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
Tuesday, December 29th, 2026
9 round-trip options
Returning
Sun, Jan 3, 2027•5 Day Trip
$1,328 USD
Returning
Mon, Jan 4, 2027•6 Day Trip
$1,094 USD
Returning
Tue, Jan 5, 2027•7 Day Trip
$882 USD
Returning
Wed, Jan 6, 2027•8 Day Trip
$871 USD
Returning
Fri, Jan 8, 2027•10 Day Trip
$871 USD
Returning
Sat, Jan 9, 2027•11 Day Trip
$931 USD
Returning
Sun, Jan 10, 2027•12 Day Trip
$931 USD
Returning
Mon, Jan 11, 2027•13 Day Trip
$931 USD
Returning
Tue, Jan 12, 2027•14 Day Trip
$835 USD