Our data suggests that currently, the cheapest flights from San Diego are being offered by American Airlines, Allegiant Air, and Alaska Airlines. For example, American Airlines flights from San Diego to Houston Hobby Airport, start at $9, Allegiant Air flights from San Diego to Phoenix-Mesa Gateway Airport cost around $40, and Alaska Airlines flights from San Diego to Missoula are around $45.
Currently, the cheapest flight from San Diego found by our users is for $19 to Phoenix. Prices will vary according to several factors such as the departure date and time, but on average you can expect to pay around $96 to travel from San Diego to Phoenix.