Cheapest return flights from Denver to San Jose in December from 248€

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

Return flights

05 Dec - 13 Dec United
06 Dec - 20 Dec United
12 Dec - 20 Dec United
02 Dec - 03 Dec Frontier Airlines
07 Dec - 12 Dec Southwest Airlines
28 Dec - 31 Dec Frontier Airlines
27 Dec - 10 Jan Frontier Airlines
22 Dec - 10 Jan Frontier Airlines
26 Dec - 10 Jan Frontier Airlines
20 Dec - 30 Dec Frontier Airlines
20 Dec - 28 Dec Frontier Airlines
28 Dec - 04 Jan Frontier Airlines
22 Dec - 29 Dec Frontier Airlines
20 Dec - 27 Dec Frontier Airlines
18 Dec - 05 Jan Frontier Airlines
19 Dec - 05 Jan Frontier Airlines
27 Dec - 10 Jan Southwest Airlines direct
28 Dec - 04 Jan United direct

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

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