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

Return flights

21 Jan - 27 Jan	United
20 Jan - 27 Jan	United
21 Jan - 29 Jan	United
26 Jan - 11 Feb	United
26 Jan - 10 Feb	United
17 Jan - 21 Jan	United
22 Jan - 30 Jan	United
29 Jan - 31 Jan	United
22 Jan - 26 Jan	United
26 Jan - 13 Feb	United
29 Jan - 05 Feb	Southwest Airlines
25 Jan - 31 Jan	Frontier Airlines
17 Jan - 27 Jan	United
26 Jan - 12 Feb	Frontier Airlines
28 Jan - 01 Feb	Frontier Airlines
29 Jan - 22 Feb	Frontier Airlines

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

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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Cheapest return flights from Phoenix to San Jose in January from 287€

Return flights