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

Thursday, September 17th, 2026

4 round-trip options

Returning
Wed, Sep 23, 20266 Day Trip
$917 USD
Returning
Thu, Sep 24, 20267 Day Trip
$917 USD
Returning
Sun, Sep 27, 202610 Day Trip
$967 USD
Returning
Wed, Sep 30, 202613 Day Trip
$917 USD