HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Los Angeles

$132+ Cheap flights from Islip 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Islip to Los Angeles with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 September 17, 2025.

Round-trip from

$187
(CheapOair)

One-way from

$132
(JetBlue)

Popular in

November

Cheapest in

April

Average price

$397
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. 27% potential increase in price ($184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 September 17, 2025.

This CheapOair deal was found by Cheapflights users on 9/15. 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 10/211:40 amISP - LAX
1 stop23h 32mFrontier
Fri 10/102:27 pmLAX - ISP
1 stop17h 10mFrontier
Deal found 9/15$187
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/114:58 pmISP - LAX
1 stop18h 30mFrontier
Wed 10/152:27 pmLAX - ISP
1 stop27h 15mFrontier
Deal found 9/16$209
This CheapOair deal was found by Cheapflights users on 9/15. 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 10/99:37 pmISP - LAX
1 stop13h 51mFrontier
Tue 10/142:27 pmLAX - ISP
1 stop17h 30mFrontier
Deal found 9/15$221
This Frontier deal was found by Cheapflights users on 9/16. 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.
Thu 10/169:37 pmISP - LAX
1 stop13h 51mFrontier
Thu 10/232:15 pmLAX - ISP
2 stops17h 22mFrontier
Deal found 9/16$222
This CheapOair deal was found by Cheapflights users on 9/15. 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.
Fri 10/104:58 pmISP - LAX
1 stop18h 30mFrontier
Wed 10/152:27 pmLAX - ISP
1 stop27h 15mFrontier
Deal found 9/15$226
This CheapOair deal was found by Cheapflights users on 9/15. 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 9/2511:40 amISP - LAX
1 stop23h 32mFrontier
Mon 9/292:21 pmLAX - ISP
1 stop17h 19mFrontier
Deal found 9/15$229
This CheapOair deal was found by Cheapflights users on 9/16. 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.
Sat 10/114:58 pmISP - LAX
1 stop18h 30mFrontier
Sat 10/182:27 pmLAX - ISP
1 stop27h 25mFrontier
Deal found 9/16$231
This CheapOair deal was found by Cheapflights users on 9/15. 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 10/211:40 amISP - LAX
1 stop23h 32mFrontier
Sat 10/112:27 pmLAX - ISP
1 stop27h 25mFrontier
Deal found 9/15$233
This CheapOair deal was found by Cheapflights users on 9/17. 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 10/45:05 pmISP - LAX
1 stop18h 07mFrontier
Fri 10/172:27 pmLAX - ISP
1 stop17h 10mFrontier
Deal found 9/17$241
This CheapOair deal was found by Cheapflights users on 9/15. 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.
Wed 9/2411:35 amISP - LAX
1 stop23h 37mFrontier
Thu 10/92:27 pmLAX - ISP
1 stop17h 10mFrontier
Deal found 9/15$248
This CheapOair deal was found by Cheapflights users on 9/17. 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 10/104:58 pmISP - LAX
1 stop18h 30mFrontier
Tue 10/142:27 pmLAX - ISP
1 stop17h 30mFrontier
Deal found 9/17$251
This CheapOair deal was found by Cheapflights users on 9/15. 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 9/2511:40 amISP - LAX
1 stop23h 32mFrontier
Sun 9/282:21 pmLAX - ISP
1 stop17h 19mFrontier
Deal found 9/15$254

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 September 17, 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

Sun 10/12

9:47 pm-8:28 am

1 stop13h 41m

Los Angeles

Tue 10/14

2:27 pm-10:57 am

1 stop17h 30m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sun 10/5

11:25 am-8:12 am

1 stop23h 47m

Los Angeles

Thu 10/16

2:27 pm-10:37 am

1 stop17h 10m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Sat 10/18

4:58 pm-8:28 am

1 stop18h 30m

Los Angeles

Wed 10/22

2:27 pm-8:42 pm

1 stop27h 15m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 10/2

11:40 am-8:12 am

1 stop23h 32m

Los Angeles

Mon 10/6

2:21 pm-8:42 pm

1 stop27h 21m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Tue 10/7

9:37 pm-8:28 am

1 stop13h 51m

Los Angeles

Tue 10/14

2:27 pm-10:57 am

1 stop17h 30m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Wed 10/1

11:35 am-8:12 am

1 stop23h 37m

Los Angeles

Sun 10/5

2:21 pm-10:40 am

1 stop17h 19m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 10/2

11:40 am-8:12 am

1 stop23h 32m

Los Angeles

Thu 10/9

2:27 pm-10:37 am

1 stop17h 10m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 10/2

11:40 am-8:12 am

1 stop23h 32m

Los Angeles

Fri 10/3

2:21 pm-10:55 am

1 stop17h 34m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Tue 10/14

9:37 pm-8:28 am

1 stop13h 51m

Los Angeles

Wed 10/15

2:27 pm-8:42 pm

1 stop27h 15m

$187

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 10/16

9:37 pm-8:28 am

1 stop13h 51m

Los Angeles

Thu 10/23

2:27 pm-10:37 am

1 stop17h 10m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 22 results
1
2
3

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 to Los Angeles?

Currently, January is the cheapest month in which you can book a flight from Islip to Los Angeles (average of $246). Flying from Islip to Los Angeles in March is currently the most expensive (average of $325). 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 September 17, 2025.

When flying from Islip to Los Angeles, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 13% versus a flight at noon.

How much does it cost to fly round-trip from Islip to Los Angeles?

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 September 17, 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
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

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 to Los Angeles?

    Frontier can get you from Islip to Los Angeles in just under 13h 41m. Your travel time can differ by up to . Islip and Los Angeles are separated by a distance of 2503 mi.

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

    Flying on Southwest is currently your cheapest option to Los Angeles, with prices starting at $376. Users have found that Southwest is 24% cheaper than the other options available to this destination.

  • 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 to Los Angeles?

    Currently, January is the cheapest month in which you can book a flight from Islip to Los Angeles (average of $246). Flying from Islip to Los Angeles in March is currently the most expensive (average of $325). 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
Stanton
Inglewood
Oceanside
El Segundo
Buena Park
Avalon
Torrance
Moreno Valley
Hesperia
Downey
Montebello
Universal City
Garden Grove
Manhattan Beach
San Gabriel
West Hollywood
Glendale
Lancaster
Rowland Heights
Santa Clarita

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Islip to Los Angeles

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Newark to Los Angeles flights
LaGuardia to Los Angeles flights
Newark to San Francisco flights
LaGuardia to Las Vegas flights
John F Kennedy Intl to Ontario flights
LaGuardia to San Francisco flights
John F Kennedy Intl to San Diego flights
Newark to Burbank flights
Newark to San Diego flights
Newark to Ontario flights
Newark to Santa Ana flights
LaGuardia to Burbank flights
LaGuardia to Santa Ana flights
John F Kennedy Intl to Santa Ana flights
LaGuardia to San Diego flights
LaGuardia to Ontario flights
John F Kennedy Intl to San Jose flights
Newark to San Jose flights
Newark to Palm Springs flights
John F Kennedy Intl to Palm Springs flights
Newark to Sacramento flights
Buffalo to Las Vegas flights
Newark to Oakland flights
Rochester to Las Vegas flights
LaGuardia to Palm Springs flights
Stewart to Las Vegas flights
John F Kennedy Intl to Sacramento flights
John F Kennedy Intl to Oakland flights
John F Kennedy Intl to Reno flights
LaGuardia to San Jose flights
Albany to Las Vegas flights
John F Kennedy Intl to Long Beach flights
Syracuse to Las Vegas flights
Newark to Reno flights
Stewart to San Francisco flights
LaGuardia to Oakland flights
LaGuardia to Sacramento flights
White Plains to Los Angeles flights
John F Kennedy Intl to Burbank flights
White Plains to Las Vegas flights
LaGuardia to Reno flights
Islip to Las Vegas flights
Buffalo to Los Angeles flights
Buffalo to San Francisco flights
Rochester to Los Angeles flights
Syracuse to San Francisco flights

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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$376Average$504FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.