AirHint found the following cheapest one-way flights from Boston (BOS) to Madrid (MAD) in March 2026 (see full year).
One-Way flights
| 17 Mar | LEVEL | ||
| 03 Mar | LEVEL | ||
| 29 Mar | TAP | ||
| 02 Mar | LEVEL | ||
| 11 Mar | SWISS | ||
| 16 Mar | TAP | ||
| 31 Mar | TAP | ||
| 01 Mar | TAP | ||
| 01 Mar | Iberia | direct | |
| 02 Mar | Iberia | direct |
Also check the deals for return flights from Boston to Madrid in March.
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