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$98+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This CheapOair deal was found by Cheapflights users on 12/11. 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.
Sat 12/1310:19 amISP - LAS
1 stop26h 24mFrontier
Tue 1/1310:33 pmLAS - ISP
1 stop21h 13mFrontier
Deal found 12/11$254
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Mon 12/1510:19 amISP - LAS
1 stop27h 04mFrontier
Thu 12/183:54 pmLAS - ISP
1 stop17h 48mFrontier
Deal found 12/11$285
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Sun 12/212:04 pmISP - LAS
1 stop22h 11mFrontier
Wed 12/2410:20 pmLAS - ISP
1 stop10h 05mFrontier
Deal found 12/10$289
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Sat 12/1310:19 amISP - LAS
1 stop26h 24mFrontier
Tue 12/1610:20 pmLAS - ISP
1 stop21h 24mFrontier
Deal found 12/11$305
This Frontier deal was found by Cheapflights users on 12/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:35 pmISP - LAS
1 stop15h 40mFrontier
Wed 12/3110:20 pmLAS - ISP
1 stop10h 05mFrontier
Deal found 12/10$312
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Sat 12/206:40 pmISP - LAS
1 stop17h 58mFrontier
Tue 12/2310:20 pmLAS - ISP
1 stop15h 17mFrontier
Deal found 12/11$325
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Fri 12/128:29 pmISP - LAS
1 stop16h 14mFrontier
Tue 12/1610:20 pmLAS - ISP
1 stop21h 24mFrontier
Deal found 12/11$334
This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:35 pmISP - LAX
1 stop24h 28mFrontier
Tue 12/3011:59 pmLAX - ISP
1 stop13h 38mFrontier
Deal found 12/10$353
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Fri 12/128:29 pmISP - LAS
1 stop16h 14mFrontier
Mon 12/1510:20 pmLAS - ISP
1 stop18h 14mFrontier
Deal found 12/11$354
This CheapOair deal was found by Cheapflights users on 12/9. 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.
Sun 12/218:35 pmISP - LAX
1 stop24h 28mFrontier
Wed 12/3111:59 pmLAX - ISP
1 stop8h 26mFrontier
Deal found 12/9$358
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Fri 12/191:27 pmISP - LAS
1 stop21h 58mFrontier
Sat 1/109:32 pmLAS - ISP
1 stop19h 13mFrontier
Deal found 12/11$363
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Thu 12/1812:20 pmISP - LAS
1 stop23h 59mFrontier
Tue 12/2310:20 pmLAS - ISP
1 stop15h 17mFrontier
Deal found 12/11$364

Find flight deals from Islip to California

Keep the following information in mind while searching for Islip to California flight deals. Data was last updated December 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$182
(Expedia)

One-way from

$98
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$472
Provider with most accurate pricing for New York (NYC)-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Los Angeles flights.
Search Deals
From Islip Long Island to California
Search Deals
One-way flight from Islip Long Island to California
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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

Sat 2/21

8:23 pm-10:15 am

1 stop16h 52m

Las Vegas Harry Reid Intl

Tue 2/24

11:03 pm-1:13 pm

1 stop11h 10m

$183

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 1/5

8:24 pm-9:43 am

1 stop16h 19m

Las Vegas Harry Reid Intl

Fri 1/9

10:45 pm-7:08 pm

1 stop17h 23m

$218

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Fri 2/20

3:34 pm-10:30 am

1 stop21h 56m

Las Vegas Harry Reid Intl

Tue 2/24

11:03 pm-1:13 pm

1 stop11h 10m

$218

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 3/8

5:08 pm-11:30 am

1 stop21h 22m

Las Vegas Harry Reid Intl

Thu 3/12

11:59 pm-12:47 pm

1 stop9h 48m

$218

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 1/11

8:40 pm-10:08 am

1 stop16h 28m

Las Vegas Harry Reid Intl

Wed 1/14

10:33 pm-7:03 pm

1 stop17h 30m

$218

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 2/25

2:03 pm-10:15 am

1 stop23h 12m

Las Vegas Harry Reid Intl

Wed 3/4

11:03 pm-2:39 pm

1 stop12h 36m

$237

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 1/6

12:55 pm-9:43 am

1 stop23h 48m

Las Vegas Harry Reid Intl

Tue 1/13

10:33 pm-10:46 pm

1 stop21h 13m

$258

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 1/8

8:40 pm-9:43 am

1 stop16h 03m

Las Vegas Harry Reid Intl

Sun 1/11

10:45 pm-7:51 pm

1 stop18h 06m

$269

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 12/15

10:19 am-10:23 am

1 stop27h 04m

Las Vegas Harry Reid Intl

Thu 12/18

3:54 pm-12:42 pm

1 stop17h 48m

$285

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 12/20

6:40 pm-9:38 am

1 stop17h 58m

Las Vegas Harry Reid Intl

Tue 12/23

10:20 pm-4:37 pm

1 stop15h 17m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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 July is currently the most expensive (average of $141). 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 December 12, 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 December 12, 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
7.9
Good
4,253 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Food

7.0

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
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Food

7.0

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 8h 25m. Fly via Frontier or Southwest to get the fastest option. The distance from Islip, New York to California is about 2503 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 Diego.

  • 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 July is currently the most expensive (average of $141). 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

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$344Average$486FlexibilityNo cancel feeOn-time63%

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