AirHint found the following cheapest one-way flights from Boston (BOS) to Madrid (MAD) in April 2026 (see full year).
One-Way flights
| 21 Apr | Iberia | ||
| 15 Apr | Iberia | ||
| 30 Apr | Iberia | ||
| 07 Apr | Aer Lingus | ||
| 05 Apr | Aer Lingus | ||
| 10 Apr | Aer Lingus | ||
| 14 Apr | Iberia | ||
| 21 Apr | British Airways | direct | |
| 15 Apr | British Airways | direct | |
| 14 Apr | Iberia | direct |
Also check the deals for return flights from Boston to Madrid in April.
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.
Find us on social media