Seattle / Tacoma (SEA) to Lisbon (LIS) flight deal in economy from $740
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
LISPortela Airport
Lisbon, Portugal
$948 USD
-22%$740 USD
Verified about 11 hours agoDecember 2026
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Limited Availability
15% of dates checked are available within 10% of the lowest price
Monday, December 7th, 2026
9 round-trip options
Returning
Sat, Dec 12, 2026•5 Day Trip
$871 USD
Returning
Sun, Dec 13, 2026•6 Day Trip
$847 USD
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Mon, Dec 14, 2026•7 Day Trip
$832 USD
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Tue, Dec 15, 2026•8 Day Trip
$784 USD
Returning
Thu, Dec 17, 2026•10 Day Trip
$782 USD
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Fri, Dec 18, 2026•11 Day Trip
$784 USD
Returning
Sat, Dec 19, 2026•12 Day Trip
$832 USD
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Sun, Dec 20, 2026•13 Day Trip
$832 USD
Returning
Mon, Dec 21, 2026•14 Day Trip
$832 USD