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 $308 (return) on average. On the other hand, the most expensive months to fly this route on Delta are July and October, where the average cost of round-trip tickets is $410 and $409 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 $157 round-trip on the route from Phoenix Sky Harbor Intl Airport to San Diego. The most popular route is from Seattle to San Diego and the cheapest ticket found on this route in the last 5 days was $137 return.

Each week there are around 330 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 $493. On the other hand, the most expensive day to fly is Sunday, where prices are $547 on average.

The cheapest time of day to fly to San Diego with Delta is generally in the evening, when flights cost $438 on average.