AirHint found the following cheapest one-way flights from San Francisco (SFO) to Barcelona (BCN) in October 2025 (see full year).
One-Way flights
| 27 Oct | TAP | ||
| 29 Oct | TAP | ||
| 31 Oct | TAP | ||
| 30 Oct | FrenchBee | ||
| 28 Oct | Flair Airlines |
Also check the deals for return flights from San Francisco to Barcelona in October.
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