Cheap flights from Utah to Los Angeles from $70

In general, February is the cheapest month to fly from Utah to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $220. If you aren’t able to travel during the month of February, then book flights to Ontario from Utah during April instead. Flights to Ontario in April, while not as cheap as those in February, still average around $244.

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $319. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Utah to Ontario for around $494.

In the afternoon is the cheapest time of day to fly from Utah to Ontario when you can find flight prices for as low as $339. 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 morning when prices are $353 on average. Flights to Ontario from Utah in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Salt Lake City to Ontario for the best Utah - Ontario flight prices

You are more likely to see cheaper flights to Ontario from Utah when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $337 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Utah for as low as $257 on momondo.

There are 3 cabin classes available to choose from on Utah to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest, American Airlines, and Delta are the most popular carriers operating from Utah to Ontario

Frontier, Delta and Allegiant Air are the top three most popular airlines that fly to Ontario from Utah according to our data. Frontier is the first choice among our users, with 49% 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 Utah and Ontario is 9 per day as of September 2026. The most frequent departure time is 3:00PM, with 43% of daily flights leaving in the afternoon.

As of September 2026, there are 66 flights per week flying from Utah to Ontario. The most common day of the week flights depart is Sun, with 18% of flights taking off on this day.