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$100+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
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 March 10, 2026.

This CheapOair deal was found by Cheapflights users on 3/6. 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 4/125:45 am
ISP
-
LAS
1 stop31h 40m
Frontier
Wed 4/1511:54 pm
LAS
-
ISP
1 stop30h 19m
Frontier
Deal found 3/6$200
This Expedia deal was found by Cheapflights users on 3/10. 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.
Tue 4/149:38 am
ISP
-
LAS
1 stop28h 37m
Frontier
Sat 4/1811:54 pm
LAS
-
ISP
1 stop30h 19m
Frontier
Deal found 3/10$220
This CheapOair deal was found by Cheapflights users on 3/5. 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 4/95:30 am
ISP
-
LAS
1 stop31h 25m
Frontier
Thu 4/1611:29 pm
LAS
-
ISP
1 stop17h 07m
Frontier
Deal found 3/5$221
This CheapOair deal was found by Cheapflights users on 3/9. 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.
Fri 5/14:07 pm
ISP
-
LAX
1 stop29h 59m
Frontier
Sun 5/108:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 3/9$221
This CheapOair deal was found by Cheapflights users on 3/5. 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 5/174:07 pm
ISP
-
LAS
1 stop9h 29m
Frontier
Fri 5/2211:59 pm
LAS
-
ISP
1 stop30h 09m
Frontier
Deal found 3/5$225
This CheapOair deal was found by Cheapflights users on 3/7. 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.
Tue 9/110:03 am
ISP
-
LAX
1 stop9h 40m
Frontier
Wed 9/210:49 pm
LAX
-
ISP
1 stop31h 19m
Frontier
Deal found 3/7$230
This CheapOair deal was found by Cheapflights users on 3/8. 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.
Wed 5/2710:03 am
ISP
-
SFO
1 stop15h 49m
Frontier
Sun 5/3111:59 pm
SFO
-
ISP
1 stop30h 09m
Frontier
Deal found 3/8$242
This CheapOair deal was found by Cheapflights users on 3/5. 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 5/2810:03 am
ISP
-
LAS
1 stop15h 26m
Frontier
Sun 5/3111:59 pm
LAS
-
ISP
1 stop30h 09m
Frontier
Deal found 3/5$242
This CheapOair deal was found by Cheapflights users on 3/9. 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.
Mon 3/301:22 pm
ISP
-
LAS
1 stop12h 27m
Frontier
Thu 4/211:59 pm
LAS
-
ISP
1 stop7h 57m
Frontier
Deal found 3/9$244
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/125:45 am
ISP
-
LAS
1 stop31h 40m
Frontier
Thu 4/1611:29 pm
LAS
-
ISP
1 stop17h 07m
Frontier
Deal found 3/9$245
This CheapOair deal was found by Cheapflights users on 3/9. 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.
Thu 4/164:07 pm
ISP
-
LAX
1 stop29h 59m
Frontier
Sun 4/199:04 pm
LAX
-
ISP
1 stop9h 09m
Frontier
Deal found 3/9$245
This CheapOair deal was found by Cheapflights users on 3/6. 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 5/184:07 pm
ISP
-
LAS
1 stop9h 29m
Frontier
Thu 5/2111:59 pm
LAS
-
ISP
1 stop30h 09m
Frontier
Deal found 3/6$246

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(CheapOair)

One-way from

$100
(Frontier)

Popular in

December

Cheapest in

January

Average price

$376
Provider with most accurate pricing for New York (NYC)-Los Angeles Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Los Angeles 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. 2% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 10, 2026.
Use the filters below to find and compare flights from Islip 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

Fri 5/29

10:03 am-10:29 pm

1 stop15h 26m

Las Vegas Harry Reid Intl

Sun 5/31

11:59 pm-9:08 am

1 stop30h 09m

$245

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 6/22

10:03 am-4:43 pm

1 stop9h 40m

Los Angeles Los Angeles

Mon 6/22

10:49 pm-9:08 am

1 stop31h 19m

$330

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Tue 6/9

10:03 am-4:43 pm

1 stop9h 40m

Los Angeles Los Angeles

Tue 6/16

10:49 pm-9:08 am

1 stop31h 19m

$330

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 4/14

9:00 am-3:50 pm

2 stops9h 50m

Las Vegas Harry Reid Intl

Sat 4/18

10:45 am-11:20 pm

2 stops9h 35m

$356

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 4/15

9:00 am-3:35 pm

2 stops9h 35m

Las Vegas Harry Reid Intl

Mon 4/20

11:40 pm-11:55 am

2 stops9h 15m

$367

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Wed 4/8

12:30 pm-7:35 pm

2 stops10h 05m

San Diego

Tue 4/14

6:20 am-6:30 pm

1 stop9h 10m

$372

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Thu 4/9

12:30 pm-7:00 pm

1 stop9h 30m

San Diego

Wed 4/15

10:10 pm-12:05 pm

1 stop10h 55m

$379

IslipSanta Ana

ISP - SNA

ISPSNA

Islip Long Island

Wed 4/15

12:30 pm-8:55 pm

2 stops11h 25m

Santa Ana J. Wayne/Orange Cnty

Sat 4/18

6:45 am-10:40 pm

2 stops12h 55m

$383

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Thu 4/16

4:30 pm-11:20 pm

1 stop9h 50m

San Francisco

Mon 4/20

9:15 pm-11:55 am

1 stop11h 40m

$384

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Wed 5/13

12:30 pm-6:55 pm

1 stop9h 25m

San Diego

Mon 5/18

10:40 pm-11:55 am

2 stops10h 15m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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, November is the cheapest month in which you can book a flight from Islip, New York to California (average of $72). Flying from Islip, New York to California in March is currently the most expensive (average of $158). 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.

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 March 10, 2026.
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
4,317 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

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
8.0
Very good
4,317 reviews
Southwest
8.0
Very good
4,317 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

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 9h 50m. Fly via Frontier or Southwest to get the fastest option. The distance from Islip, New York to California is about 2275 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 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, November is the cheapest month in which you can book a flight from Islip, New York to California (average of $72). Flying from Islip, New York to California in March is currently the most expensive (average of $158). 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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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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$344Average$481FlexibilityNo cancel feeOn-time63%

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