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

Sunday, December 13th, 2026

8 round-trip options

Returning
Fri, Dec 18, 20265 Day Trip
$1,873 USD
Returning
Sat, Dec 19, 20266 Day Trip
$1,111 USD
Returning
Sun, Dec 20, 20267 Day Trip
$955 USD
Returning
Mon, Dec 21, 20268 Day Trip
$860 USD
Returning
Tue, Dec 22, 20269 Day Trip
$936 USD
Returning
Fri, Dec 25, 202612 Day Trip
$810 USD
Returning
Sat, Dec 26, 202613 Day Trip
$1,048 USD
Returning
Sun, Dec 27, 202614 Day Trip
$1,118 USD