AirHint found the following cheapest one-way flights from San Francisco (SFO) to Barcelona (BCN) in December 2025 (see full year).
One-Way flights
| 04 Dec | WestJet | ||
| 08 Dec | TAP | ||
| 02 Dec | WestJet | ||
| 03 Dec | TAP | ||
| 01 Dec | TAP | ||
| 31 Dec | TAP | ||
| 29 Dec | TAP | ||
| 05 Dec | FrenchBee | ||
| 07 Dec | Lufthansa | ||
| 30 Dec | Lufthansa |
Also check the deals for return flights from San Francisco to Barcelona in December.
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