Cheap flights from Puerto Rico to Los Angeles from $158

In general, January is the cheapest month to fly from Puerto Rico to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $288. If you aren’t able to travel during the month of January, then book flights to Ontario from Puerto Rico during July instead. Flights to Ontario in July, while not as cheap as those in January, still average around $333.

You are more likely to see cheaper flights to Ontario from Puerto Rico when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $451 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Puerto Rico for as low as $362 on momondo.

Frontier, Delta, and American Airlines are the most popular carriers operating from Puerto Rico to Ontario

American Airlines, United Airlines and JetBlue are the top three most popular airlines that fly to Ontario from Puerto Rico according to our data. American Airlines is the first choice among our users, with 51% 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.