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

Thursday, December 17th, 2026

8 round-trip options

Returning
Tue, Dec 22, 20265 Day Trip
$1,213 USD
Returning
Wed, Dec 23, 20266 Day Trip
$1,213 USD
Returning
Thu, Dec 24, 20267 Day Trip
$1,000 USD
Returning
Fri, Dec 25, 20268 Day Trip
$1,102 USD
Returning
Sat, Dec 26, 20269 Day Trip
$1,259 USD
Returning
Tue, Dec 29, 202612 Day Trip
$1,192 USD
Returning
Wed, Dec 30, 202613 Day Trip
$1,275 USD
Returning
Thu, Dec 31, 202614 Day Trip
$1,037 USD