Travelers have found that booking a Thursday departure is the best way to save up to 19% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 35 days in advance, which can save you up to 42% on flights from Ontario to San Diego compared to booking the week you need them. Waiting 35 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $381. For sooner than that we have options available in the next 3 days from $460.
Flights from Ontario to San Diego lean towards being more expensive in December. Prices are generally better when you fly from Ontario to San Diego in August, with the cheapest ticket starting at $138.
Unlike in the morning, when flights are generally more expensive, you can save up to 47% on flights from Ontario to San Diego by exploring options for tickets at noon.