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

Monday, October 5th, 2026

4 round-trip options

Returning
Sun, Oct 11, 20266 Day Trip
$806 USD
Returning
Mon, Oct 12, 20267 Day Trip
$792 USD
Returning
Thu, Oct 15, 202610 Day Trip
$742 USD
Returning
Sun, Oct 18, 202613 Day Trip
$780 USD