Cheapest return flights from Phoenix to San Diego in January from $73

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

Return flights

26 Jan - 02 Feb Frontier Airlines direct
30 Jan - 01 Feb Frontier Airlines direct
30 Jan - 02 Feb Frontier Airlines direct
17 Jan - 25 Jan Frontier Airlines direct
30 Jan - 31 Jan Frontier Airlines
25 Jan - 01 Feb Frontier Airlines direct
22 Jan - 26 Jan Frontier Airlines
22 Jan - 25 Jan Frontier Airlines
28 Jan - 04 Feb Frontier Airlines
15 Jan - 15 Jan Frontier Airlines direct
22 Jan - 26 Jan Frontier Airlines direct
14 Jan - 15 Jan Frontier Airlines direct
22 Jan - 25 Jan Frontier Airlines direct
19 Jan - 26 Jan Frontier Airlines direct
22 Jan - 29 Jan Frontier Airlines
28 Jan - 04 Feb Alaska Airlines direct

Also check the deals for one-way flights from Phoenix to San Diego in January.

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