Cheapest one-way flights from Phoenix to San Diego in December from $28

AirHint found the following cheapest one-way flights from Phoenix (PHX) to San Diego (SAN) in December 2025 (see full year).

One-Way flights

02 Dec Alaska Airlines direct
04 Dec Alaska Airlines direct
03 Dec Alaska Airlines direct
05 Dec Alaska Airlines direct
06 Dec Alaska Airlines direct
10 Dec Frontier Airlines direct
01 Dec Frontier Airlines direct
30 Dec Frontier Airlines direct
20 Dec Frontier Airlines direct

Also check the deals for return flights from Phoenix to San Diego in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in San Diego

Cheap car rent in San Diego

Feel free to contact us with any feedback or request another flight research.