Portland (PDX) to Lisbon (LIS) flight deal in economy from $745

Saturday, July 25th, 2026

6 round-trip options

Returning
Thu, Jul 30, 20265 Day Trip
$1,601 USD
Returning
Sat, Aug 1, 20267 Day Trip
$1,286 USD
Returning
Sun, Aug 2, 20268 Day Trip
$1,294 USD
Returning
Tue, Aug 4, 202610 Day Trip
$1,207 USD
Returning
Fri, Aug 7, 202613 Day Trip
$1,216 USD
Returning
Sat, Aug 8, 202614 Day Trip
$1,277 USD