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

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

What airlines fly to California?

United Airlines, JetBlue and Delta are the top three most popular airlines that fly to California from Islip, New York according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to California. Keep in mind that there are 10 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Islip Long Island Airport to California?

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

How many operators does momondo search for flights from Islip Long Island Airport to California?

As of March 2026, there are 2 operators available to choose from for flights from Islip Long Island Airport to California.

How old do you have to be to fly from Islip Long Island Airport to California?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to California.

What documentation or ID do you need to fly to California?

The travel and health documents required for your trip to California can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at California. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$80 Cheap Flights from Islip to California in 2026

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Find the cheapest flights from Islip, New York to California

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:38 am - 11:15 am

ISP

LAS

28h 37m

1 stop

11:54 pm - 9:33 am

LAS

ISP

30h 39m

1 stop

$160Frontier

Tue, Apr 14 - Tue, Apr 21

6:29 pm - 9:50 am

ISP

LAS

18h 21m

1 stop

11:54 pm - 9:13 am

LAS

ISP

30h 19m

1 stop

$180Frontier

Sat, Apr 11 - Sat, Apr 18

4:07 pm - 10:41 pm

ISP

LAS

9h 34m

1 stop

11:54 pm - 9:33 am

LAS

ISP

30h 39m

1 stop

$185Frontier

Sun, Apr 26 - Tue, Apr 28

11:00 am - 6:27 pm

ISP

LAX

10h 27m

1 stop

11:21 pm - 11:00 am

LAX

ISP

8h 39m

1 stop

$185Frontier

Thu, May 7 - Mon, May 11

11:00 am - 6:27 pm

ISP

LAX

10h 27m

1 stop

12:02 pm - 10:03 am

LAX

ISP

19h 01m

2 stops

$227Multiple Airlines

Wed, Jun 3 - Wed, Jun 10

4:10 pm - 9:25 pm

ISP

SFO

8h 15m

1 stop

11:25 pm - 11:55 am

SFO

ISP

9h 30m

2 stops

$327Southwest

Tue, Apr 21 - Tue, Apr 28

4:10 pm - 9:25 pm

ISP

SFO

8h 15m

1 stop

9:15 pm - 1:50 pm

SFO

ISP

13h 35m

1 stop

$328Southwest

Tue, Apr 21 - Tue, Apr 28

11:57 am - 11:24 am

ISP

SAN

26h 27m

1 stop

12:54 pm - 11:17 am

SAN

ISP

19h 23m

1 stop

$379Breeze Airways

Sat, May 16 - Tue, May 19

11:00 am - 8:42 am

ISP

SAN

24h 42m

2 stops

12:54 pm - 11:17 am

SAN

ISP

19h 23m

1 stop

$422Multiple Airlines

Fri, May 15 - Tue, May 19

2:28 pm - 12:25 pm

ISP

SNA

24h 57m

2 stops

12:41 pm - 11:16 am

SNA

ISP

43h 35m

3 stops

$993Breeze Airways

Fri, May 29 - Sun, May 31

Southwest flights from Islip, New York to California

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

Southwest

Apr 18

ISP12:15 pmIslip Long Island

9h 15m

1 stop

LAS6:30 pmLas Vegas Harry Reid Intl

Apr 21

LAS10:15 pmLas Vegas Harry Reid Intl

12h 35m

1 stop

ISP1:50 pmIslip Long Island

$286

Southwest

Apr 18

ISP9:20 amIslip Long Island

11h 20m

2 stops

LAS5:40 pmLas Vegas Harry Reid Intl

Apr 21

LAS6:50 amLas Vegas Harry Reid Intl

8h 40m

2 stops

ISP6:30 pmIslip Long Island

$291

Southwest

Apr 24

ISP12:30 pmIslip Long Island

8h 15m

1 stop

LAX5:45 pmLos Angeles

Apr 27

LAX11:30 pmLos Angeles

9h 25m

2 stops

ISP11:55 amIslip Long Island

$302

Frontier flights from Islip, New York to California

Our best Frontier deals on Islip, New York to California flight tickets

Frontier

Apr 14

ISP9:38 amIslip Long Island

28h 37m

1 stop

LAS11:15 amLas Vegas Harry Reid Intl

Apr 21

LAS11:54 pmLas Vegas Harry Reid Intl

30h 39m

1 stop

ISP9:33 amIslip Long Island

$160

Frontier

Apr 11

ISP6:29 pmIslip Long Island

18h 21m

1 stop

LAS9:50 amLas Vegas Harry Reid Intl

Apr 18

LAS11:54 pmLas Vegas Harry Reid Intl

30h 19m

1 stop

ISP9:13 amIslip Long Island

$180

Frontier

May 7

ISP11:00 amIslip Long Island

10h 27m

1 stop

LAX6:27 pmLos Angeles

May 11

LAX11:21 pmLos Angeles

8h 39m

1 stop

ISP11:00 amIslip Long Island

$185

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 4/14

9:38 am-11:15 am

1 stop28h 37m

Las Vegas Harry Reid Intl

Tue 4/21

11:54 pm-9:33 am

1 stop30h 39m

$160

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 4/11

6:29 pm-9:50 am

1 stop18h 21m

Las Vegas Harry Reid Intl

Sat 4/18

11:54 pm-9:13 am

1 stop30h 19m

$180

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 4/26

4:07 pm-10:41 pm

1 stop9h 34m

Las Vegas Harry Reid Intl

Tue 4/28

11:54 pm-9:33 am

1 stop30h 39m

$185

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 5/7

11:00 am-6:27 pm

1 stop10h 27m

Los Angeles

Mon 5/11

11:21 pm-11:00 am

1 stop8h 39m

$185

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Wed 6/3

11:00 am-6:27 pm

1 stop10h 27m

Los Angeles

Wed 6/10

12:02 pm-10:03 am

2 stops19h 01m

$227

Quickest round-trip

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 4/21

4:10 pm-9:25 pm

1 stop8h 15m

San Francisco

Tue 4/28

11:25 pm-11:55 am

2 stops9h 30m

$327

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 4/21

4:10 pm-9:25 pm

1 stop8h 15m

San Francisco

Tue 4/28

9:15 pm-1:50 pm

1 stop13h 35m

$328

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

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

IslipSanta Ana

ISP - SNA

ISPSNA

Islip Long Island

Fri 5/29

2:28 pm-12:25 pm

2 stops24h 57m

Santa Ana J. Wayne/Orange Cnty

Sun 5/31

12:41 pm-11:16 am

3 stops43h 35m

$993

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 California

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

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

You could potentially save up to 12% on your flight if you consider stops on a Islip, New York to California flight.

Cheap Islip, New York to California flight deals and tips

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

Fastest flight time	7h 30m
Direct flights	None

The fastest flight from Islip, New York to California takes 7h 30m

There are no direct flights from Islip, New York to California. There are no popular flight routes from Islip, New York to California.

Search flight deals

When did momondo last update prices for flights from Islip Long Island Airport to California?
Prices for flights from Islip Long Island Airport to California are refreshed on a daily basis.
How many operators does momondo search for flights from Islip Long Island Airport to California?
As of March 2026, there are 2 operators available to choose from for flights from Islip Long Island Airport to California.
How old do you have to be to fly from Islip Long Island Airport to California?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to California.
What documentation or ID do you need to fly to California?
The travel and health documents required for your trip to California can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at California. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Islip, New York to California

Compare and see reviews for airlines that fly from Islip, New York to California with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $350	Free Cancellation	Rating 8.0 4,333 reviews		Search Southwest flights

Why use momondo?

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

It is quick and easy to find Islip to California flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to California that suits you.

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

All flight searches from Islip to California on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Islip to California?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Islip to California.

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

Yes. momondo can track prices for Islip to California 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.