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 10 hours agoDecember 2026
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Limited Availability
15% of dates checked are available within 10% of the lowest price
Thursday, December 17th, 2026
9 round-trip options
Returning
Tue, Dec 22, 2026•5 Day Trip
$1,106 USD
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Wed, Dec 23, 2026•6 Day Trip
$1,094 USD
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Thu, Dec 24, 2026•7 Day Trip
$1,094 USD
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Fri, Dec 25, 2026•8 Day Trip
$1,222 USD
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Sun, Dec 27, 2026•10 Day Trip
$1,202 USD
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Mon, Dec 28, 2026•11 Day Trip
$1,198 USD
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Tue, Dec 29, 2026•12 Day Trip
$1,153 USD
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Wed, Dec 30, 2026•13 Day Trip
$1,142 USD
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Thu, Dec 31, 2026•14 Day Trip
$1,142 USD