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

Wednesday, August 5th, 2026

10 round-trip options

Returning
Mon, Aug 10, 20265 Day Trip
$997 USD
Returning
Tue, Aug 11, 20266 Day Trip
$911 USD
Returning
Wed, Aug 12, 20267 Day Trip
$911 USD
Returning
Thu, Aug 13, 20268 Day Trip
$911 USD
Returning
Fri, Aug 14, 20269 Day Trip
$928 USD
Returning
Sat, Aug 15, 202610 Day Trip
$1,235 USD
Returning
Sun, Aug 16, 202611 Day Trip
$1,087 USD
Returning
Mon, Aug 17, 202612 Day Trip
$981 USD
Returning
Tue, Aug 18, 202613 Day Trip
$920 USD
Returning
Wed, Aug 19, 202614 Day Trip
$854 USD