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

Sunday, August 30th, 2026

6 round-trip options

Returning
Fri, Sep 4, 20265 Day Trip
$1,583 USD
Returning
Sat, Sep 5, 20266 Day Trip
$1,120 USD
Returning
Tue, Sep 8, 20269 Day Trip
$1,005 USD
Returning
Wed, Sep 9, 202610 Day Trip
$1,005 USD
Returning
Thu, Sep 10, 202611 Day Trip
$1,005 USD
Returning
Fri, Sep 11, 202612 Day Trip
$1,005 USD