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

Sunday, September 6th, 2026

4 round-trip options

Returning
Sat, Sep 12, 20266 Day Trip
$1,127 USD
Returning
Sun, Sep 13, 20267 Day Trip
$969 USD
Returning
Wed, Sep 16, 202610 Day Trip
$919 USD
Returning
Sat, Sep 19, 202613 Day Trip
$969 USD