AirHint found the following cheapest one-way flights from Boston (BOS) to Madrid (MAD) in September 2026 (see full year).
One-Way flights
| 06 Sep | British Airways | ||
| 17 Sep | SWISS | ||
| 24 Sep | LEVEL | ||
| 20 Sep | Aer Lingus | ||
| 24 Sep | jetBlue | direct | |
| 17 Sep | jetBlue | direct | |
| 20 Sep | Iberia | direct | |
| 21 Sep | Iberia | direct | |
| 22 Sep | Iberia | direct | |
| 27 Sep | Iberia | direct |
Also check the deals for return flights from Boston to Madrid in September.
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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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