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

Sunday, October 18th, 2026

4 round-trip options

Returning
Sat, Oct 24, 20266 Day Trip
$1,345 USD
Returning
Sun, Oct 25, 20267 Day Trip
$792 USD
Returning
Wed, Oct 28, 202610 Day Trip
$742 USD
Returning
Sat, Oct 31, 202613 Day Trip
$792 USD