AirHint found the following cheapest one-way flights from Madrid (MAD) to Boston (BOS) in May 2026 (see full year).
One-Way flights
| 27 May | Iberia Express | ||
| 14 May | Iberia | ||
| 11 May | TAP | ||
| 15 May | Ryanair | ||
| 16 May | TAP | ||
| 11 May | Finnair | direct | |
| 27 May | Finnair | direct | |
| 14 May | Finnair | direct | |
| 30 May | TAP | ||
| 13 May | Iberia | direct |
Also check the deals for return flights from Madrid to Boston in May.
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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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