LAX - ISP

$112 Find Cheap Flights from Los Angeles to Islip - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Los Angeles to Islip departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$275
Typical prices: $388-$498
Frontier
Wed 9/2Sat 9/5
LAX - ISP • 1 stop
Cheapest one-way
$112
Typical prices: $142-$249
Frontier
Sat 9/5
LAX - ISP • 1 stop
Top airlines
Cheapest • from $275 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Los Angeles and Islip. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $411 (round-trip)
Shortest trip • 7h 27m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Los Angeles to Islip (LAX-ISP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Los Angeles to Islip that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Los Angeles to Islip

Wed, Sep 2 - Sat, Sep 5
Frontier Logo
11:20 pm - 6:14 pm
LAX
-
ISP
15h 54m
1 stop
Frontier Logo
10:57 am - 6:18 pm
ISP
-
LAX
10h 21m
1 stop
$275Frontier
Wed, Sep 2 - Sat, Sep 5
Frontier Logo
11:20 pm - 6:14 pm
LAX
-
ISP
15h 54m
1 stop
Frontier Logo
10:57 am - 6:18 pm
ISP
-
LAX
10h 21m
1 stop
$283Frontier
Thu, Sep 24 - Mon, Sep 28
Frontier Logo
9:40 pm - 4:58 pm
LAX
-
ISP
16h 18m
1 stop
Frontier Logo
5:43 pm - 6:10 pm
ISP
-
LAX
27h 27m
1 stop
$285Frontier
Wed, Aug 26 - Mon, Aug 31
Frontier Logo
11:20 pm - 6:14 pm
LAX
-
ISP
15h 54m
1 stop
Frontier Logo
10:57 am - 6:12 pm
ISP
-
LAX
10h 15m
1 stop
$309Frontier
Wed, Aug 26 - Sat, Aug 29
Frontier Logo
11:20 pm - 6:14 pm
LAX
-
ISP
15h 54m
1 stop
Frontier Logo
10:57 am - 6:12 pm
ISP
-
LAX
10h 15m
1 stop
$309Frontier
Wed, Aug 26 - Wed, Sep 2
Frontier Logo
11:20 pm - 6:14 pm
LAX
-
ISP
15h 54m
1 stop
Frontier Logo
10:57 am - 6:18 pm
ISP
-
LAX
10h 21m
1 stop
$309Frontier
Wed, Aug 26 - Tue, Sep 1
Frontier Logo
11:20 pm - 6:14 pm
LAX
-
ISP
15h 54m
1 stop
Frontier Logo
10:57 am - 6:18 pm
ISP
-
LAX
10h 21m
1 stop
$309Frontier
Thu, Sep 24 - Mon, Sep 28
Frontier Logo
9:40 pm - 4:58 pm
LAX
-
ISP
16h 18m
1 stop
Frontier Logo
5:43 pm - 6:10 pm
ISP
-
LAX
27h 27m
1 stop
$318Frontier
Mon, Oct 26 - Sat, Oct 31
Southwest Logo
11:05 pm - 12:10 pm
LAX
-
ISP
10h 05m
2 stops
Southwest Logo
6:00 am - 2:00 pm
ISP
-
LAX
11h 00m
2 stops
$321Southwest
Thu, Aug 27 - Thu, Sep 3
Southwest Logo
5:05 am - 10:05 pm
LAX
-
ISP
14h 00m
1 stop
Southwest Logo
1:15 pm - 9:20 pm
ISP
-
LAX
11h 05m
2 stops
$322Southwest
Booking Insights

KAYAK's insights & trends for Los Angeles to Islip flights

Get data-powered insights and trends into flights from Los Angeles to Islip to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Los Angeles to Islip, New York?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Los Angeles to Islip, New York departing in September.

Flight prices are below average for this route right now.

Flights to Islip, New York from Los Angeles usually cost between $368 and $561 in September.
The lowest price found in the past 5 days was $275 on Frontier (Sep 2-Sep 5).

What is the cheapest month to fly from Los Angeles to Islip?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Los Angeles to Islip, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Los Angeles to Islip is April, where tickets cost $0 (return) on average. On the other hand, the most expensive months are February and May, where the average cost of round-trip tickets is $1,258 and $1,056 respectively.

Good to know

Cheapest flight

$112
Most popular time to fly and prices are also 28% lower on average.
Flight from Los Angeles to Islip

When to book flights from Los Angeles to Islip

Are your dates flexible? Find out the best times to travel from Los Angeles to Islip based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Los Angeles to Islip

  • What is the cheapest flight from Los Angeles to Islip?

    In the last 5 days, the lowest price for a flight from Los Angeles to Islip was $112 for a one-way ticket and $275 for a round-trip.

  • Do I need a passport to fly between Los Angeles and Islip?

    No, a passport isn't needed to fly from Los Angeles to Islip. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Los Angeles to Islip?

    Los Angeles and Islip are both served by 1 main airport. You will leave Los Angeles from Los Angeles Los Angeles and will be arriving at Islip Long Island.

  • Which aircraft models fly most regularly from Los Angeles to Islip?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Los Angeles to Islip?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Los Angeles to Islip.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Los Angeles to Islip?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Los Angeles is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Los Angeles to Islip?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Islip with an airline and back to Los Angeles with another airline. Booking your flights between Los Angeles and ISP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Los Angeles to Islip?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Islip from Los Angeles up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Los Angeles to Islip

 
See real verified KAYAK customer reviews for airlines flying from Los Angeles to Islip. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Los Angeles to Islip? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4229 reviews
8.0Comfort
8.6Crew
7.5Entertainment
8.1Boarding
7.0Food
Airline reviews

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

2.0 MediocreJames, Apr 2026
LAX - MCO
Read more Southwest reviews

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

It was good from LAX to Phoenix, But the connection in Phoenix to Tulsa was not that great. The staff on both flights were great. The choice of free entertainment was ok nothing to brag about. The 45 min delay because of some electrical issue wasn't great from Phoenix to Tulsa. We sat there with hardly any air, The seat I had was between windows so the side of the plane pushed in on you. My being a bigger man it then made the seating area uncomfortable. The seats on the plane had no power to connect to recharge your phone or anything. I would recommend that they should look into a slot or clamp to hold your phone to enjoy while watching the entertainment choices hands-free. Also make it possible to raise the inner seat by the window be able to raise the arm rest up to make more room for larger people to set more comfortably. I would also say other then that stop price gouging the airfare or nickel and diming everything. Not fair for people having to fly for emergencies and be paying for higher prices due to the season or holidays. Your making your money either way and the cost of flying is still going to be the same regardless if there's 100 people or 200 people.

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Can not wait for seating change to reduce the amount of pre boards - it’s disheartening the abuse. And then then deplaning

The flight took off late, which really stressed me out for 5 hours worrying about my connection. We started boarding late... not sure why. There was a long line for preboard of folks that needed assistance or were in wheelchairs and not enough attendants to help. There was one lady who seemed to hold up regular boarding bc she needed to consolidate her 3 bags into 2. I'm wondering why we all had to wait for her and not board around her. Crew on board was great! So funny, so helpful and very nice. They reassured me my connecting flight would wait... and it dead. Seems it was waiting on several connecting flights, so it took off late too. Overall a very long trip but I'm glad I didn't have to spend the night in the Baltimore airport. And why are SW terminals so far from each other. I had to haul from the end of one terminal to the end of different terminal to catch my flight.

Best domestic airline in the USA. Excellent fares and two bags included with every fare (only carrier to do so).

The crew was fabulous, outstanding, friendly, attentive and just great, really made my flight one of the best I've ever had, thank you southwest crew flight #474, from Los Angeles to San Francisco on April 2,2024

Everything you need to know for your flight from Los Angeles to Islip

Information on your arrival and departure airports