Madrid (MAD) to Boston (BOS) flight deal in economy from $520

Friday, September 18th, 2026

3 round-trip options

Returning
Sat, Sep 26, 20268 Day Trip
$611 USD
Returning
Sun, Sep 27, 20269 Day Trip
$633 USD
Returning
Wed, Sep 30, 202612 Day Trip
$616 USD