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
Thursday, December 24th, 2026
9 round-trip options
Returning
Tue, Dec 29, 2026•5 Day Trip
$918 USD
Returning
Wed, Dec 30, 2026•6 Day Trip
$935 USD
Returning
Thu, Dec 31, 2026•7 Day Trip
$935 USD
Returning
Fri, Jan 1, 2027•8 Day Trip
$1,329 USD
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Sun, Jan 3, 2027•10 Day Trip
$1,344 USD
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Mon, Jan 4, 2027•11 Day Trip
$1,023 USD
Returning
Tue, Jan 5, 2027•12 Day Trip
$918 USD
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Wed, Jan 6, 2027•13 Day Trip
$935 USD
Returning
Thu, Jan 7, 2027•14 Day Trip
$935 USD