$106 Find Cheap Flights from Islip to California - 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 Islip to California departing on 8/27. 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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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$283
San Francisco
San Francisco1 stop$311
San Diego
San Diego1 stop$347
San Jose
San Jose1 stop$458
Los Angeles
Los Angeles1 stop$283
San Francisco
San Francisco1 stop$311
San Diego
San Diego1 stop$347
San Jose
San Jose1 stop$458

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

Mon, Aug 31 - Wed, Sep 2
Frontier Logo
10:57 am - 9:44 pm
ISP
-
LAS
13h 47m
1 stop
Frontier Logo
9:41 pm - 9:53 am
LAS
-
ISP
9h 12m
1 stop
$250Frontier
Sat, Aug 29 - Tue, Sep 1
Frontier Logo
10:57 am - 9:44 pm
ISP
-
LAS
13h 47m
1 stop
Frontier Logo
9:41 pm - 9:53 am
LAS
-
ISP
9h 12m
1 stop
$250Frontier
Thu, Aug 27 - Mon, Aug 31
Frontier Logo
7:09 pm - 9:44 pm
ISP
-
LAS
29h 35m
1 stop
Frontier Logo
9:41 pm - 9:53 am
LAS
-
ISP
9h 12m
1 stop
$260Frontier
Tue, Sep 15 - Fri, Sep 25
Frontier Logo
5:43 pm - 8:07 am
ISP
-
LAS
17h 24m
1 stop
Frontier Logo
10:15 pm - 4:58 pm
LAS
-
ISP
15h 43m
1 stop
$277Frontier
Sat, Sep 12 - Tue, Sep 15
Southwest Logo
5:30 am - 10:55 am
ISP
-
SFO
8h 25m
1 stop
Southwest Logo
10:30 pm - 10:15 am
SFO
-
ISP
8h 45m
1 stop
$311Southwest
Tue, Sep 22 - Mon, Sep 28
Southwest Logo
3:20 pm - 10:40 pm
ISP
-
LAX
10h 20m
1 stop
Southwest Logo
10:35 pm - 10:15 am
LAX
-
ISP
8h 40m
1 stop
$311Southwest
Tue, Aug 25 - Tue, Sep 1
Southwest Logo
10:55 am - 6:05 pm
ISP
-
LAX
10h 10m
1 stop
Southwest Logo
10:35 pm - 10:15 am
LAX
-
ISP
8h 40m
1 stop
$311Southwest
Thu, Nov 19 - Mon, Nov 23
JetBlue Logo
12:00 pm - 10:10 pm
ISP
-
LAS
13h 10m
1 stop
JetBlue Logo
10:20 pm - 11:10 am
LAS
-
ISP
9h 50m
1 stop
$337JetBlue
Tue, Aug 25 - Tue, Sep 8
JetBlue Logo
4:58 pm - 10:49 pm
ISP
-
LAS
8h 51m
1 stop
JetBlue Logo
7:00 am - 7:33 pm
LAS
-
ISP
9h 33m
1 stop
$342JetBlue
Tue, Sep 1 - Tue, Sep 8
JetBlue Logo
4:58 pm - 10:49 pm
ISP
-
LAS
8h 51m
1 stop
JetBlue Logo
7:00 am - 7:33 pm
LAS
-
ISP
9h 33m
1 stop
$345JetBlue
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 is the cheapest month to fly from Islip to California?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Islip to California, 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 Islip to California is November, when tickets cost $0 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $936 and $588 respectively.

Find deals

Good to know

Cheapest flight

$106
Most popular time to fly with an average 5% increase in price.
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.

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 4229 reviews
8.6Crew
8.1Boarding
7.5Entertainment
7.0Food
8.0Comfort
Airline reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

8.0 ExcellentSean, Jul 2026
HOU - LGB
Read more Southwest reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

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

Information on your arrival and departure airports

Islip (ISP)