Cheapest return flights from Denver to San Jose in December from $315

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

Return flights

01 Dec - 08 Dec American Airlines
06 Dec - 14 Dec American Airlines
06 Dec - 20 Dec American Airlines
07 Dec - 12 Dec Southwest Airlines
05 Dec - 13 Dec United direct
31 Dec - 07 Jan jetBlue
14 Dec - 20 Dec Southwest Airlines
06 Dec - 20 Dec Southwest Airlines direct
30 Dec - 06 Jan jetBlue
27 Dec - 10 Jan Frontier Airlines
17 Dec - 08 Jan jetBlue
22 Dec - 10 Jan Frontier Airlines
26 Dec - 10 Jan Frontier Airlines
22 Dec - 29 Dec Frontier Airlines
19 Dec - 10 Jan Frontier Airlines
23 Dec - 30 Dec Aeromexico
23 Dec - 30 Dec United 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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