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Cheap flights from Islip, New York to San Diego from $127

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to San Diego departing on 11/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
1:35 pm - 8:45 pmISP-SAN
10h 10m1 stop
Southwest Logo
6:20 am - 5:15 pmSAN-ISP
7h 55m1 stop
$507Southwest
Find Deal
ter, dez 23 - ter, dez 30
Southwest Logo
1:35 pm - 8:45 pmISP-SAN
10h 10m1 stop
Southwest Logo
8:30 am - 11:55 pmSAN-ISP
12h 25m2 stops
$528Southwest
Find Deal
ter, dez 23 - ter, dez 30
Southwest Logo
1:35 pm - 8:45 pmISP-SAN
10h 10m1 stop
Southwest Logo
12:00 pm - 10:05 pmSAN-ISP
7h 05m1 stop
$533Southwest
Find Deal
seg, dez 1 - qui, dez 4
Southwest Logo
1:35 pm - 8:45 pmISP-SAN
10h 10m1 stop
Southwest Logo
10:20 am - 10:05 pmSAN-ISP
8h 45m2 stops
$538Southwest
Find Deal
seg, dez 1 - qui, dez 4
Southwest Logo
5:40 am - 1:20 pmISP-SAN
10h 40m2 stops
Southwest Logo
8:30 am - 11:55 pmSAN-ISP
12h 25m2 stops
$560Southwest
Find Deal
ter, dez 23 - ter, dez 30
Southwest Logo
11:00 am - 8:35 pmISP-SAN
12h 35m1 stop
Southwest Logo
6:20 am - 8:50 pmSAN-ISP
11h 30m2 stops
$658Southwest
Find Deal
sáb, dez 20 - sáb, jan 3
Multiple Airlines Logo
4:58 pm - 12:36 pmISP-SAN
22h 38m2 stops
Multiple Airlines Logo
1:21 pm - 1:45 pmSAN-ISP
21h 24m1 stop
$688Multiple Airlines
Find Deal
qua, nov 19 - dom, nov 23
Breeze Airways Logo
8:21 pm - 12:27 pmISP-SAN
43h 06m3 stops
Breeze Airways Logo
1:21 pm - 1:45 pmSAN-ISP
21h 24m1 stop
$1,079Breeze Airways
Find Deal
qua, nov 19 - dom, nov 23
Breeze Airways Logo
7:36 pm - 12:27 pmISP-SAN
19h 51m1 stop
Breeze Airways Logo
1:12 pm - 6:56 pmSAN-ISP
26h 44m1 stop
$1,144Breeze Airways
Find Deal
ter, nov 25 - sáb, nov 29
Breeze Airways Logo
8:21 pm - 12:27 pmISP-SAN
43h 06m3 stops
Breeze Airways Logo
1:21 pm - 11:00 amSAN-ISP
42h 39m3 stops
$1,151Breeze Airways
Find Deal
qua, nov 19 - dom, nov 23

Southwest flights from Islip, New York to San Diego

Our best Southwest deals on Islip, New York to San Diego flight tickets
Southwest
Dec 23
ISP1:35 pmIslip Long Island
10h 10m
1 stop
SAN8:45 pmSan Diego
Dec 30
SAN6:20 amSan Diego
7h 55m
1 stop
ISP5:15 pmIslip Long Island
$507
Find similar
Southwest
Dec 23
ISP1:35 pmIslip Long Island
10h 10m
1 stop
SAN8:45 pmSan Diego
Dec 30
SAN8:30 amSan Diego
12h 25m
2 stops
ISP11:55 pmIslip Long Island
$528
Find similar
Southwest
Dec 1
ISP1:35 pmIslip Long Island
10h 10m
1 stop
SAN8:45 pmSan Diego
Dec 4
SAN12:00 pmSan Diego
7h 05m
1 stop
ISP10:05 pmIslip Long Island
$533
Find similar

Breeze Airways flights from Islip, New York to San Diego

Our best Breeze Airways deals on Islip, New York to San Diego flight tickets
Breeze Airways
Nov 19
ISP8:21 pmIslip Long Island
43h 06m
3 stops
SAN12:27 pmSan Diego
Nov 23
SAN1:21 pmSan Diego
21h 24m
1 stop
ISP1:45 pmIslip Long Island
$1,079
Find similar
Breeze Airways
Nov 25
ISP7:36 pmIslip Long Island
19h 51m
1 stop
SAN12:27 pmSan Diego
Nov 29
SAN1:12 pmSan Diego
26h 44m
1 stop
ISP6:56 pmIslip Long Island
$1,144
Find similar
Breeze Airways
Nov 19
ISP8:21 pmIslip Long Island
43h 06m
3 stops
SAN12:27 pmSan Diego
Nov 23
SAN1:21 pmSan Diego
42h 39m
3 stops
ISP11:00 amIslip Long Island
$1,151
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to San Diego 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, momondo users made 832,500 searches. Data last updated novembro 5, 2025.
Use the filters below to find and compare flights from Islip, New York to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

ter 12/23

1:35 pm-8:45 pm

1 stop10h 10m

San Diego

ter 12/30

6:20 am-5:15 pm

1 stop7h 55m

$507

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

ter 12/23

1:35 pm-8:45 pm

1 stop10h 10m

San Diego

ter 12/30

8:30 am-11:55 pm

2 stops12h 25m

$528

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

seg 12/1

1:35 pm-8:45 pm

1 stop10h 10m

San Diego

qui 12/4

12:00 pm-10:05 pm

1 stop7h 05m

$533

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

seg 12/1

1:35 pm-8:45 pm

1 stop10h 10m

San Diego

qui 12/4

10:20 am-10:05 pm

2 stops8h 45m

$538

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

ter 12/23

5:40 am-1:20 pm

2 stops10h 40m

San Diego

ter 12/30

8:30 am-11:55 pm

2 stops12h 25m

$560

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

sáb 12/20

11:00 am-8:35 pm

1 stop12h 35m

San Diego

sáb 1/3

6:20 am-8:50 pm

2 stops11h 30m

$658

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

qua 11/19

4:58 pm-12:36 pm

2 stops22h 38m

San Diego

dom 11/23

1:21 pm-1:45 pm

1 stop21h 24m

$688

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

qua 11/19

8:21 pm-12:27 pm

3 stops43h 06m

San Diego

dom 11/23

1:21 pm-1:45 pm

1 stop21h 24m

$1,079

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

ter 11/25

7:36 pm-12:27 pm

1 stop19h 51m

San Diego

sáb 11/29

1:12 pm-6:56 pm

1 stop26h 44m

$1,144

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

qua 11/19

8:21 pm-12:27 pm

3 stops43h 06m

San Diego

dom 11/23

1:21 pm-11:00 am

3 stops42h 39m

$1,151

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Islip, New York to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Islip, New York to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $372. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $470. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $391. Flights at noon are often more expensive with an average ticket price of $437.

Can stopping save me money on Islip, New York to San Diego flights?

You could potentially save up to 67% on your flight if you consider stops on a Islip, New York to San Diego flight.

When to book flights from Islip, New York to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to San Diego (ISP to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to San Diego

Direct flights

None
There are no direct flights from Islip, New York to San Diego. There are no popular flight routes from Islip, New York to San Diego.
Search flight deals

  • How far is Islip Long Island to San Diego by plane?

    Islip Long Island and San Diego are 2467.5 mi apart from one another. Flights usually cover this in 10h 10m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Islip Long Island Airport to San Diego Airport?

    Prices for flights from Islip Long Island Airport to San Diego Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Islip Long Island Airport to San Diego Airport?

  • How old do you have to be to fly from Islip Long Island Airport to San Diego Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Islip, New York to San Diego?

Best airlines flying from Islip, New York to San Diego

Compare and see reviews for airlines that fly from Islip, New York to San Diego with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $350Free CancellationRating
8.0
4,240 reviews
Search Southwest flights

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
National City
Imperial Beach
La Mesa
Poway
Borrego Springs
San Ysidro
Lemon Grove
Alpine
Santee

Why use momondo?

Why should I use momondo to find a flight deal from Islip to San Diego?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from Islip.

Can I find flights from Islip to San Diego with flexible booking policies on momondo?

Yes. All flights to San Diego from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Islip to San Diego?

momondo provides multiple filters to help you find the best flight to San Diego from Islip. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Islip to San Diego right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Islip to San Diego flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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