Cheap Flights from San Diego to Ontario, CA, United States - SAN to ONT Last modified: Jun 26, 2016 7:48 AM
When Can I Buy the Cheapest Flight from San Diego to Ontario (SAN to ONT)?
Airlines can adjust prices for plane tickets from San Diego to Ontario based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.