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
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Limited Availability
15% of dates checked are available within 10% of the lowest price
Monday, December 21st, 2026
9 round-trip options
Returning
Sat, Dec 26, 2026•5 Day Trip
$1,101 USD
Returning
Sun, Dec 27, 2026•6 Day Trip
$1,101 USD
Returning
Mon, Dec 28, 2026•7 Day Trip
$1,101 USD
Returning
Tue, Dec 29, 2026•8 Day Trip
$1,052 USD
Returning
Thu, Dec 31, 2026•10 Day Trip
$1,041 USD
Returning
Fri, Jan 1, 2027•11 Day Trip
$1,195 USD
Returning
Sat, Jan 2, 2027•12 Day Trip
$1,502 USD
Returning
Sun, Jan 3, 2027•13 Day Trip
$1,474 USD
Returning
Mon, Jan 4, 2027•14 Day Trip
$1,255 USD