Cheap flights from New Jersey to Los Angeles from $79

In general, September is the cheapest month to fly from New Jersey to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $287. If you aren’t able to travel during the month of September, then book flights to Ontario from New Jersey during October instead. Flights to Ontario in October, while not as cheap as those in September, still average around $287.

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $307. 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 $387.

In the afternoon is the cheapest time of day to fly from New Jersey to Ontario when you can find flight prices for as low as $335. Flying to Ontario in the afternoon 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 evening when prices are $337 on average. Flights to Ontario from New Jersey in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

You are more likely to see cheaper flights to Ontario from New Jersey when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $366 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from New Jersey for as low as $260 on momondo.

Delta, United Airlines, and Southwest 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 58% 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 2 per week as of March 2026. The most frequent departure day is Mon, with 50% 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 42m on average, while flying from Trenton to Los Angeles is 9h 08m on average. Los Angeles is the most popular airport in Ontario.