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 8 hours agoDecember 2026
Mon
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Limited Availability
15% of dates checked are available within 10% of the lowest price
Wednesday, December 9th, 2026
9 round-trip options
Returning
Mon, Dec 14, 2026•5 Day Trip
$848 USD
Returning
Tue, Dec 15, 2026•6 Day Trip
$778 USD
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Wed, Dec 16, 2026•7 Day Trip
$783 USD
Returning
Thu, Dec 17, 2026•8 Day Trip
$783 USD
Returning
Sat, Dec 19, 2026•10 Day Trip
$833 USD
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Sun, Dec 20, 2026•11 Day Trip
$833 USD
Returning
Mon, Dec 21, 2026•12 Day Trip
$833 USD
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Tue, Dec 22, 2026•13 Day Trip
$778 USD
Returning
Wed, Dec 23, 2026•14 Day Trip
$783 USD