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$65+ Cheap flights from Islip, NY (ISP) to California

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
nov. 27 — déc. 41
jeu. 11/27
jeu. 12/4
1 adult, Economy
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Cheap flight deals from Islip to California

Keep the following information in mind while searching for Islip to California flight deals. Data was last updated octobre 28, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$65
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$371
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From Islip Long Island to California
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One-way flight from Islip Long Island to California
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Highest demand for flights based on searches. 7% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Islip to California

Cheapest flights from Islip to California
Explore the most affordable flight options available from Islip to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octobre 28, 2025.

This CheapOair deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/174:58 pmISP - LAS
1 stop20h 09mFrontier
mar. 11/1811:02 pmLAS - ISP
1 stop8h 35mFrontier
Deal found 10/28$130
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/174:58 pmISP - LAS
1 stop20h 09mFrontier
mer. 11/193:59 pmLAS - ISP
1 stop14h 08mFrontier
Deal found 10/26$139
This CheapOair deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 11/136:37 pmISP - LAS
1 stop18h 30mFrontier
mer. 11/193:59 pmLAS - ISP
1 stop14h 08mFrontier
Deal found 10/28$150
This CheapOair deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/410:19 amISP - LAS
1 stop26h 24mFrontier
lun. 12/810:20 pmLAS - ISP
1 stop18h 14mFrontier
Deal found 10/27$170
This CheapOair deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/104:58 pmISP - LAS
1 stop20h 09mFrontier
lun. 11/1711:02 pmLAS - ISP
1 stop15h 40mFrontier
Deal found 10/28$176
This CheapOair deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 11/136:37 pmISP - LAS
1 stop18h 30mFrontier
lun. 11/1711:02 pmLAS - ISP
1 stop15h 40mFrontier
Deal found 10/26$196
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/174:58 pmISP - LAS
1 stop20h 09mFrontier
jeu. 11/2011:00 pmLAS - ISP
1 stop30h 02mFrontier
Deal found 10/28$205
This CheapOair deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 11/124:58 pmISP - LAS
1 stop20h 09mFrontier
mer. 11/193:59 pmLAS - ISP
1 stop14h 08mFrontier
Deal found 10/28$206
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 12/610:19 amISP - LAS
2 stops16h 27mFrontier
mar. 12/910:20 pmLAS - ISP
1 stop21h 24mFrontier
Deal found 10/27$209
This CheapOair deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 11/2010:02 amISP - LAS
1 stop11h 06mFrontier
lun. 11/2411:00 pmLAS - ISP
1 stop8h 18mFrontier
Deal found 10/27$211
This CheapOair deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/46:27 pmISP - LAS
1 stop18h 40mFrontier
mar. 11/1111:02 pmLAS - ISP
1 stop8h 35mFrontier
Deal found 10/28$222
This CheapOair deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 11/2010:02 amISP - LAX
1 stop11h 21mFrontier
lun. 11/2411:15 pmLAX - ISP
1 stop17h 59mFrontier
Deal found 10/26$243

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip 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, Cheapflights users made 2,558,603 searches. Data last updated octobre 28, 2025.
Use the filters below to find and compare flights from Islip to California that are best for you.

Fly from

Islip

Fly to

California

Route

Depart

Return

Price

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

mer. 11/12

4:58 pm-10:07 am

1 stop20h 09m

Las Vegas Harry Reid Intl

mer. 11/19

3:59 pm-9:07 am

1 stop14h 08m

$176

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

sam. 12/6

10:19 am-11:46 pm

2 stops16h 27m

Las Vegas Harry Reid Intl

mar. 12/9

10:20 pm-10:44 pm

1 stop21h 24m

$209

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

lun. 11/17

4:58 pm-10:07 am

1 stop20h 09m

Las Vegas Harry Reid Intl

lun. 11/24

11:00 pm-10:18 am

1 stop8h 18m

$211

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

lun. 12/1

9:02 am-10:23 am

1 stop28h 21m

Las Vegas Harry Reid Intl

lun. 12/8

10:20 pm-7:34 pm

1 stop18h 14m

$231

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

mer. 11/19

4:58 pm-6:08 pm

1 stop28h 10m

Las Vegas Harry Reid Intl

mar. 11/25

7:00 am-10:18 am

1 stop24h 18m

$232

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

mer. 11/12

4:58 pm-9:30 pm

2 stops31h 32m

Las Vegas Harry Reid Intl

ven. 11/14

11:02 pm-10:37 am

1 stop8h 35m

$236

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

jeu. 11/20

10:02 am-6:23 pm

1 stop11h 21m

Los Angeles

lun. 11/24

11:15 pm-8:14 pm

1 stop17h 59m

$243

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

jeu. 12/4

10:19 am-9:43 am

1 stop26h 24m

Las Vegas Harry Reid Intl

dim. 12/7

10:20 pm-9:13 am

1 stop7h 53m

$246

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

sam. 11/8

4:58 pm-10:07 am

1 stop20h 09m

Las Vegas Harry Reid Intl

mar. 11/11

11:02 pm-10:37 am

1 stop8h 35m

$252

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

mer. 11/19

4:58 pm-6:23 pm

1 stop28h 25m

Los Angeles

lun. 11/24

11:15 pm-8:14 pm

1 stop17h 59m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 60 results
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Best time to book a flight from Islip to California

Have a flexible travel schedule? Discover the best time to fly to California from Islip with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Islip to California

What is the cheapest month to book a flight from Islip, New York to California?

Currently, February is the cheapest month in which you can book a flight from Islip, New York to California (average of $71). Flying from Islip, New York to California in October is currently the most expensive (average of $149). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ISP to CA?

Find hourly flight availability from Islip to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octobre 28, 2025.

It’s typically best to fly out from Islip, New York to California in the evening. Doing so could potentially save you 57% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated octobre 28, 2025.
Read through reviews of airlines operating flights from Islip to California, such as Southwest. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,240 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Islip to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Islip to California?

    Most people fly from Islip Long Island (ISP) if they book a flight from Islip to California. Islip Long Island is conveniently located just 7.2 mi from Islip’s city center.

  • How long is the flight from Islip, New York to California?

    There are many flights that can get you from Islip, New York to California in 10h 05m. Fly via Frontier, JetBlue, or Southwest to get the fastest option. The distance from Islip, New York to California is about 2611 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Islip, New York to California?

    The most popular route from Islip, New York to California is Islip Long Island - Las Vegas Harry Reid Intl. You may also consider Islip Long Island - Los Angeles or Islip Long Island - San Francisco.

  • Can I find deals for flights from Islip to California that include hotel bookings?

    Yes. In addition to deals on Islip to California flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to California?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to California.

  • Can I find deals for business class flights from Islip to California?

    Yes. Cheapflights offers flight deals from Islip to California by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to California?

    Currently, February is the cheapest month in which you can book a flight from Islip, New York to California (average of $71). Flying from Islip, New York to California in October is currently the most expensive (average of $149). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Islip to California

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Islip to California

Discover the top airline that operate flights from Islip to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated octobre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$350Average$513FlexibilityNo cancel feeOn-time63%

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