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

Sunday, August 9th, 2026

10 round-trip options

Returning
Fri, Aug 14, 20265 Day Trip
$2,485 USD
Returning
Sat, Aug 15, 20266 Day Trip
$1,376 USD
Returning
Sun, Aug 16, 20267 Day Trip
$990 USD
Returning
Mon, Aug 17, 20268 Day Trip
$990 USD
Returning
Tue, Aug 18, 20269 Day Trip
$926 USD
Returning
Wed, Aug 19, 202610 Day Trip
$863 USD
Returning
Thu, Aug 20, 202611 Day Trip
$863 USD
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Fri, Aug 21, 202612 Day Trip
$869 USD
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Sat, Aug 22, 202613 Day Trip
$936 USD
Returning
Sun, Aug 23, 202614 Day Trip
$936 USD