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

Monday, September 7th, 2026

3 round-trip options

Returning
Tue, Sep 15, 20268 Day Trip
$622 USD
Returning
Wed, Sep 16, 20269 Day Trip
$632 USD
Returning
Sat, Sep 19, 202612 Day Trip
$649 USD