$128 Find Cheap Flights from Islip to California

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 California departing on 8/19. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to California, 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 California, as well as popular online travel agencies
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Cheap Flights from Islip to California

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop$261
San Francisco
San Francisco1 stop$299
San Diego
San Diego1 stop$351
San Jose
San Jose1 stop$338
Los Angeles
Los Angeles1 stop$261
San Francisco
San Francisco1 stop$299
San Diego
San Diego1 stop$351
San Jose
San Jose1 stop$338

Book Cheap Islip to California Plane Tickets

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

Sat, Aug 16 - Tue, Aug 19
Frontier Logo
8:37 pm - 9:45 amISP-LAS
16h 08m1 stop
Frontier Logo
3:15 pm - 11:41 pmLAS-ISP
29h 26m1 stop
$259Frontier
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Fri, Sep 12 - Tue, Sep 16
JetBlue Logo
11:35 am - 8:10 pmISP-LAX
11h 35m1 stop
JetBlue Logo
9:22 pm - 10:50 amLAX-ISP
10h 28m1 stop
$261JetBlue
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Wed, Aug 13 - Wed, Aug 20
Frontier Logo
4:45 pm - 9:12 amISP-LAS
19h 27m1 stop
Frontier Logo
3:15 pm - 6:38 pmLAS-ISP
24h 23m1 stop
$265Frontier
Find Deal
Sat, Aug 23 - Sun, Aug 24
Frontier Logo
7:33 pm - 3:29 pmISP-LAS
22h 56m1 stop
Frontier Logo
11:00 pm - 6:32 pmLAS-ISP
16h 32m1 stop
$278Frontier
Find Deal
Thu, Aug 14 - Tue, Aug 19
Frontier Logo
2:05 pm - 9:12 amISP-LAS
22h 07m1 stop
Frontier Logo
3:15 pm - 11:41 pmLAS-ISP
29h 26m1 stop
$279Frontier
Find Deal
Mon, Sep 29 - Fri, Oct 3
JetBlue Logo
11:35 am - 8:10 pmISP-LAX
11h 35m1 stop
JetBlue Logo
9:25 pm - 10:50 amLAX-ISP
10h 25m1 stop
$336JetBlue
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Wed, Aug 27 - Wed, Sep 3
Southwest Logo
12:30 pm - 5:35 pmISP-SJC
8h 05m1 stop
Southwest Logo
8:40 am - 10:05 pmSJC-ISP
10h 25m2 stops
$338Southwest
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Wed, Aug 27 - Wed, Sep 3
Southwest Logo
4:00 pm - 10:35 pmISP-LAX
9h 35m1 stop
Southwest Logo
8:30 am - 10:05 pmLAX-ISP
10h 35m2 stops
$338Southwest
Find Deal
Thu, Aug 14 - Mon, Aug 18
Breeze Airways Logo
7:39 pm - 11:44 amISP-SFO
19h 05m3 stops
Breeze Airways Logo
12:29 pm - 1:15 pmSFO-ISP
21h 46m3 stops
$652Breeze Airways
Find Deal
Wed, Sep 3 - Tue, Sep 9
Breeze Airways Logo
8:21 pm - 12:05 pmISP-SFO
18h 44m2 stops
Breeze Airways Logo
12:50 pm - 7:41 pmSFO-ISP
27h 51m2 stops
$683Breeze Airways
Find Deal
Booking Insights

KAYAK's insights & trends for Islip to California flights

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

What’s the cheapest day of the week to fly from Islip to California?

The average price of all round-trip flights from Islip to California clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Islip to California, look for departures on Thursdays and avoid leaving on a Tuesday, as it's usually the priciest day. When flying back from California, Wednesday is the cheapest day to fly and Thursday is the most expensive.

Find deals

Good to know

Low seasonApril
Cheapest flight$128
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Islip to Los Angeles

FAQs - booking California flights

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

    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 California.

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

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

    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 from Islip to California with an airline and back with another airline.

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

    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 from Islip to California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to California?

    The cheapest time of day to fly to California is generally in the morning, when round-trip flights cost $591 on average. Morning departures are around 13% cheaper than evening flights, on average. The most expensive time of day to fly to California is generally in the evening, which is peak travel time and where the average cost of a ticket is $678.

Reviews of the top airline flying from Islip to California

 
See real verified KAYAK customer reviews for airlines flying from Islip to California. 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 California? 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 4241 reviews
8.6Crew
8.1Boarding
7.5Entertainment
8.0Comfort
7.0Food
Airline reviews

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

10.0 ExcellentGordon, Jul 2025GEG - OAK
Read more Southwest reviews

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

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

It was a perfect flight in all aspects! Both legs!

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

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.

I will be flying again Southwest Airlines. Friendly crew, comfortable and affordable.

Everything you need to know for your flight from Islip to California

Information on your arrival and departure airports

Islip (ISP)

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