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 January 12, 2026.
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

Wed 2/25

9:33 am-2:56 pm

2 stops30h 23m

San Salvador El Salvador Intl

Wed 3/4

7:45 am-6:44 pm

1 stop9h 59m

$618

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Fri 2/6

9:43 pm-12:21 pm

1 stop15h 38m

San Salvador El Salvador Intl

Wed 2/18

8:00 am-10:02 am

2 stops49h 02m

$756

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Sun 2/15

9:59 am-8:15 pm

1 stop11h 16m

San Salvador El Salvador Intl

Thu 2/19

8:00 am-1:31 pm

2 stops28h 31m

$906

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Sun 2/15

9:59 am-8:15 pm

1 stop11h 16m

San Salvador El Salvador Intl

Sun 2/22

4:02 pm-7:38 am

2 stops14h 36m

$915

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Fri 2/13

7:59 pm-1:11 pm

2 stops18h 12m

San Salvador El Salvador Intl

Sun 2/15

2:16 pm-7:38 am

2 stops16h 22m

$935

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Mon 2/16

3:34 pm-2:56 pm

2 stops24h 22m

San Salvador El Salvador Intl

Mon 2/23

7:45 am-6:44 pm

1 stop9h 59m

$941

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Fri 2/13

7:59 pm-1:11 pm

2 stops18h 12m

San Salvador El Salvador Intl

Sun 2/22

2:16 pm-7:38 am

2 stops16h 22m

$1,014

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Sat 2/14

11:50 am-1:11 pm

2 stops26h 21m

San Salvador El Salvador Intl

Mon 2/23

7:45 am-6:44 pm

1 stop9h 59m

$1,015

IslipSan Salvador

ISP - SAL

ISPSAL

Islip Long Island

Mon 2/16

9:59 am-8:15 pm

1 stop11h 16m

San Salvador El Salvador Intl

Thu 2/19

8:00 am-1:31 pm

2 stops28h 31m

$1,073

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Compare providers for flights from Islip to San Salvador

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 San Salvador in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-San Salvador 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-San Salvador flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-San Salvador flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-San Salvador 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-San Salvador 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 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, October is the cheapest month in which you can book a flight from Islip, New York to San Salvador (average of $93). Flying from Islip, New York to San Salvador in July is currently the most expensive (average of $205). 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, October is the cheapest month in which you can book a flight from Islip, New York to San Salvador (average of $93). Flying from Islip, New York to San Salvador in July is currently the most expensive (average of $205). 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
Acajutla
Sonsonate
El Cuco
La Libertad

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