Cheapest return flights from Denver to San Jose in January from 245€

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

Return flights

31 Jan - 07 Feb United
03 Jan - 10 Jan Frontier Airlines
31 Jan - 07 Feb Southwest Airlines direct
02 Jan - 10 Jan Frontier Airlines
24 Jan - 31 Jan Southwest Airlines direct
01 Jan - 08 Jan Frontier Airlines
01 Jan - 09 Jan Frontier Airlines

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