What airlines fly to San Diego?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to San Diego from Islip, New York according to our data. United Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 8 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Islip Long Island to San Diego?

Southwest, Breeze Airways, and Frontier are the most popular carriers operating from Islip Long Island to San Diego

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?

As of September 2026, there is 1 operator available to choose from 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.

$212 Cheap Flights from Islip, New York to San Diego in 2026

Find the cheapest flights from Islip, New York to San Diego

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:05 am - 10:50 amISP Islip Long Island-SAN San Diego

7h 45m1 stop Baltimore/Washington

9:20 am - 9:05 pmSAN San Diego-ISP Islip Long Island

8h 45m1 stop Orlando

$353Southwest

Thu, Dec 3 - Tue, Dec 8

4:05 pm - 8:55 pmISP Islip Long Island-SAN San Diego

7h 50m1 stop Baltimore/Washington

9:15 am - 9:40 pmSAN San Diego-ISP Islip Long Island

9h 25m2 stops Austin Bergstrom Baltimore/Washington

$358Southwest

Thu, Dec 3 - Tue, Dec 8

6:05 am - 1:30 pmISP Islip Long Island-SAN San Diego

10h 25m2 stops Baltimore/Washington Denver Intl

8:15 am - 9:40 pmSAN San Diego-ISP Islip Long Island

10h 25m2 stops Las Vegas Harry Reid Intl Baltimore/Washington

$363Southwest

Thu, Dec 3 - Tue, Dec 8

4:05 pm - 10:50 pmISP Islip Long Island-SAN San Diego

9h 45m1 stop Baltimore/Washington

10:40 pm - 10:15 amSAN San Diego-ISP Islip Long Island

8h 35m1 stop Baltimore/Washington

$380Southwest

Thu, Sep 24 - Tue, Sep 29

4:05 pm - 10:50 pmISP Islip Long Island-SAN San Diego

9h 45m1 stop Baltimore/Washington

10:40 pm - 12:10 pmSAN San Diego-ISP Islip Long Island

10h 30m2 stops Chicago Midway Baltimore/Washington

$385Southwest

Thu, Sep 24 - Tue, Sep 29

3:20 pm - 7:35 pmISP Islip Long Island-SAN San Diego

7h 15m1 stop Baltimore/Washington

6:30 am - 11:55 pmSAN San Diego-ISP Islip Long Island

14h 25m1 stop Orlando

$428Southwest

Tue, Sep 29 - Sun, Oct 4

3:20 pm - 7:35 pmISP Islip Long Island-SAN San Diego

7h 15m1 stop Baltimore/Washington

9:50 am - 11:55 pmSAN San Diego-ISP Islip Long Island

11h 05m2 stops Omaha Eppley Airfield Orlando

$428Southwest

Tue, Sep 29 - Sun, Oct 4

12:55 pm - 7:55 pmISP Islip Long Island-SAN San Diego

10h 00m2 stops Baltimore/Washington Phoenix Sky Harbor Intl

9:50 am - 11:55 pmSAN San Diego-ISP Islip Long Island

11h 05m2 stops Omaha Eppley Airfield Orlando

$433Southwest

Tue, Sep 29 - Sun, Oct 4

11:52 am - 12:37 pmISP Islip Long Island-SAN San Diego

27h 45m1 stop Raleigh-Durham

4:54 pm - 4:58 pmSAN San Diego-ISP Islip Long Island

21h 04m2 stops Denver Intl Orlando

$563Multiple Airlines

Mon, Sep 21 - Fri, Sep 25

3:02 pm - 12:37 pmISP Islip Long Island-SAN San Diego

24h 35m1 stop Raleigh-Durham

12:37 pm - 2:22 pmSAN San Diego-ISP Islip Long Island

22h 45m1 stop Raleigh-Durham

$698Breeze Airways

Mon, Nov 16 - Thu, Nov 19

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Southwest flights from Islip, New York to San Diego

Our best Southwest deals on Islip, New York to San Diego flight tickets

Southwest

Sep 24

ISP4:05 pmIslip Long Island

9h 45m

1 stop

SAN10:50 pmSan Diego

Sep 29

SAN10:40 pmSan Diego

8h 35m

1 stop

ISP10:15 amIslip Long Island

$380

Southwest

Sep 24

ISP4:05 pmIslip Long Island

9h 45m

1 stop

SAN10:50 pmSan Diego

Sep 29

SAN10:40 pmSan Diego

10h 30m

2 stops

ISP12:10 pmIslip Long Island

$385

Southwest

Sep 29

ISP3:20 pmIslip Long Island

7h 15m

1 stop

SAN7:35 pmSan Diego

Oct 4

SAN9:50 amSan Diego

11h 05m

2 stops

ISP11:55 pmIslip Long Island

$428

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 16

ISP3:02 pmIslip Long Island

24h 35m

1 stop

SAN12:37 pmSan Diego

Nov 19

SAN12:37 pmSan Diego

22h 45m

1 stop

ISP2:22 pmIslip Long Island

$698

Breeze Airways

Oct 26

ISP3:02 pmIslip Long Island

24h 35m

1 stop

SAN12:37 pmSan Diego

Nov 3

SAN1:22 pmSan Diego

18h 58m

1 stop

ISP11:20 amIslip Long Island

$708

Breeze Airways

Oct 19

ISP3:02 pmIslip Long Island

24h 35m

1 stop

SAN12:37 pmSan Diego

Oct 25

SAN12:37 pmSan Diego

22h 45m

1 stop

ISP2:22 pmIslip Long Island

$738

momondo Fare Finder

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

Quickest round-trip

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Thu 12/3

6:05 am-10:50 am

1 stop7h 45m

San Diego

Tue 12/8

9:20 am-9:05 pm

1 stop8h 45m

$353

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Thu 12/3

4:05 pm-8:55 pm

1 stop7h 50m

San Diego

Tue 12/8

9:15 am-9:40 pm

2 stops9h 25m

$358

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Thu 12/3

6:05 am-1:30 pm

2 stops10h 25m

San Diego

Tue 12/8

8:15 am-9:40 pm

2 stops10h 25m

$363

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Thu 9/24

4:05 pm-10:50 pm

1 stop9h 45m

San Diego

Tue 9/29

10:40 pm-10:15 am

1 stop8h 35m

$380

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Thu 9/24

4:05 pm-10:50 pm

1 stop9h 45m

San Diego

Tue 9/29

10:40 pm-12:10 pm

2 stops10h 30m

$385

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Tue 9/29

3:20 pm-7:35 pm

1 stop7h 15m

San Diego

Sun 10/4

6:30 am-11:55 pm

1 stop14h 25m

$428

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Tue 9/29

3:20 pm-7:35 pm

1 stop7h 15m

San Diego

Sun 10/4

9:50 am-11:55 pm

2 stops11h 05m

$428

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Tue 9/29

12:55 pm-7:55 pm

2 stops10h 00m

San Diego

Sun 10/4

9:50 am-11:55 pm

2 stops11h 05m

$433

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Mon 9/21

11:52 am-12:37 pm

1 stop27h 45m

San Diego

Fri 9/25

4:54 pm-4:58 pm

2 stops21h 04m

$563

IslipSan Diego

ISP Islip Long Island - SAN San Diego

ISPSAN

Islip Long Island

Mon 11/16

3:02 pm-12:37 pm

1 stop24h 35m

San Diego

Thu 11/19

12:37 pm-2:22 pm

1 stop22h 45m

$698

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $392. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $527. 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 at noon when flights can be purchased for as low as $374. Flights in the morning are often more expensive with an average ticket price of $442.

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

You could potentially save up to 28% 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

Best Price Found	$212
Fastest flight time	23h 09m
Direct flights	None

The best one-way flight to San Diego from Islip, New York in the past 72 hours is $212. The best round-trip flight deal from Islip, New York to San Diego found on momondo in the last 72 hours is $353.

The fastest flight from Islip, New York to San Diego takes 23h 09m

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

Frequently asked questions about flying from Islip, New York to San Diego

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 23h 09m, 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?
As of September 2026, there is 1 operator available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Islip, New York to San Diego is Southwest (100% of total bookings).

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
Southwest	PriceFrom $323	Free Cancellation	Rating 8.0 4,199 reviews		Search Southwest flights

Chula Vista

El Cajon

Coronado

National City

La Mesa

Julian

Poway

San Ysidro

Imperial Beach

Santee

Alpine

Lemon Grove

Borrego Springs

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.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Wed 10/7

Wed 10/14

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Islip, New York

Complete your trip

Feeling lucky

Cheap flights from Islip, New York to San Diego from $212

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 10/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Islip, New York to San Diego

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Southwest flights from Islip, New York to San Diego

Our best Southwest deals on Islip, New York to San Diego flight tickets

Breeze Airways flights from Islip, New York to San Diego

Our best Breeze Airways deals on Islip, New York to San Diego flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to San Diego that are best for you.

See travel insights to San Diego from

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

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

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

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

What is the cheapest airline that flies from Islip Long Island to San Diego?

What airlines fly to San Diego?

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

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near San Diego?

Why use momondo?

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California

Fly your favorite airline to San Diego

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to San Diego

List of cabin classes available on flights landing in San Diego. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Islip, New York

According to popular flight searches on momondo this year

Complete your trip to San Diego

Explore popular destinations other users love

According to popular flight searches on momondo this year