SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
LISPortela Airport
Lisbon, Portugal
$796 USD
-44%$446 USD
Verified Nov 29, 2025 at 10:15 AMDecember 2025
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Fair Availability
20% of dates checked are available within 10% of the lowest price
Thursday, December 18th, 2025
10 round-trip options
Returning
Tue, Dec 23, 2025•5 Day Trip
$1,126 USD
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Wed, Dec 24, 2025•6 Day Trip
$1,110 USD
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Thu, Dec 25, 2025•7 Day Trip
$1,130 USD
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Fri, Dec 26, 2025•8 Day Trip
$1,322 USD
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Sat, Dec 27, 2025•9 Day Trip
$1,327 USD
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Sun, Dec 28, 2025•10 Day Trip
$1,631 USD
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Mon, Dec 29, 2025•11 Day Trip
$1,848 USD
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Tue, Dec 30, 2025•12 Day Trip
$1,645 USD
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Wed, Dec 31, 2025•13 Day Trip
$1,749 USD
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Thu, Jan 1, 2026•14 Day Trip
$2,016 USD