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$106+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Mar 19 — Mar 261
Thu 3/19
Thu 3/26
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 February 17, 2026.

This CheapOair deal was found by Cheapflights users on 2/15. 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 32m
Frontier
Sun 4/198:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 2/15$200
This CheapOair deal was found by Cheapflights users on 2/13. 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 4/137:34 pm
ISP
-
LAX
1 stop26h 05m
Frontier
Thu 4/168:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 2/13$242
This Frontier deal was found by Cheapflights users on 2/16. 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 4/136:15 am
ISP
-
LAX
1 stop15h 24m
Frontier
Wed 4/158:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 2/16$245
This Frontier deal was found by Cheapflights users on 2/13. 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 4/95:45 am
ISP
-
LAX
1 stop15h 54m
Frontier
Sat 4/188:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 2/13$286
This CheapOair deal was found by Cheapflights users on 2/16. 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 3/61:42 pm
ISP
-
LAX
1 stop32h 19m
Frontier
Sun 3/810:43 pm
LAX
-
ISP
1 stop10h 50m
Frontier
Deal found 2/16$290
This CheapOair deal was found by Cheapflights users on 2/13. 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 3/53:34 pm
ISP
-
LAX
1 stop30h 27m
Frontier
Sun 3/810:43 pm
LAX
-
ISP
1 stop10h 50m
Frontier
Deal found 2/13$320
This Frontier deal was found by Cheapflights users on 2/16. 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 4/117:15 am
ISP
-
LAX
1 stop14h 24m
Frontier
Sun 4/198:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 2/16$325
This CheapOair deal was found by Cheapflights users on 2/16. 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 4/88:30 am
ISP
-
LAX
1 stop13h 09m
Frontier
Wed 4/158:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 2/16$330
This Frontier deal was found by Cheapflights users on 2/16. 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 4/117:15 am
ISP
-
LAX
1 stop14h 24m
Frontier
Thu 4/168:54 pm
LAX
-
ISP
1 stop9h 19m
Frontier
Deal found 2/16$346
This Southwest deal was found by Cheapflights users on 2/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/184:40 pm
ISP
-
LAX
1 stop8h 20m
Southwest
Tue 3/249:55 pm
LAX
-
ISP
1 stop10h 45m
Southwest
Deal found 2/15$372
This Southwest deal was found by Cheapflights users on 2/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/195:55 pm
ISP
-
LAX
1 stop8h 25m
Southwest
Tue 3/2411:50 pm
LAX
-
ISP
2 stops8h 50m
Southwest
Deal found 2/15$385

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 February 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(CheapOair)

One-way from

$106
(CheapOair)

Popular in

October

Cheapest in

March

Average price

$532
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. 10% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 17, 2026.
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 4/13

7:34 pm-6:39 pm

1 stop26h 05m

Los Angeles

Thu 4/16

8:54 pm-9:13 am

1 stop9h 19m

$242

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 4/13

6:15 am-6:39 pm

1 stop15h 24m

Los Angeles

Wed 4/15

8:54 pm-9:13 am

1 stop9h 19m

$245

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

$266

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 4/9

5:45 am-6:39 pm

1 stop15h 54m

Los Angeles

Sat 4/18

8:54 pm-9:13 am

1 stop9h 19m

$286

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Fri 3/6

1:42 pm-7:01 pm

1 stop32h 19m

Los Angeles

Sun 3/8

10:43 pm-12:33 pm

1 stop10h 50m

$290

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Tue 4/7

8:30 am-6:39 pm

1 stop13h 09m

Los Angeles

Wed 4/15

8:54 pm-9:13 am

1 stop9h 19m

$325

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 3/19

5:55 pm-11:20 pm

1 stop8h 25m

Los Angeles

Tue 3/24

7:50 am-10:50 pm

1 stop12h 00m

$385

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Wed 3/18

4:40 pm-12:25 am

2 stops10h 45m

Los Angeles

Tue 3/24

11:30 pm-11:40 am

2 stops9h 10m

$387

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 3/9

5:55 pm-11:20 pm

1 stop8h 25m

Los Angeles

Thu 3/12

1:35 pm-11:55 pm

1 stop7h 20m

$393

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 3/16

5:55 pm-11:20 pm

1 stop8h 25m

Los Angeles

Mon 3/23

11:50 pm-11:40 am

2 stops8h 50m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Los Angeles flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, August is the cheapest month in which you can book a flight from Islip, New York to Los Angeles (average of $90). Flying from Islip, New York to Los Angeles in December is currently the most expensive (average of $155). 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 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 February 17, 2026.
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
8.0
Very good
4,289 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

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
8.0
Very good
4,289 reviews
Southwest
8.0
Very good
4,289 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

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 26h 05m. 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 20% 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, August is the cheapest month in which you can book a flight from Islip, New York to Los Angeles (average of $90). Flying from Islip, New York to Los Angeles in December is currently the most expensive (average of $155). 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
Oceanside
Inglewood
Universal City
Avalon
El Segundo
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Glendale
Lancaster
Garden Grove
Redondo Beach
Lake Elsinore
Montebello
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Buena Park
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Carson
Moreno Valley
Oxnard

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Alternative routes for Islip to Los Angeles

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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 February 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$344Average$476FlexibilityNo cancel feeOn-time63%

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