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

Tuesday, September 22nd, 2026

4 round-trip options

Returning
Mon, Sep 28, 20266 Day Trip
$744 USD
Returning
Tue, Sep 29, 20267 Day Trip
$742 USD
Returning
Fri, Oct 2, 202610 Day Trip
$742 USD
Returning
Mon, Oct 5, 202613 Day Trip
$732 USD