Cheap flights from Islip, New York to Los Angeles from $278

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $347. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Islip, New York to Ontario for around $596.

In the evening is the cheapest time of day to fly from Islip, New York to Ontario when you can find flight prices for as low as $364. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $455 on average. Flights to Ontario from Islip, New York in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Southwest is the most popular carrier operating from Islip Long Island to Ontario

United Airlines, JetBlue and American Airlines are the top three most popular airlines that fly to Ontario from Islip, New York according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 9 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.