AirHint found the following cheapest one-way flights from San Francisco (SFO) to Madrid (MAD) in March 2026 (see full year).
One-Way flights
| 23 Mar | FrenchBee | ||
| 31 Mar | TAP | ||
| 29 Mar | Austrian Airlines | ||
| 30 Mar | FrenchBee | ||
| 22 Mar | SWISS | ||
| 24 Mar | Lufthansa | ||
| 21 Mar | Frontier Airlines | ||
| 20 Mar | Lufthansa | ||
| 27 Mar | Frontier Airlines | ||
| 26 Mar | FrenchBee |
Also check the deals for return flights from San Francisco to Madrid in March.
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