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$90+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:59 pm
ISP
-
LAS
1 stop21h 16m
Frontier
Mon 3/211:03 pm
LAS
-
ISP
1 stop30h 37m
Frontier
Deal found 1/26$180
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:59 pm
ISP
-
LAS
1 stop21h 16m
Frontier
Wed 2/2511:03 pm
LAS
-
ISP
1 stop12h 36m
Frontier
Deal found 1/26$201
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Thu 4/95:45 am
ISP
-
LAX
1 stop15h 54m
Frontier
Thu 4/168:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 1/26$201
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Fri 4/243:50 pm
ISP
-
LAS
1 stop19h 36m
Frontier
Wed 4/2911:59 pm
LAS
-
ISP
1 stop30h 14m
Frontier
Deal found 1/26$215
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Thu 4/304:07 pm
ISP
-
LAX
1 stop29h 32m
Frontier
Sun 5/38:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 1/26$215
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
Mon 2/92:31 pm
ISP
-
LAS
2 stops10h 58m
Multiple Airlines
Fri 2/1311:03 pm
LAS
-
ISP
1 stop8h 43m
Multiple Airlines
Deal found 1/25$221
This CheapOair deal was found by Cheapflights users on 1/25. 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 2/259:33 am
ISP
-
LAS
1 stop27h 42m
Frontier
Sat 2/2811:03 pm
LAS
-
ISP
1 stop29h 35m
Frontier
Deal found 1/25$222
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Thu 4/234:07 pm
ISP
-
LAS
1 stop9h 29m
Frontier
Sun 4/2611:34 pm
LAS
-
ISP
1 stop12h 21m
Frontier
Deal found 1/26$235
This Frontier deal was found by Cheapflights users on 1/25. 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 4/194:07 pm
ISP
-
LAS
1 stop9h 29m
Frontier
Thu 4/2311:34 pm
LAS
-
ISP
1 stop12h 21m
Frontier
Deal found 1/25$236
This CheapOair deal was found by Cheapflights users on 1/27. 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.
Sat 2/2111:41 am
ISP
-
LAS
1 stop25h 34m
Frontier
Mon 2/2311:03 pm
LAS
-
ISP
1 stop30h 37m
Frontier
Deal found 1/27$255
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Fri 2/208:33 am
ISP
-
LAS
1 stop29h 13m
Frontier
Sat 2/2811:03 pm
LAS
-
ISP
1 stop29h 35m
Frontier
Deal found 1/26$256
This Priceline deal was found by Cheapflights users on 1/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:07 pm
ISP
-
LAS
1 stop9h 29m
Frontier
Thu 5/711:34 pm
LAS
-
ISP
1 stop12h 21m
Frontier
Deal found 1/24$261

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$180
(Expedia)

One-way from

$90
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$320
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. 6% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 27, 2026.
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

Mon 2/23

3:59 pm-10:15 am

1 stop21h 16m

Las Vegas Harry Reid Intl

Mon 3/2

11:03 pm-8:40 am

1 stop30h 37m

$180

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 4/9

5:45 am-6:39 pm

1 stop15h 54m

Los Angeles

Thu 4/16

8:54 pm-9:13 am

1 stop9h 19m

$201

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 4/20

4:07 pm-6:39 pm

1 stop29h 32m

Los Angeles

Sat 4/25

8:54 pm-9:13 am

1 stop9h 19m

$201

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 4/30

4:07 pm-6:39 pm

1 stop29h 32m

Los Angeles

Sun 5/3

8:54 pm-9:13 am

1 stop9h 19m

$215

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 4/16

4:07 pm-10:36 pm

1 stop9h 29m

Las Vegas Harry Reid Intl

Thu 4/23

11:34 pm-2:55 pm

1 stop12h 21m

$222

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 4/19

4:07 pm-10:36 pm

1 stop9h 29m

Las Vegas Harry Reid Intl

Thu 4/23

11:34 pm-2:55 pm

1 stop12h 21m

$236

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 4/16

4:07 pm-10:36 pm

1 stop9h 29m

Las Vegas Harry Reid Intl

Sun 4/26

11:34 pm-2:55 pm

1 stop12h 21m

$256

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 4/19

4:07 pm-10:36 pm

1 stop9h 29m

Las Vegas Harry Reid Intl

Sun 4/26

11:34 pm-2:55 pm

1 stop12h 21m

$270

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 3/4

9:33 am-10:15 am

1 stop27h 42m

Las Vegas Harry Reid Intl

Sun 3/8

11:59 pm-12:33 pm

1 stop9h 34m

$280

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 4/16

4:07 pm-10:36 pm

1 stop9h 29m

Las Vegas Harry Reid Intl

Sun 4/19

11:34 pm-2:55 pm

1 stop12h 21m

$296

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

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.

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 January 27, 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
4,268 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Crew

8.6

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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 11h 20m. 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 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 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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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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$344Average$481FlexibilityNo cancel feeOn-time63%

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