Cheap flights from Idaho to Los Angeles from $79

In general, January is the cheapest month to fly from Idaho to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $232. If you aren’t able to travel during the month of January, then book flights to Ontario from Idaho during August instead. Flights to Ontario in August, while not as cheap as those in January, still average around $235.

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $147. 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 Idaho to Ontario for around $427.

Fly from Boise Air Term. Gowen Fld to Ontario for the best Idaho - Ontario flight prices

You are more likely to see cheaper flights to Ontario from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $318 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Idaho for as low as $137 on momondo.

There is only 1 cabin class available to choose from on Idaho to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 24% on your flight if you consider stops on a Idaho to Ontario flight.

Southwest, Alaska Airlines, and Delta are the most popular carriers operating from Idaho to Ontario

Alaska Airlines, Delta and Allegiant Air are the top three most popular airlines that fly to Ontario from Idaho according to our data. Alaska Airlines is the first choice among our users, with 34% 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.

5 flights are operational weekly from Idaho to Ontario as of February 2026. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.

Average flight duration from Idaho to Ontario depends on which airport you fly into and out of. Flying from Boise to Los Angeles is 2h 15m on average, while flying from Hailey to Los Angeles is 2h 36m on average. Los Angeles is the most popular airport in Ontario.