Cheapest return flights from Seattle to San Jose in January from 298€

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

Return flights

27 Jan - 05 Feb Alaska Airlines
01 Jan - 31 Jan United
25 Jan - 29 Jan United
20 Jan - 27 Jan United
27 Jan - 31 Jan United
29 Jan - 03 Feb United
12 Jan - 24 Jan United
26 Jan - 05 Feb Frontier Airlines
16 Jan - 21 Jan Frontier Airlines
09 Jan - 20 Jan Frontier Airlines
26 Jan - 02 Feb Alaska Airlines
13 Jan - 25 Jan Hawaiian Airlines
31 Jan - 09 Feb United
13 Jan - 16 Jan United

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

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