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

Sunday, December 6th, 2026

8 round-trip options

Returning
Fri, Dec 11, 20265 Day Trip
$1,873 USD
Returning
Sat, Dec 12, 20266 Day Trip
$995 USD
Returning
Sun, Dec 13, 20267 Day Trip
$844 USD
Returning
Mon, Dec 14, 20268 Day Trip
$844 USD
Returning
Tue, Dec 15, 20269 Day Trip
$794 USD
Returning
Fri, Dec 18, 202612 Day Trip
$810 USD
Returning
Sat, Dec 19, 202613 Day Trip
$861 USD
Returning
Sun, Dec 20, 202614 Day Trip
$910 USD