AirHint found the following cheapest one-way flights from Boston (BOS) to Madrid (MAD) in December 2026 (see full year).
One-Way flights
| 28 Dec | Iberia | direct | |
| 01 Dec | Iberia | direct | |
| 02 Dec | Iberia | direct | |
| 30 Dec | Iberia | direct | |
| 29 Dec | Iberia | ||
| 08 Dec | Iberia | ||
| 13 Dec | Iberia | ||
| 27 Dec | Iberia | ||
| 05 Dec | Iberia | direct | |
| 26 Dec | Iberia | direct |
Also check the deals for return flights from Boston to Madrid in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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