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Islip

$219+ 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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ISP
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$527
(Frontier)

One-way from

$219
(Southwest)

Popular in

December

Cheapest in

January

Average price

$417
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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Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This Frontier deal was found by Cheapflights users on 6/11. 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.
mar. 6/247:06 pmSAN - ISP
2 stops17h 35mFrontier
mié. 6/258:21 pmISP - SAN
2 stops22h 47mFrontier
Deal found 6/11$527
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/1711:10 amSAN - ISP
1 stop8h 45mSouthwest
mié. 10/224:55 pmISP - SAN
1 stop9h 15mSouthwest
Deal found 6/10$647
This FlightHub deal was found by Cheapflights users on 6/11. 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.
sáb. 8/1611:53 amSAN - ISP
1 stop28h 06mBreeze Airways
mié. 8/202:55 pmISP - SAN
1 stop24h 08mBreeze Airways
Deal found 6/11$668
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/275:50 pmSAN - ISP
3 stops16h 42mMultiple Airlines
dom. 7/67:39 pmISP - SAN
3 stops30h 50mMultiple Airlines
Deal found 6/10$892

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 junio 12, 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

mar. 6/24

7:06 pm-3:41 pm

2 stops17h 35m

Islip Long Island

mié. 6/25

8:21 pm-4:08 pm

2 stops22h 47m

$527

San DiegoIslip

SAN - ISP

SANISP

San Diego

vie. 6/27

12:10 pm-12:05 am

1 stop8h 55m

Islip Long Island

dom. 7/6

5:55 pm-11:25 pm

1 stop8h 30m

$647

San DiegoIslip

SAN - ISP

SANISP

San Diego

sáb. 8/16

11:53 am-6:59 pm

1 stop28h 06m

Islip Long Island

mié. 8/20

2:55 pm-12:03 pm

1 stop24h 08m

$668

San DiegoIslip

SAN - ISP

SANISP

San Diego

vie. 6/27

5:50 pm-1:32 pm

3 stops16h 42m

Islip Long Island

dom. 7/6

7:39 pm-11:29 pm

3 stops30h 50m

$892

San DiegoIslip

SAN - ISP

SANISP

San Diego

vie. 8/1

6:20 am-8:35 pm

1 stop11h 15m

$219

San DiegoIslip

SAN - ISP

SANISP

San Diego

vie. 8/1

7:00 pm-1:32 pm

3 stops15h 32m

$371

San DiegoIslip

SAN - ISP

SANISP

San Diego

sáb. 6/28

12:48 pm-6:59 pm

1 stop27h 11m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, January is the cheapest month in which you can book a flight from San Diego to Islip, New York (average of $108). Flying from San Diego to Islip, New York in November is currently the most expensive (average of $213). 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.

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 junio 12, 2025.
Peruse reviews from past customers who have flown with Breeze Airways, Southwest and Frontier from San Diego to Islip to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
178 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,287 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Frontier
5.9
Fair
3,295 reviews
Breeze Airways
8.1
Very good
178 reviews

Boarding

8.3

Food

6.7

Crew

8.8

Comfort

8.2

Overall

8.1

Entertainment

6.6

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

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.

  • What are the cheapest airlines flying from San Diego to Islip, New York round-trip?

    Our cheapest airline available from San Diego to Islip, New York is Frontier. Our recent data shows that you can find tickets from as low as $527 on this airline. Additional options worth looking into are Southwest and Breeze Airways, starting at $647 and $668 round-trip.

  • 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, January is the cheapest month in which you can book a flight from San Diego to Islip, New York (average of $108). Flying from San Diego to Islip, New York in November is currently the most expensive (average of $213). 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 Diego?

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Alternative routes for San Diego to 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$448Average$502FlexibilityNo cancel feeOn-time63%

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