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$111+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
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 May 11, 2026.

This CheapOair deal was found by Cheapflights users on 5/6. 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.
Sat 7/257:50 pm
ISP
-
LAS
1 stop31h 06m
Frontier
Wed 8/59:15 am
LAS
-
ISP
1 stop21h 48m
Frontier
Deal found 5/6$224
This Frontier deal was found by Cheapflights users on 5/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:48 am
ISP
-
LAS
1 stop12h 57m
Frontier
Wed 9/910:12 pm
LAS
-
ISP
1 stop8h 21m
Frontier
Deal found 5/6$230
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:52 pm
ISP
-
LAS
1 stop16h 18m
Frontier
Fri 6/129:15 am
LAS
-
ISP
1 stop8h 42m
Frontier
Deal found 5/10$233
This Frontier deal was found by Cheapflights users on 5/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:43 pm
ISP
-
LAS
1 stop9h 10m
Frontier
Wed 5/278:17 pm
LAS
-
ISP
1 stop10h 48m
Frontier
Deal found 5/6$240
This Frontier deal was found by Cheapflights users on 5/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:48 am
ISP
-
LAS
1 stop12h 57m
Frontier
Tue 9/88:17 pm
LAS
-
ISP
1 stop10h 16m
Frontier
Deal found 5/6$244
This Expedia deal was found by Cheapflights users on 5/10. 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.
Wed 6/109:52 pm
ISP
-
LAS
1 stop16h 18m
Frontier
Wed 6/179:51 pm
LAS
-
ISP
1 stop20h 06m
Frontier
Deal found 5/10$250
This CheapOair deal was found by Cheapflights users on 5/6. 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.
Fri 7/1710:48 am
ISP
-
LAX
1 stop10h 24m
Frontier
Mon 7/2011:00 pm
LAX
-
ISP
1 stop13h 56m
Frontier
Deal found 5/6$250
This CheapOair deal was found by Cheapflights users on 5/8. 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.
Mon 5/256:43 pm
ISP
-
LAS
1 stop9h 10m
Frontier
Fri 5/2910:25 pm
LAS
-
ISP
1 stop16h 33m
Frontier
Deal found 5/8$260
This Frontier deal was found by Cheapflights users on 5/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:00 am
ISP
-
LAX
1 stop10h 27m
Frontier
Mon 8/1711:00 pm
LAX
-
ISP
1 stop13h 56m
Frontier
Deal found 5/8$260
This Frontier deal was found by Cheapflights users on 5/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:48 am
ISP
-
LAS
1 stop12h 57m
Frontier
Thu 9/1010:12 pm
LAS
-
ISP
1 stop8h 21m
Frontier
Deal found 5/6$264
This CheapOair deal was found by Cheapflights users on 5/6. 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.
Thu 8/2010:48 am
ISP
-
SFO
1 stop26h 41m
Frontier
Tue 8/258:51 pm
SFO
-
ISP
1 stop10h 12m
Frontier
Deal found 5/6$270
This CheapOair deal was found by Cheapflights users on 5/8. 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.
Fri 6/511:00 am
ISP
-
LAS
1 stop27h 14m
Frontier
Tue 6/99:51 pm
LAS
-
ISP
1 stop20h 06m
Frontier
Deal found 5/8$270

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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$224
(CheapOair)

One-way from

$111
(Frontier)

Popular in

December

Cheapest in

January

Average price

$402
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
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 11, 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

Tue 9/1

4:41 pm-11:10 am

1 stop21h 29m

Las Vegas Harry Reid Intl

Tue 9/8

8:17 pm-9:33 am

1 stop10h 16m

$335

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Tue 10/13

4:13 pm-6:48 pm

1 stop29h 35m

Los Angeles Los Angeles

Sat 10/17

9:56 pm-9:33 am

1 stop8h 37m

$335

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Tue 6/9

4:40 pm-11:25 pm

1 stop9h 45m

San Diego

Tue 6/16

9:40 pm-8:05 am

1 stop7h 25m

$395

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Tue 8/11

3:20 pm-7:35 pm

1 stop7h 15m

San Diego

Tue 8/18

10:40 pm-12:10 pm

2 stops10h 30m

$400

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Tue 6/16

6:00 am-10:30 am

1 stop7h 30m

Los Angeles Los Angeles

Tue 6/30

7:45 pm-8:05 am

2 stops9h 20m

$400

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Wed 6/3

12:30 pm-6:55 pm

1 stop9h 25m

San Diego

Wed 6/10

9:55 pm-10:30 am

1 stop9h 35m

$411

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Wed 8/5

10:55 am-4:15 pm

1 stop8h 20m

San Diego

Sun 8/9

10:40 pm-9:40 am

1 stop8h 00m

$431
Quickest round-trip

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Sat 8/1

2:45 pm-6:55 pm

1 stop7h 10m

San Diego

Wed 8/5

10:40 pm-9:40 am

1 stop8h 00m

$431

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sat 8/22

3:15 pm-8:10 pm

1 stop7h 55m

Los Angeles Los Angeles

Sat 8/29

10:45 pm-12:05 pm

1 stop10h 20m

$433

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Tue 6/2

12:30 pm-5:50 pm

1 stop8h 20m

Los Angeles Los Angeles

Fri 6/19

9:50 pm-2:50 pm

1 stop14h 00m

$436

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

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

How much does it cost to fly round-trip from Islip, New York to California?

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 May 11, 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
4,298 reviews

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,298 reviews
Southwest
8.0
Very good
4,298 reviews

Food

7.0

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 45m. Fly via Frontier or Southwest to get the fastest option. The distance from Islip, New York to California is about 2475 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$339Average$503FlexibilityNo cancel feeOn-time63%

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