AirHint found the following cheapest one-way flights from San Francisco (SFO) to Barcelona (BCN) in March 2026 (see full year).
One-Way flights
| 01 Mar | Frontier Airlines | ||
| 08 Mar | Flair Airlines | ||
| 05 Mar | Flair Airlines | ||
| 15 Mar | WestJet | ||
| 04 Mar | TAP | ||
| 20 Mar | Alaska Airlines | ||
| 17 Mar | Aer Lingus | ||
| 24 Mar | Aer Lingus | ||
| 18 Mar | Frontier Airlines | ||
| 16 Mar | Aer Lingus |
Also check the deals for return flights from San Francisco to Barcelona in March.
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