Cheapest return flights from San Francisco to Barcelona in December from 378€

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

Return flights

29 Dec - 12 Jan British Airways
02 Dec - 09 Dec Lufthansa
06 Dec - 13 Dec Lufthansa
31 Dec - 11 Jan British Airways
11 Dec - 18 Jan Lufthansa
11 Dec - 16 Dec British Airways
01 Dec - 08 Dec SWISS
03 Dec - 07 Dec TAP
11 Dec - 17 Dec United
11 Dec - 14 Dec United
06 Dec - 18 Dec Lufthansa
15 Dec - 14 Jan Air France
14 Dec - 12 Jan Air France
12 Dec - 14 Dec United
14 Dec - 25 Dec Air France
26 Dec - 13 Jan TAP
06 Dec - 10 Jan British Airways
29 Dec - 10 Jan SWISS
14 Dec - 11 Jan Aer Lingus
15 Dec - 09 Jan KLM

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

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