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$98+ Cheap flights from Islip, NY to Los Angeles (ISP - LAX)

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheap flight deals from Islip to Los Angeles

Cheapest flights from Islip to Los Angeles
Explore the most affordable flight options available from Islip to Los Angeles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 10, 2025.

This CheapOair deal was found by Cheapflights users on 12/8. 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 12/222:04 pmISP - LAX
1 stop30h 59mFrontier
Tue 12/3011:59 pmLAX - ISP
1 stop13h 38mFrontier
Deal found 12/8$254
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Mon 12/222:04 pmISP - LAX
1 stop30h 59mFrontier
Wed 12/3111:59 pmLAX - ISP
1 stop8h 26mFrontier
Deal found 12/7$255
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Sun 12/218:35 pmISP - LAX
1 stop24h 28mFrontier
Wed 12/3111:59 pmLAX - ISP
1 stop8h 26mFrontier
Deal found 12/7$284
This CheapOair deal was found by Cheapflights users on 12/8. 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 12/222:04 pmISP - LAX
1 stop30h 59mFrontier
Thu 12/2511:59 pmLAX - ISP
1 stop10h 10mFrontier
Deal found 12/8$305
This CheapOair deal was found by Cheapflights users on 12/8. 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.
Sat 12/206:40 pmISP - LAX
1 stop26h 23mFrontier
Tue 12/3011:59 pmLAX - ISP
1 stop13h 38mFrontier
Deal found 12/8$313
This CheapOair deal was found by Cheapflights users on 12/8. 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 12/222:04 pmISP - LAX
1 stop30h 59mFrontier
Wed 12/2411:59 pmLAX - ISP
1 stop8h 26mFrontier
Deal found 12/8$325
This CheapOair deal was found by Cheapflights users on 12/8. 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 12/198:35 pmISP - LAX
1 stop24h 28mFrontier
Tue 12/3011:59 pmLAX - ISP
1 stop13h 38mFrontier
Deal found 12/8$343
This CheapOair deal was found by Cheapflights users on 12/8. 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.
Sun 12/212:04 pmISP - LAX
1 stop30h 59mFrontier
Wed 12/2411:59 pmLAX - ISP
1 stop8h 26mFrontier
Deal found 12/8$354
This CheapOair deal was found by Cheapflights users on 12/8. 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 12/245:27 pmISP - LAX
1 stop27h 36mFrontier
Tue 12/3011:59 pmLAX - ISP
1 stop13h 38mFrontier
Deal found 12/8$363
This CheapOair deal was found by Cheapflights users on 12/7. 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.
Wed 12/245:27 pmISP - LAX
1 stop27h 36mFrontier
Wed 12/3111:59 pmLAX - ISP
1 stop8h 26mFrontier
Deal found 12/7$364

Find flight deals from Islip to Los Angeles

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Los Angeles (LAX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$183
(CheapOair)

One-way from

$98
(CheapOair)

Popular in

October

Cheapest in

April

Average price

$472
Provider with most accurate pricing for Islip Long Island-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Los Angeles flights.
Search Deals
From Islip Long Island to Los Angeles
Search Deals
One-way flight from Islip Long Island to Los Angeles
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 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 Los Angeles 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 10, 2025.
Use the filters below to find and compare flights from Islip to Los Angeles that are best for you.

Fly from

Islip

Fly to

Los Angeles

Route

Depart

Return

Price

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 3/9

8:19 pm-6:03 pm

1 stop24h 44m

Los Angeles

Thu 3/12

11:59 pm-7:11 pm

1 stop16h 12m

$183

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sun 3/8

8:19 pm-6:03 pm

1 stop24h 44m

Los Angeles

Thu 3/12

11:59 pm-7:11 pm

1 stop16h 12m

$218

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sat 12/20

6:40 pm-6:03 pm

1 stop26h 23m

Los Angeles

Tue 12/30

11:59 pm-4:37 pm

1 stop13h 38m

$313

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 12/22

2:04 pm-6:03 pm

1 stop30h 59m

Los Angeles

Wed 12/24

11:59 pm-11:25 am

1 stop8h 26m

$325

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 1/5

4:40 pm-7:19 pm

1 stop29h 39m

Los Angeles

Tue 1/13

10:45 pm-10:46 pm

2 stops21h 01m

$328

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sun 3/8

8:19 pm-6:03 pm

1 stop24h 44m

Los Angeles

Sun 3/15

11:59 pm-7:11 pm

1 stop16h 12m

$337

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sun 12/21

8:35 pm-6:03 pm

1 stop24h 28m

Los Angeles

Thu 12/25

11:59 pm-7:40 pm

1 stop16h 41m

$354

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sun 12/21

8:35 pm-6:03 pm

1 stop24h 28m

Los Angeles

Wed 12/31

11:59 pm-11:25 am

1 stop8h 26m

$358

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Fri 3/20

1:42 pm-7:01 pm

1 stop32h 19m

Los Angeles

Wed 3/25

10:39 pm-4:13 pm

1 stop14h 34m

$371

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sat 12/20

6:40 pm-6:03 pm

1 stop26h 23m

Los Angeles

Wed 12/24

11:59 pm-11:25 am

1 stop8h 26m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 18 results
1
2

Compare providers for flights from Islip to Los Angeles

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Los Angeles in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Los Angeles flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-Los Angeles flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-Los Angeles flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Los Angeles flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Los Angeles flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Los Angeles

Have a flexible travel schedule? Discover the best time to fly to Los Angeles 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 Los Angeles

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

Currently, December is the cheapest month in which you can book a flight from Islip, New York to Los Angeles (average of $84). Flying from Islip, New York to Los Angeles in June is currently the most expensive (average of $146). 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 LAX?

Find hourly flight availability from Islip to Los Angeles. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 10, 2025.

When flying from Islip, New York to Los Angeles, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 50% versus a flight at noon.

Reviews of airlines servicing Los Angeles

Get insights into the airlines that provide service to Los Angeles. 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 Los Angeles. Reviews last updated December 10, 2025.
See what other customers who have flown with Southwest from Islip to Los Angeles have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

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

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

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 Los Angeles. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Frontier can get you from Islip, New York to Los Angeles in just under 24h 44m. Your travel time can differ by up to . The distance from Islip, New York to Los Angeles is about 2503 mi.

  • What is the cheapest airline to fly from Islip, New York to Los Angeles round-trip?

    According to our current data, Southwest ($344), offers the cheapest pricing from Islip, New York to Los Angeles. Southwest is currently priced 22% below the average price you’ll pay for this route.

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

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

  • How can I find direct flights from Islip to Los Angeles?

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

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

    Yes. Cheapflights offers flight deals from Islip to Los Angeles 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 Los Angeles?

    Currently, December is the cheapest month in which you can book a flight from Islip, New York to Los Angeles (average of $84). Flying from Islip, New York to Los Angeles in June is currently the most expensive (average of $146). 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

Traveling to a place near Los Angeles?

Book flights to Los Angeles if you plan to visit one of these locations
Downey
Stanton
Oceanside
Universal City
Avalon
Buena Park
El Segundo
Inglewood
Hesperia
Glendale
Torrance
Lancaster
Manhattan Beach
Redondo Beach
Montebello
West Hollywood
Garden Grove
Moreno Valley
Rancho Cucamonga
Rosemead

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Islip to Los Angeles

Discover the top airline that operate flights from Islip to Los Angeles. 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 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$344Average$454FlexibilityNo cancel feeOn-time63%

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