In general, when booking your flight to San Diego, May is the cheapest month on average.
From most locations, to find the best deals on airfare, our data shows that users booking 43 days before flying found the cheapest flight to San Diego.
From most locations, the cheapest flights to San Diego are found on a Tuesday. Booking a Sunday departure is usually the most expensive.
Generally, when visiting San Diego, noon flights represent the best value. afternoon flights are likely to have higher prices.