Cheapest return flights from Denver to San Jose in December from 242€

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

Return flights

05 Dec - 08 Dec United
06 Dec - 20 Dec United
05 Dec - 13 Dec United
06 Dec - 11 Dec United
12 Dec - 20 Dec United
10 Dec - 19 Dec United
07 Dec - 12 Dec Southwest Airlines
27 Dec - 10 Jan Frontier Airlines
26 Dec - 10 Jan Frontier Airlines
22 Dec - 10 Jan Frontier Airlines
29 Dec - 05 Jan Frontier Airlines
29 Dec - 02 Jan United
29 Dec - 05 Jan United direct
27 Dec - 10 Jan Southwest Airlines direct
25 Dec - 02 Jan Frontier Airlines
28 Dec - 03 Jan Frontier Airlines
25 Dec - 03 Jan Frontier Airlines

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

Powered by

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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Feel free to contact us with any feedback or request another flight research.