Cheap flights from New Jersey to Los Angeles from $106

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $297. 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 New Jersey to Ontario for around $447.

In the evening is the cheapest time of day to fly from New Jersey to Ontario when you can find flight prices for as low as $323. 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 $334 on average. Flights to Ontario from New Jersey in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Frontier, JetBlue, and Delta are the most popular carriers operating from New Jersey to Ontario

United Airlines, Spirit Airlines and JetBlue are the top three most popular airlines that fly to Ontario from New Jersey according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

The number of flights available between New Jersey and Ontario is 14 per week as of May 2026. The most frequent departure day is Thu, with 29% of weekly flights leaving on this day.

Average flight duration from New Jersey to Ontario depends on which airport you fly into and out of. Flying from Newark to Los Angeles is 5h 37m on average, while flying from Trenton to Los Angeles is 10h 20m on average. Los Angeles is the most popular airport in Ontario.