Portland (PDX) to Porto (OPO) flight deal in economy from $794

Saturday, December 5th, 2026

8 round-trip options

Returning
Thu, Dec 10, 20265 Day Trip
$1,884 USD
Returning
Fri, Dec 11, 20266 Day Trip
$958 USD
Returning
Sat, Dec 12, 20267 Day Trip
$859 USD
Returning
Sun, Dec 13, 20268 Day Trip
$855 USD
Returning
Mon, Dec 14, 20269 Day Trip
$855 USD
Returning
Thu, Dec 17, 202612 Day Trip
$816 USD
Returning
Fri, Dec 18, 202613 Day Trip
$947 USD
Returning
Sat, Dec 19, 202614 Day Trip
$866 USD