Find cheap Delta flights to San Diego from $79 - Compare and Save

The cheapest month for Delta flights to San Diego is January, where tickets cost $322 (return) on average. On the other hand, the most expensive months to fly this route on Delta are July and June, where the average cost of round-trip tickets is $407 and $393 respectively.

For the absolute cheapest price on Delta, our data suggests you should book 4 weeks before departure.

The cheapest airline ticket to San Diego from the United States with Delta in the last 5 days was $79 one-way, and $141 round-trip on the route from San Francisco to San Diego. The most popular route is from Boston to San Diego and the cheapest ticket found on this route in the last 5 days was $257 return.

Each week there are around 309 direct flights from within the United States to San Diego. The most common day for departures is Sunday, with 21% of flights taking off on this day.

Based on KAYAK data, the cheapest day to fly to San Diego is Friday where tickets can be as cheap as $438. On the other hand, the most expensive day to fly is Sunday, where prices are $526 on average.

The cheapest time of day to fly to San Diego with Delta is generally at noon, when flights cost $410 on average.