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Cheap flights from Islip, New York to California from $128

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 California departing on 8/19. 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 California

Cheap round-trip flights

Frontier Logo
8:37 pm - 9:45 amISP-LAS
16h 08m1 stop
Frontier Logo
3:15 pm - 11:41 pmLAS-ISP
29h 26m1 stop
$259Frontier
Find Deal
Sat, Aug 16 - Tue, Aug 19
JetBlue Logo
11:35 am - 8:10 pmISP-LAX
11h 35m1 stop
JetBlue Logo
9:22 pm - 10:50 amLAX-ISP
10h 28m1 stop
$261JetBlue
Find Deal
Fri, Sep 12 - Tue, Sep 16
Frontier Logo
4:45 pm - 9:12 amISP-LAS
19h 27m1 stop
Frontier Logo
3:15 pm - 6:38 pmLAS-ISP
24h 23m1 stop
$265Frontier
Find Deal
Wed, Aug 13 - Wed, Aug 20
Frontier Logo
7:33 pm - 3:29 pmISP-LAS
22h 56m1 stop
Frontier Logo
11:00 pm - 6:32 pmLAS-ISP
16h 32m1 stop
$278Frontier
Find Deal
Sat, Aug 23 - Sun, Aug 24
Frontier Logo
2:05 pm - 9:12 amISP-LAS
22h 07m1 stop
Frontier Logo
3:15 pm - 11:41 pmLAS-ISP
29h 26m1 stop
$279Frontier
Find Deal
Thu, Aug 14 - Tue, Aug 19
JetBlue Logo
11:35 am - 8:10 pmISP-LAX
11h 35m1 stop
JetBlue Logo
9:25 pm - 10:50 amLAX-ISP
10h 25m1 stop
$336JetBlue
Find Deal
Wed, Sep 17 - Fri, Sep 26
Southwest Logo
6:05 am - 1:25 pmISP-SFO
10h 20m1 stop
Southwest Logo
9:05 pm - 11:55 amSFO-ISP
11h 50m1 stop
$338Southwest
Find Deal
Tue, Sep 9 - Tue, Sep 16
Southwest Logo
12:30 pm - 5:35 pmISP-SJC
8h 05m1 stop
Southwest Logo
8:40 am - 10:05 pmSJC-ISP
10h 25m2 stops
$338Southwest
Find Deal
Wed, Aug 27 - Wed, Sep 3
Breeze Airways Logo
7:39 pm - 11:44 amISP-SFO
19h 05m3 stops
Breeze Airways Logo
12:29 pm - 1:15 pmSFO-ISP
21h 46m3 stops
$652Breeze Airways
Find Deal
Thu, Aug 14 - Mon, Aug 18
Breeze Airways Logo
8:21 pm - 12:05 pmISP-SFO
18h 44m2 stops
Breeze Airways Logo
12:50 pm - 7:41 pmSFO-ISP
27h 51m2 stops
$683Breeze Airways
Find Deal
Wed, Sep 3 - Tue, Sep 9

JetBlue flights from Islip, New York to California

Our best JetBlue deals on Islip, New York to California flight tickets
JetBlue
Sep 12
ISP11:35 amIslip Long Island
11h 35m
1 stop
LAX8:10 pmLos Angeles
Sep 16
LAX9:22 pmLos Angeles
10h 28m
1 stop
ISP10:50 amIslip Long Island
$261
Find similar
JetBlue
Sep 17
ISP11:35 amIslip Long Island
11h 35m
1 stop
LAX8:10 pmLos Angeles
Sep 26
LAX9:25 pmLos Angeles
10h 25m
1 stop
ISP10:50 amIslip Long Island
$336
Find similar
JetBlue
Aug 27
ISP12:35 pmIslip Long Island
10h 29m
1 stop
LAX8:04 pmLos Angeles
Sep 1
LAX10:15 pmLos Angeles
10h 26m
1 stop
ISP11:41 amIslip Long Island
$363
Find similar

Frontier flights from Islip, New York to California

Our best Frontier deals on Islip, New York to California flight tickets
Frontier
Aug 16
ISP8:37 pmIslip Long Island
16h 08m
1 stop
LAS9:45 amLas Vegas Harry Reid Intl
Aug 19
LAS3:15 pmLas Vegas Harry Reid Intl
29h 26m
1 stop
ISP11:41 pmIslip Long Island
$259
Find similar
Frontier
Aug 13
ISP4:45 pmIslip Long Island
19h 27m
1 stop
LAS9:12 amLas Vegas Harry Reid Intl
Aug 20
LAS3:15 pmLas Vegas Harry Reid Intl
24h 23m
1 stop
ISP6:38 pmIslip Long Island
$265
Find similar
Frontier
Aug 2
ISP8:37 pmIslip Long Island
27h 45m
1 stop
LAS9:22 pmLas Vegas Harry Reid Intl
Aug 5
LAS3:34 pmLas Vegas Harry Reid Intl
25h 18m
1 stop
ISP7:52 pmIslip Long Island
$267
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to California 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 July 31, 2025.
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

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 8/16

8:37 pm-9:45 am

1 stop16h 08m

Las Vegas Harry Reid Intl

Tue 8/19

3:15 pm-11:41 pm

1 stop29h 26m

$259

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Fri 9/12

11:35 am-8:10 pm

1 stop11h 35m

Los Angeles

Tue 9/16

9:22 pm-10:50 am

1 stop10h 28m

$261

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 8/13

4:45 pm-9:12 am

1 stop19h 27m

Las Vegas Harry Reid Intl

Wed 8/20

3:15 pm-6:38 pm

1 stop24h 23m

$265

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 8/23

7:33 pm-3:29 pm

1 stop22h 56m

Las Vegas Harry Reid Intl

Sun 8/24

11:00 pm-6:32 pm

1 stop16h 32m

$278

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 8/14

2:05 pm-9:12 am

1 stop22h 07m

Las Vegas Harry Reid Intl

Tue 8/19

3:15 pm-11:41 pm

1 stop29h 26m

$279

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Wed 9/17

11:35 am-8:10 pm

1 stop11h 35m

Los Angeles

Fri 9/26

9:25 pm-10:50 am

1 stop10h 25m

$336

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 9/9

6:05 am-1:25 pm

1 stop10h 20m

San Francisco

Tue 9/16

9:05 pm-11:55 am

1 stop11h 50m

$338

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Wed 8/27

12:30 pm-5:35 pm

1 stop8h 05m

San Jose

Wed 9/3

8:40 am-10:05 pm

2 stops10h 25m

$338

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Thu 8/14

7:39 pm-11:44 am

3 stops19h 05m

San Francisco

Mon 8/18

12:29 pm-1:15 pm

3 stops21h 46m

$652

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 9/3

8:21 pm-12:05 pm

2 stops18h 44m

San Francisco

Tue 9/9

12:50 pm-7:41 pm

2 stops27h 51m

$683

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 California from

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

What is the cheapest day to depart on your flight to California?

The cheapest day to depart from Islip, New York to California is on a Thursday. Travelers who choose to depart for California on a Thursday will often find tickets for as low as $748. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to California on Tuesday is $776.

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

The cheapest time of day to fly to California is in the morning when flights can be purchased for as low as $591. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $678 on average. Flights to California from Islip, New York in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You could potentially save up to 13% 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

Best Price Found

$128

Fastest flight time

7h 55m

Direct flights

None

Airports in California

8 airports
The best one-way flight to California from Islip, New York in the past 72 hours is $128. The best round-trip flight deal from Islip, New York to California found on momondo in the last 72 hours is $259.
The fastest flight from Islip, New York to California takes 7h 55m
There are no direct flights from Islip, New York to California. Popular non-direct routes for this connection are Islip Long Island Airport - Las Vegas Harry Reid Intl Airport, Islip Long Island Airport - Los Angeles Airport and Islip Long Island Airport - San Francisco Airport.
There are 8 airports near California: San Diego (SAN), Los Angeles (LAX), Ontario (ONT), Long Beach Municipal (LGB), Santa Ana J. Wayne/Orange Cnty (SNA), San Francisco (SFO), San Jose (SJC), Las Vegas Harry Reid Intl (LAS)
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  • 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?

  • 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
SouthwestPriceFrom $350Free CancellationRating
8.0
4,246 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.

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