Portland (PDX) to Lisbon (LIS) flight deal in economy from $745
$970 USD
-23%$745 USD
Verified about 7 hours agoSeptember 2026
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Fair Availability
30% of dates checked are available within 10% of the lowest price
Saturday, September 5th, 2026
6 round-trip options
Returning
Thu, Sep 10, 2026•5 Day Trip
$1,600 USD
Returning
Fri, Sep 11, 2026•6 Day Trip
$1,568 USD
Returning
Mon, Sep 14, 2026•9 Day Trip
$1,028 USD
Returning
Tue, Sep 15, 2026•10 Day Trip
$968 USD
Returning
Wed, Sep 16, 2026•11 Day Trip
$968 USD
Returning
Thu, Sep 17, 2026•12 Day Trip
$972 USD