Cheapest return flights from Denver to San Jose in December from 254€

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

Return flights

04 Dec - 10 Dec Southwest Airlines
03 Dec - 06 Dec Southwest Airlines
09 Dec - 23 Dec Delta
11 Dec - 23 Dec Delta
10 Dec - 21 Dec Southwest Airlines
05 Dec - 13 Dec United
10 Dec - 23 Dec Southwest Airlines
12 Dec - 25 Dec Southwest Airlines
12 Dec - 26 Dec Frontier Airlines
28 Dec - 06 Jan Copa
12 Dec - 26 Dec United direct
30 Dec - 04 Jan Copa
22 Dec - 10 Jan United
27 Dec - 10 Jan United
25 Dec - 02 Jan Copa
26 Dec - 10 Jan United
27 Dec - 10 Jan Southwest Airlines direct

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

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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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