$241+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ISP
Aug 3 — Aug 101
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 July 29, 2025.
Round-trip from | $671 (KAYAK) |
|---|---|
One-way from | $241 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $377 |
Find flight deals from San Diego to Islip
Cheapest flights from San Diego to IslipExplore 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 July 29, 2025.
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 July 29, 2025.
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/41:12 pmSAN - ISP
2 stops29h 46mFrontier
Thu 8/76:00 amISP - SAN
2 stops36h 59mFrontier
Deal found 7/28![Frontier logo]()
$584
This KAYAK deal was found by Cheapflights users on 7/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:21 pmSAN - ISP
1 stop21h 24mBreeze Airways
Mon 11/32:25 pmISP - SAN
1 stop25h 11mBreeze Airways
Deal found 7/27![Breeze Airways logo]()
$671
This Southwest deal was found by Cheapflights users on 7/28. 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.
Mon 8/412:10 pmSAN - ISP
1 stop8h 55mSouthwest
Thu 8/76:00 amISP - SAN
1 stop12h 30mSouthwest
Deal found 7/28![Southwest logo]()
$852
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Wed 8/136:23 pmSAN - ISP
3 stops21h 36mMultiple Airlines
Sun 8/177:39 pmISP - SAN
3 stops30h 58mMultiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$898
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 July 29, 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
Thu 10/30
1:21 pm-1:45 pm
1 stop21h 24m
Islip Long Island
Mon 11/3
2:25 pm-12:36 pm
1 stop25h 11m
$671
San DiegoIslip
SAN - ISP
SANISP
San Diego
Wed 8/13
6:23 pm-6:59 pm
3 stops21h 36m
Islip Long Island
Sun 8/17
7:39 pm-11:37 pm
3 stops30h 58m
$898
San DiegoIslip
SAN - ISP
SANISP
San Diego
Fri 8/29
9:10 pm-12:05 pm
1 stop11h 55m
$241
San DiegoIslip
SAN - ISP
SANISP
San Diego
Sun 8/24
12:02 pm-10:04 am
3 stops19h 02m
$344
San DiegoIslip
SAN - ISP
SANISP
San Diego
Thu 11/6
1:21 pm-1:45 pm
1 stop21h 24m
$366
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.
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 July 29, 2025.
See what other customers who have flown with Southwest and Breeze Airways 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.
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
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.
Traveling to a place near Islip?
Book flights to Islip if you plan to visit one of these locationsRiverhead
Southampton
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Alternative routes for San Diego to Islip
See prices for flight routes from nearby airports that may be better suited for you.
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 July 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$448 | Average$498 | FlexibilityNo cancel fee | On-time63% |