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Islip

$147+ Cheap flights from San Diego to Islip, NY (SAN - ISP)

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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ISP
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Cheap flight deals from San Diego to Islip

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Islip (ISP). 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 October 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(Southwest)

One-way from

$147
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$352
Provider with most accurate pricing for San Diego-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for San Diego-Islip Long Island flights.
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From San Diego to Islip Long Island
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One-way flight from San Diego to Islip Long Island
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from San Diego to Islip

Cheapest flights from San Diego to Islip
Explore the most affordable flight options available from San Diego to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Thu 11/136:25 amSAN - ISP
2 stops25h 12mMultiple Airlines
Sun 11/167:36 pmISP - SAN
1 stop19h 51mMultiple Airlines
Deal found 10/25$422
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Thu 11/131:21 pmSAN - ISP
1 stop21h 24mBreeze Airways
Sun 11/167:36 pmISP - SAN
1 stop19h 51mBreeze Airways
Deal found 10/25$511
This Southwest deal was found by Cheapflights users on 10/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1112:00 pmSAN - ISP
1 stop7h 05mSouthwest
Tue 11/183:55 pmISP - SAN
1 stop8h 40mSouthwest
Deal found 10/25$547
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Thu 12/181:06 pmSAN - ISP
2 stops20h 36mMultiple Airlines
Sun 12/2810:38 amISP - SAN
1 stop28h 49mMultiple Airlines
Deal found 10/25$695
This Southwest deal was found by Cheapflights users on 10/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/412:00 pmSAN - ISP
1 stop7h 05mSouthwest
Tue 11/113:55 pmISP - SAN
1 stop8h 40mSouthwest
Deal found 10/24$717
This United deal was found by Cheapflights users on 10/25. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1112:55 pmSAN - ISP
2 stops19h 09mMultiple Airlines
Tue 11/187:30 amISP - SAN
3 stops17h 50mMultiple Airlines
Deal found 10/25$938
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Thu 12/181:21 pmSAN - ISP
1 stop21h 24mBreeze Airways
Sun 12/2810:38 amISP - SAN
1 stop28h 49mBreeze Airways
Deal found 10/25$947

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Islip 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 October 27, 2025.
Use the filters below to find and compare flights from San Diego to Islip that are best for you.

Fly from

San Diego

Fly to

Islip

Route

Depart

Return

Price

San DiegoIslip

SAN - ISP

SANISP

San Diego

Mon 1/12

12:00 pm-9:55 pm

1 stop6h 55m

Islip Long Island

Mon 1/19

4:05 pm-9:30 pm

1 stop8h 25m

$359

San DiegoIslip

SAN - ISP

SANISP

San Diego

Thu 11/13

6:25 am-10:37 am

2 stops25h 12m

Islip Long Island

Sun 11/16

7:36 pm-12:27 pm

1 stop19h 51m

$422

San DiegoIslip

SAN - ISP

SANISP

San Diego

Thu 11/13

1:21 pm-1:45 pm

1 stop21h 24m

Islip Long Island

Sun 11/16

7:36 pm-12:27 pm

1 stop19h 51m

$511

San DiegoIslip

SAN - ISP

SANISP

San Diego

Tue 11/11

12:00 pm-10:05 pm

1 stop7h 05m

Islip Long Island

Tue 11/18

3:55 pm-9:35 pm

1 stop8h 40m

$547

San DiegoIslip

SAN - ISP

SANISP

San Diego

Thu 11/13

9:10 am-11:50 pm

2 stops11h 40m

Islip Long Island

Sun 11/16

5:50 am-12:55 pm

2 stops10h 05m

$557

San DiegoIslip

SAN - ISP

SANISP

San Diego

Thu 12/18

1:06 pm-12:42 pm

2 stops20h 36m

$147

San DiegoIslip

SAN - ISP

SANISP

San Diego

Mon 12/1

6:20 am-11:10 pm

2 stops13h 50m

$265

San DiegoIslip

SAN - ISP

SANISP

San Diego

Tue 11/25

10:50 am-11:55 pm

1 stop10h 05m

$309

San DiegoIslip

SAN - ISP

SANISP

San Diego

Sat 11/29

6:55 am-8:50 pm

2 stops10h 55m

$359

San DiegoIslip

SAN - ISP

SANISP

San Diego

Sun 11/30

9:45 pm-11:55 am

1 stop11h 10m

$389

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Showing 1-10 of 11 results
1
2

Compare providers for flights from San Diego to Islip

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 San Diego to Islip in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 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 San Diego-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub 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 San Diego-Islip, New York 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 San Diego to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from San Diego 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 San Diego to Islip

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

Currently, June is the cheapest month in which you can book a flight from San Diego to Islip, New York (average of $78). Flying from San Diego to Islip, New York in November is currently the most expensive (average of $178). 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.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated October 27, 2025.
See what other customers who have flown with Southwest from San Diego to Islip have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Diego to Islip, New York?

    There are many flights that can get you from San Diego to Islip, New York in 6h 55m. Fly via Southwest or Breeze Airways to get the fastest option. Airlines will cover a distance of 2475 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from San Diego to Islip, New York round-trip?

    Our cheapest airline available from San Diego to Islip, New York is Southwest. Our recent data shows that you can find tickets from as low as $385 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Islip 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 San Diego to Islip, New York?

    Currently, June is the cheapest month in which you can book a flight from San Diego to Islip, New York (average of $78). Flying from San Diego to Islip, New York in November is currently the most expensive (average of $178). 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 Islip?

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Top airline flying from San Diego to Islip

Discover the top airline that operate flights from San Diego to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$385Average$466FlexibilityNo cancel feeOn-time63%

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