Cheapest return flights from Denver to San Jose in January from 240€

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

Return flights

23 Jan - 26 Jan United
22 Jan - 26 Jan United
17 Jan - 26 Jan Frontier Airlines
19 Jan - 27 Jan United
17 Jan - 25 Jan Frontier Airlines
18 Jan - 26 Jan Frontier Airlines
30 Jan - 02 Feb Copa
29 Jan - 02 Feb Copa
12 Jan - 19 Jan Frontier Airlines
12 Jan - 20 Jan Frontier Airlines
13 Jan - 19 Jan Frontier Airlines
30 Jan - 08 Feb United
24 Jan - 31 Jan Southwest Airlines

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

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