$150 Cheap Flights from San Diego (SAN) to Islip (ISP)

View $150 flight on Sat, Oct 18, 2025Opens in a new window

Popular airlines from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP)

Cheap Flights from San Diego to Islip (SAN-ISP)

Prices were available within the past 7 days and start at $150 for one-way flights and $342 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Wed, Oct 29 - Tue, Nov 4
SAN
San Diego
ISP
Islip
$342 Roundtrip, found 2 days ago
$342
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from San Diego to Islip, returning Tue, Nov 4, priced at $342 found 2 days ago
Southwest Airlines
Thu, Oct 30 - Mon, Nov 3
SAN
San Diego
ISP
Islip
$343 Roundtrip, found 6 days ago
$343
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Thu, Oct 30 from San Diego to Islip, returning Mon, Nov 3, priced at $343 found 6 days ago
Southwest Airlines
Wed, Oct 29 - Tue, Nov 4
SAN
San Diego
ISP
Islip
$347 Roundtrip, found 2 days ago
$347
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from San Diego to Islip, returning Tue, Nov 4, priced at $347 found 2 days ago
Southwest Airlines
Mon, Feb 2 - Sat, Feb 7
SAN
San Diego
ISP
Islip
$359 Roundtrip, found 13 hours ago
$359
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Mon, Feb 2 from San Diego to Islip, returning Sat, Feb 7, priced at $359 found 13 hours ago
Southwest Airlines
Wed, Oct 29 - Wed, Nov 5
SAN
San Diego
ISP
Islip
$363 Roundtrip, found 2 days ago
$363
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from San Diego to Islip, returning Wed, Nov 5, priced at $363 found 2 days ago
Southwest Airlines
Wed, Oct 29 - Wed, Nov 5
SAN
San Diego
ISP
Islip
$368 Roundtrip, found 2 days ago
$368
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from San Diego to Islip, returning Wed, Nov 5, priced at $368 found 2 days ago
Southwest Airlines
Wed, Oct 29 - Tue, Nov 4
SAN
San Diego
ISP
Islip
$372 Roundtrip, found 2 days ago
$372
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from San Diego to Islip, returning Tue, Nov 4, priced at $372 found 2 days ago
Southwest Airlines
Wed, Nov 5 - Mon, Nov 10
SAN
San Diego
ISP
Islip
$374 Roundtrip, found 1 day ago
$374
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Nov 5 from San Diego to Islip, returning Mon, Nov 10, priced at $374 found 1 day ago
Southwest Airlines
Wed, Oct 29 - Tue, Nov 4
SAN
San Diego
ISP
Islip
$377 Roundtrip, found 2 days ago
$377
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Oct 29 from San Diego to Islip, returning Tue, Nov 4, priced at $377 found 2 days ago
JetBlue Airways
Fri, Oct 24 - Mon, Oct 27
SAN
San Diego
ISP
Islip
$409 Roundtrip, found 11 hours ago
$409
Roundtrip
found 11 hours ago
Select JetBlue Airways flight, departing Fri, Oct 24 from San Diego to Islip, returning Mon, Oct 27, priced at $409 found 11 hours ago

Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP) cost?
Lock in a cheap one-way flight from $150 or cheap return flight from $342 from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP)?
October is the most affordable month to fly from SAN to ISP. Traveling outside of peak seasons is often the key to scoring lower fares.
What is the cheapest airline that flies from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP)?
To find the cheapest airline flying from SAN to ISP, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP)?
There aren't any daily direct flights departing from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from SAN to ISP?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP)?
To touch down at MacArthur Airport (ISP) without delays, book a flight that leaves San Diego Intl. Airport (SAN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Islip from San Diego Intl. Airport (SAN)?
John F. Kennedy Intl. Airport (JFK) is the only airport in Islip with direct flights from San Diego Intl. Airport (SAN). Consider the options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP) last-minute?
Last-minute fares from SAN to ISP are generally more expensive. To secure the cheapest rates, start searching for flights ahead of time. That being said, if you're flexible with your travel dates, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a SAN to ISP flight and hotel package?
Compared with arranging flights and hotels separately, booking a SAN to ISP flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place will take the stress out of travel planning. Just pick your flights and select from our extensive range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to MacArthur Airport (ISP)?
It's usually possible to cancel or reschedule your SAN to ISP flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
San Diego Intl.
Destination airport
MacArthur
Airlines serving
JetBlue Airways, Southwest Airlines
Roundtrip price
$342
Distance
2476 mi

Book with confidence

Book with confidence

San Diego to Islip Flights

The cheapest times to fly from San Diego to Islip

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Diego to Islip are during the month of October. You can find some of the cheapest flights from San Diego to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Diego to Islip

Sunday is one of the best days to book for cheap flights from San Diego to Islip: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Diego to Islip

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Diego to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $150 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Diego to Islip flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Diego to Islip airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Diego to Islip Flights

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*Available to One Key members.