Cheapest one-way flights from Phoenix to San Diego in January from $84

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

One-Way flights

16 Jan Frontier Airlines direct
27 Jan Frontier Airlines
17 Jan Frontier Airlines direct
25 Jan Frontier Airlines direct
22 Jan Frontier Airlines direct
21 Jan Frontier Airlines
24 Jan Frontier Airlines
23 Jan Frontier Airlines direct
18 Jan Frontier Airlines direct
19 Jan Frontier 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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