AirHint found the following cheapest return flights from Windsor Locks (BDL) to Madrid (MAD) in May 2026 (see full year).
Return flights
| 30 May - 11 Jun | Aer Lingus | ||
| 28 May - 01 Jun | Aer Lingus |
Also check the deals for one-way flights from Windsor Locks to Madrid in May.
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