ISP - SAN

$192 Find Cheap Flights from Islip to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to San Diego departing on 4/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San Diego, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San Diego, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$368
Breeze Airways
Tue 8/18Mon 8/24
ISP - SAN • 1 stop
Cheapest one-way
$192
Southwest
Wed 4/8
ISP - SAN • 1 stop
Top airlines
Breeze Airways
Cheapest • from $368 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Islip and San Diego. You'll need at least 1 connection.
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We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to San Diego

Tue, Aug 18 - Mon, Aug 24
Breeze Airways Logo
11:56 am - 12:33 pm
ISP
-
SAN
27h 37m
1 stop
Breeze Airways Logo
1:05 pm - 11:16 am
SAN
-
ISP
19h 11m
1 stop
$368Breeze Airways
Tue, Apr 14 - Tue, Apr 21
Southwest Logo
12:30 pm - 6:55 pm
ISP
-
SAN
9h 25m
1 stop
Southwest Logo
6:20 am - 6:30 pm
SAN
-
ISP
9h 10m
1 stop
$383Southwest
Tue, Apr 14 - Tue, Apr 21
Southwest Logo
4:10 pm - 10:40 pm
ISP
-
SAN
9h 30m
2 stops
Southwest Logo
6:20 am - 6:30 pm
SAN
-
ISP
9h 10m
1 stop
$388Southwest
Mon, Apr 13 - Tue, Apr 21
Southwest Logo
4:30 pm - 10:00 pm
ISP
-
SAN
8h 30m
1 stop
Southwest Logo
6:20 am - 6:30 pm
SAN
-
ISP
9h 10m
1 stop
$391Southwest
Tue, Apr 14 - Tue, Apr 21
Southwest Logo
4:10 pm - 10:40 pm
ISP
-
SAN
9h 30m
2 stops
Southwest Logo
10:40 pm - 11:55 am
SAN
-
ISP
10h 15m
2 stops
$393Southwest
Mon, Apr 13 - Tue, Apr 21
Southwest Logo
4:30 pm - 10:55 pm
ISP
-
SAN
9h 25m
2 stops
Southwest Logo
6:20 am - 6:30 pm
SAN
-
ISP
9h 10m
1 stop
$396Southwest
Mon, Apr 13 - Tue, Apr 21
Southwest Logo
4:30 pm - 10:55 pm
ISP
-
SAN
9h 25m
2 stops
Southwest Logo
10:40 pm - 11:55 am
SAN
-
ISP
10h 15m
2 stops
$401Southwest
Sat, May 16 - Sat, May 23
Southwest Logo
4:40 pm - 10:35 pm
ISP
-
SAN
8h 55m
1 stop
Southwest Logo
7:40 am - 11:20 pm
SAN
-
ISP
12h 40m
1 stop
$404Southwest
Sat, May 16 - Sat, May 23
Southwest Logo
9:20 am - 6:45 pm
ISP
-
SAN
12h 25m
2 stops
Southwest Logo
9:30 am - 11:20 pm
SAN
-
ISP
10h 50m
2 stops
$409Southwest
Wed, Jul 22 - Sat, Aug 1
Southwest Logo
9:00 am - 7:35 pm
ISP
-
SAN
13h 35m
2 stops
Southwest Logo
1:05 pm - 11:10 pm
SAN
-
ISP
7h 05m
1 stop
$442Southwest
Booking Insights

KAYAK's insights & trends for Islip to San Diego flights

Get data-powered insights and trends into flights from Islip to San Diego to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Islip to San Diego?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Islip to San Diego were found on Breeze Airways ($368) and Southwest ($383).

Find deals

Good to know

Cheapest flight$192
Flight from Islip to San Diego

When to book flights from Islip to San Diego

Are your dates flexible? Find out the best times to travel from Islip to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Islip to San Diego

  • What is the cheapest flight from Islip to San Diego?

    In the last 3 days, the lowest price for a flight from Islip to San Diego was $192 for a one-way ticket and $368 for a round-trip.

  • Do I need a passport to fly between Islip and San Diego?

    A passport is not required to fly from Islip to San Diego.

  • Which airports will I be using when flying from Islip to San Diego?

    Islip airport is called Islip Long Island and the only airport in San Diego is San Diego.

  • Which aircraft models fly most regularly from Islip to San Diego?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Islip with another airline. Booking your flights between Islip and SAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Islip to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Islip to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4320 reviews
8.1Boarding
7.5Entertainment
8.0Comfort
7.0Food
8.6Crew
Airline reviews

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

8.0 ExcellentTobin, Mar 2026
SJC - BUR
Read more Southwest reviews

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Mediocre. Boarding is now unpleasant. The employees, once friendly and nice, are now regularly speaking sternly to passengers, badgering them to do things right so they can take off on time and gate check bags because they don't have enough overhead bin space. The pretzel snack was crushed flat and broken into even smaller pieces, which happens frequently lately. Drink service was suspended before they reached my row.

The charges were ridiculous for an hour flight and the turbulence was very scary.

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Everything you need to know for your flight from Islip to San Diego

Information on your arrival and departure airports

Islip (ISP)
San Diego (SAN)