Cheap flights from Phoenix Sky Harbor Intl Airport to Los Angeles from $55

In general, September is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $158. If you aren’t able to travel during the month of September, then book flights to Ontario from Phoenix Sky Harbor Intl Airport during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $175.

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $245. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Phoenix Sky Harbor Intl Airport to Ontario for around $356.

At noon is the cheapest time of day to fly from Phoenix Sky Harbor Intl Airport to Ontario when you can find flight prices for as low as $265. Flying to Ontario at noon 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 $321 on average. Flights to Ontario from Phoenix Sky Harbor Intl Airport in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Phoenix Sky Harbor Intl to Ontario for the best Phoenix Sky Harbor Intl - Ontario flight prices

You are more likely to see cheaper flights to Ontario from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $242 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Phoenix Sky Harbor Intl Airport for as low as $120 on momondo.

No. A direct flight is the cheapest option for a flight between Phoenix Sky Harbor Intl Airport to Ontario.

As of May 2026, prices for Phoenix Sky Harbor Intl Airport to Ontario flights are approximately 129% more expensive when compared to flights at the same time last year.

Frontier and Southwest are the most popular carriers operating from Phoenix Sky Harbor Intl to Ontario

Frontier, Southwest and American Airlines are the top three most popular airlines that fly to Ontario from Phoenix Sky Harbor Intl Airport according to our data. Frontier is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

As of May 2026, there are 10 flights per day flying from Phoenix Sky Harbor Intl Airport to Ontario. The most common time of day flights depart is 3:00PM, with 46% of flights taking off in the afternoon.

As of May 2026, 70 flights take off from Phoenix Sky Harbor Intl Airport and land in Ontario each week. The most common flight departure day for this route is Fri, with 20% of weekly flights taking off on this day.