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

Monday, September 7th, 2026

4 round-trip options

Returning
Sun, Sep 13, 20266 Day Trip
$969 USD
Returning
Mon, Sep 14, 20267 Day Trip
$1,013 USD
Returning
Thu, Sep 17, 202610 Day Trip
$919 USD
Returning
Sun, Sep 20, 202613 Day Trip
$969 USD