Cheapest return flights from Denver to San Jose in December from $356

Best time to book flights for Denver (DEN) to San Jose (SJO) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to San Jose (SJO) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec Copa
10 Dec - 17 Dec American Airlines
06 Dec - 13 Dec American Airlines
13 Dec - 20 Dec United
26 Dec - 10 Jan Aeromexico
22 Dec - 10 Jan American Airlines
27 Dec - 10 Jan Copa
20 Dec - 03 Jan Copa
20 Dec - 03 Jan Southwest Airlines direct

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

Skyscanner

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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