Find a great deal and save up to 20% by booking at least 17 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Islip to California within the next two weeks, with the cheapest ticket starting at $75.
Flights from Islip to California lean towards being more expensive in December. Prices are generally better when you fly from Islip to California in April, with the cheapest ticket starting at $43.
The chart below displays the airlines Cheapflights users traveling from Islip to California choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
||$136||$405||No cancel fee||62%|
||$190||$464||No cancel fee||71%|
||$187||$597||No cancel fee||62%|