ISP - LAX

$96 Find Cheap Flights from Islip to Los Angeles

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Los Angeles departing on 4/20. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Los Angeles

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Los Angeles, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Los Angeles, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$201
Frontier
Mon 4/20Sat 4/25
ISP - LAX • 1 stop
Cheapest one-way
$96
Overall average: $423
Frontier
Mon 4/20
ISP - LAX • 1 stop
Top airlines
Frontier
Cheapest • from $201 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Los Angeles!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to Los Angeles 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 Islip to Los Angeles

Mon, Apr 20 - Sat, Apr 25
Frontier Logo
4:07 pm - 6:39 pm
ISP
-
LAX
29h 32m
1 stop
Frontier Logo
8:54 pm - 9:13 am
LAX
-
ISP
9h 19m
1 stop
$201Frontier
Sun, Apr 12 - Sun, Apr 19
Frontier Logo
8:36 pm - 6:39 pm
ISP
-
LAX
25h 03m
1 stop
Frontier Logo
8:54 pm - 9:13 am
LAX
-
ISP
9h 19m
1 stop
$335Frontier
Thu, Feb 19 - Tue, Mar 3
Southwest Logo
11:50 am - 6:40 pm
ISP
-
LAX
9h 50m
1 stop
Southwest Logo
6:05 am - 4:15 pm
LAX
-
ISP
7h 10m
1 stop
$365Southwest
Thu, Feb 19 - Tue, Mar 3
Southwest Logo
11:50 am - 8:55 pm
ISP
-
LAX
12h 05m
2 stops
Southwest Logo
6:05 am - 4:15 pm
LAX
-
ISP
7h 10m
1 stop
$370Southwest
Thu, Feb 19 - Tue, Mar 3
Southwest Logo
11:50 am - 8:55 pm
ISP
-
LAX
12h 05m
2 stops
Southwest Logo
7:50 am - 9:55 pm
LAX
-
ISP
11h 05m
2 stops
$375Southwest
Sat, Apr 11 - Sat, Apr 18
Frontier Logo
7:15 am - 6:39 pm
ISP
-
LAX
14h 24m
1 stop
Frontier Logo
8:54 pm - 9:13 am
LAX
-
ISP
9h 19m
1 stop
$391Frontier
Mon, Mar 16 - Wed, Mar 18
Frontier Logo
1:22 pm - 7:01 pm
ISP
-
LAX
32h 39m
1 stop
Frontier Logo
10:43 pm - 3:49 pm
LAX
-
ISP
14h 06m
1 stop
$438Frontier
Sun, Mar 15 - Fri, Mar 20
Southwest Logo
5:55 pm - 11:40 pm
ISP
-
LAX
8h 45m
1 stop
Southwest Logo
5:00 am - 5:20 pm
LAX
-
ISP
9h 20m
1 stop
$447Southwest
Sun, Mar 15 - Fri, Mar 20
Southwest Logo
11:45 am - 10:25 pm
ISP
-
LAX
13h 40m
2 stops
Southwest Logo
5:00 am - 5:20 pm
LAX
-
ISP
9h 20m
1 stop
$474Southwest
Fri, Mar 13 - Sun, Mar 15
Frontier Logo
1:42 pm - 7:01 pm
ISP
-
LAX
32h 19m
1 stop
Frontier Logo
10:43 pm - 12:33 pm
LAX
-
ISP
10h 50m
1 stop
$480Frontier
Booking Insights

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

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

Which airlines provide the cheapest flights from Islip to Los Angeles?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Islip to Los Angeles were found on Frontier ($201) and Southwest ($365).

Find deals

Good to know

Low seasonMarch
Cheapest flight$96
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Islip to Los Angeles

When to book flights from Islip to Los Angeles

Are your dates flexible? Find out the best times to travel from Islip to Los Angeles 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 Islip to Los Angeles

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

    In the last 3 days, the lowest price for a flight from Islip to Los Angeles was $96 for a one-way ticket and $201 for a round-trip.

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

    No

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

    When flying out of Islip you will be using Islip Long Island. You will be landing at Los Angeles, also known as Los Angeles.

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

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

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

    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 Islip to Los Angeles.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Los Angeles from Islip 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 Islip to Los Angeles?

    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 Los Angeles with an airline and back to Islip with another airline. Booking your flights between Islip and LAX 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 Islip to Los Angeles?

    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 Los Angeles from Islip 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 Islip to Los Angeles

 
See real verified KAYAK customer reviews for airlines flying from Islip to Los Angeles. 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 Islip to Los Angeles? 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 4267 reviews
7.0Food
8.0Comfort
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

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

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

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

Information on your arrival and departure airports

Islip (ISP)
Los Angeles (LAX)