Portland (PDX) to Porto (OPO) flight deal in economy from $733

Tuesday, August 11th, 2026

8 round-trip options

Returning
Sun, Aug 16, 20265 Day Trip
$1,231 USD
Returning
Mon, Aug 17, 20266 Day Trip
$1,001 USD
Returning
Tue, Aug 18, 20267 Day Trip
$923 USD
Returning
Thu, Aug 20, 20269 Day Trip
$878 USD
Returning
Fri, Aug 21, 202610 Day Trip
$866 USD
Returning
Sat, Aug 22, 202611 Day Trip
$926 USD
Returning
Sun, Aug 23, 202612 Day Trip
$1,105 USD
Returning
Tue, Aug 25, 202614 Day Trip
$866 USD