AirHint found the following cheapest return flights from San Jose (SJC) to Barcelona (BCN) in December 2025 (see full year).

Return flights

30 Dec - 13 Jan	British Airways
31 Dec - 20 Jan	British Airways
30 Dec - 12 Jan	Iberia
31 Dec - 12 Jan	Iberia
26 Dec - 13 Jan	British Airways
29 Dec - 12 Jan	Iberia
30 Dec - 08 Jan	British Airways
25 Dec - 01 Jan	British Airways
29 Dec - 10 Jan	Iberia
29 Dec - 09 Jan	Iberia
25 Dec - 31 Dec	British Airways
25 Dec - 29 Dec	British Airways
28 Dec - 31 Dec	British Airways
27 Dec - 29 Dec	British Airways

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

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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Cheapest return flights from San Jose to Barcelona in December from $736

Return flights