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

Tuesday, August 25th, 2026

3 round-trip options

Returning
Tue, Sep 1, 20267 Day Trip
$1,093 USD
Returning
Sun, Sep 6, 202612 Day Trip
$1,074 USD
Returning
Tue, Sep 8, 202614 Day Trip
$1,024 USD