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

Sunday, September 20th, 2026

3 round-trip options

Returning
Mon, Sep 28, 20268 Day Trip
$616 USD
Returning
Tue, Sep 29, 20269 Day Trip
$616 USD
Returning
Fri, Oct 2, 202612 Day Trip
$633 USD