Cheapest one-way flights from Phoenix to San Diego in January from 25€

AirHint found the following cheapest one-way flights from Phoenix (PHX) to San Diego (SAN) in January 2026 (see full year).

One-Way flights

07 Jan Frontier Airlines direct
11 Jan Frontier Airlines direct
08 Jan Frontier Airlines direct
09 Jan Frontier Airlines direct
14 Jan Frontier Airlines direct
12 Jan Frontier Airlines direct
10 Jan Frontier Airlines direct
25 Jan Frontier Airlines direct
28 Jan Frontier Airlines
20 Jan Southwest Airlines direct

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

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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.

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