Seattle / Tacoma (SEA) to Madrid (MAD) flight deal in economy from $732

Sunday, September 13th, 2026

4 round-trip options

Returning
Sat, Sep 19, 20266 Day Trip
$1,211 USD
Returning
Sun, Sep 20, 20267 Day Trip
$969 USD
Returning
Wed, Sep 23, 202610 Day Trip
$919 USD
Returning
Sat, Sep 26, 202613 Day Trip
$969 USD