Portland (PDX) to Lisbon (LIS) flight deal in economy from $745
$970 USD
-23%$745 USD
Verified about 7 hours agoDecember 2026
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Fair Availability
30% of dates checked are available within 10% of the lowest price
Monday, December 7th, 2026
6 round-trip options
Returning
Sun, Dec 13, 2026•6 Day Trip
$832 USD
Returning
Tue, Dec 15, 2026•8 Day Trip
$782 USD
Returning
Wed, Dec 16, 2026•9 Day Trip
$778 USD
Returning
Fri, Dec 18, 2026•11 Day Trip
$916 USD
Returning
Sun, Dec 20, 2026•13 Day Trip
$838 USD
Returning
Mon, Dec 21, 2026•14 Day Trip
$838 USD