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Cheap flights from Islip, New York to San Diego from $152

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 4/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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.
Breeze Airways Logo
11:57 am - 11:24 am
ISP
-
SAN
26h 27m
1 stop
Breeze Airways Logo
12:54 pm - 11:17 am
SAN
-
ISP
19h 23m
1 stop
$379Breeze Airways
Sat, May 16 - Tue, May 19
Southwest Logo
4:40 pm - 10:35 pm
ISP
-
SAN
8h 55m
1 stop
Southwest Logo
10:40 pm - 11:55 am
SAN
-
ISP
10h 15m
2 stops
$400Southwest
Sat, May 16 - Tue, May 19
Southwest Logo
4:40 pm - 10:35 pm
ISP
-
SAN
8h 55m
1 stop
Southwest Logo
6:20 am - 6:30 pm
SAN
-
ISP
9h 10m
1 stop
$410Southwest
Sat, May 2 - Wed, May 6
Southwest Logo
6:00 am - 2:05 pm
ISP
-
SAN
11h 05m
2 stops
Southwest Logo
6:20 am - 6:30 pm
SAN
-
ISP
9h 10m
1 stop
$415Southwest
Sat, May 2 - Wed, May 6
Multiple Airlines Logo
11:00 am - 8:42 am
ISP
-
SAN
24h 42m
2 stops
Multiple Airlines Logo
12:54 pm - 11:17 am
SAN
-
ISP
19h 23m
1 stop
$422Multiple Airlines
Fri, May 15 - Tue, May 19
Southwest Logo
8:35 am - 7:00 pm
ISP
-
SAN
13h 25m
1 stop
Southwest Logo
10:10 pm - 4:35 pm
SAN
-
ISP
15h 25m
1 stop
$427Southwest
Fri, May 15 - Tue, May 19
Southwest Logo
4:30 pm - 11:05 pm
ISP
-
SAN
9h 35m
2 stops
Southwest Logo
6:50 am - 6:30 pm
SAN
-
ISP
8h 40m
2 stops
$457Southwest
Fri, May 15 - Tue, May 19
Southwest Logo
5:25 pm - 10:35 pm
ISP
-
SAN
8h 10m
1 stop
Southwest Logo
9:40 pm - 11:50 am
SAN
-
ISP
11h 10m
1 stop
$482Southwest
Sun, Apr 26 - Thu, Apr 30
Southwest Logo
6:05 am - 2:25 pm
ISP
-
SAN
11h 20m
2 stops
Southwest Logo
10:40 pm - 11:50 am
SAN
-
ISP
10h 10m
2 stops
$497Southwest
Sun, Apr 26 - Thu, Apr 30
Southwest Logo
6:00 am - 2:05 pm
ISP
-
SAN
11h 05m
2 stops
Southwest Logo
10:40 pm - 11:50 am
SAN
-
ISP
10h 10m
2 stops
$499Southwest
Sat, May 2 - Wed, May 6

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
May 16
ISP11:57 amIslip Long Island
26h 27m
1 stop
SAN11:24 amSan Diego
May 19
SAN12:54 pmSan Diego
19h 23m
1 stop
ISP11:17 amIslip Long Island
$379
Breeze Airways
Aug 19
ISP11:57 amIslip Long Island
26h 27m
1 stop
SAN11:24 amSan Diego
Aug 27
SAN12:09 pmSan Diego
22h 19m
1 stop
ISP1:28 pmIslip Long Island
$668
Breeze Airways
Aug 20
ISP7:49 pmIslip Long Island
19h 31m
1 stop
SAN12:20 pmSan Diego
Aug 27
SAN12:09 pmSan Diego
22h 19m
1 stop
ISP1:28 pmIslip Long Island
$718

Southwest flights from Islip, New York to San Diego

Our best Southwest deals on Islip, New York to San Diego flight tickets
Southwest
May 16
ISP4:40 pmIslip Long Island
8h 55m
1 stop
SAN10:35 pmSan Diego
May 19
SAN10:40 pmSan Diego
10h 15m
2 stops
ISP11:55 amIslip Long Island
$400
Southwest
May 2
ISP4:40 pmIslip Long Island
8h 55m
1 stop
SAN10:35 pmSan Diego
May 6
SAN6:20 amSan Diego
9h 10m
1 stop
ISP6:30 pmIslip Long Island
$410
Southwest
May 2
ISP6:00 amIslip Long Island
11h 05m
2 stops
SAN2:05 pmSan Diego
May 6
SAN6:20 amSan Diego
9h 10m
1 stop
ISP6:30 pmIslip Long Island
$415

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 March 27, 2026.
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

Cheapest round-trip

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Sat 5/16

11:57 am-11:24 am

1 stop26h 27m

San Diego

Tue 5/19

12:54 pm-11:17 am

1 stop19h 23m

$379

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Sat 5/16

4:40 pm-10:35 pm

1 stop8h 55m

San Diego

Tue 5/19

10:40 pm-11:55 am

2 stops10h 15m

$400
Quickest round-trip

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Sat 5/2

4:40 pm-10:35 pm

1 stop8h 55m

San Diego

Wed 5/6

6:20 am-6:30 pm

1 stop9h 10m

$410

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Sat 5/2

6:00 am-2:05 pm

2 stops11h 05m

San Diego

Wed 5/6

6:20 am-6:30 pm

1 stop9h 10m

$415

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Fri 5/15

11:00 am-8:42 am

2 stops24h 42m

San Diego

Tue 5/19

12:54 pm-11:17 am

1 stop19h 23m

$422

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Fri 5/15

8:35 am-7:00 pm

1 stop13h 25m

San Diego

Tue 5/19

10:10 pm-4:35 pm

1 stop15h 25m

$427

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Fri 5/15

4:30 pm-11:05 pm

2 stops9h 35m

San Diego

Tue 5/19

6:50 am-6:30 pm

2 stops8h 40m

$457

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Sun 4/26

5:25 pm-10:35 pm

1 stop8h 10m

San Diego

Thu 4/30

9:40 pm-11:50 am

1 stop11h 10m

$482

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Sun 4/26

6:05 am-2:25 pm

2 stops11h 20m

San Diego

Thu 4/30

10:40 pm-11:50 am

2 stops10h 10m

$497

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Sat 5/2

6:00 am-2:05 pm

2 stops11h 05m

San Diego

Wed 5/6

10:40 pm-11:50 am

2 stops10h 10m

$499

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 $369. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $495. 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 $365. Flights in the morning are often more expensive with an average ticket price of $410.

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

You could potentially save up to 7% 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

Fastest flight time

8h 10m

Direct flights

None
The fastest flight from Islip, New York to San Diego takes 8h 10m
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 8h 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
4,331 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
Poway
San Ysidro
Imperial Beach
La Mesa
Borrego Springs
Alpine
Santee
Lemon Grove

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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