Seattle / Tacoma (SEA) to Lisbon (LIS) flight deal in economy from $740

Air CanadaACAir CanadaLufthansaLHLufthansaSwiss International Air LinesLXSwiss International Air LinesAustrian AirlinesOSAustrian AirlinesUnited AirlinesUAUnited Airlines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
PortugalLIS

Portela Airport

Lisbon, Portugal
$948 USD
-22%$740 USD
Verified about 11 hours ago
Limited Availability
15% of dates checked are available within 10% of the lowest price

Saturday, December 19th, 2026

9 round-trip options

Returning
Thu, Dec 24, 2026•5 Day Trip
$1,094 USD
Google Flights
Returning
Fri, Dec 25, 2026•6 Day Trip
$1,222 USD
Google Flights
Returning
Sat, Dec 26, 2026•7 Day Trip
$1,202 USD
Google Flights
Returning
Sun, Dec 27, 2026•8 Day Trip
$1,202 USD
Google Flights
Returning
Tue, Dec 29, 2026•10 Day Trip
$1,153 USD
Google Flights
Returning
Wed, Dec 30, 2026•11 Day Trip
$1,142 USD
Google Flights
Returning
Thu, Dec 31, 2026•12 Day Trip
$1,142 USD
Google Flights
Returning
Fri, Jan 1, 2027•13 Day Trip
$1,303 USD
Google Flights
Returning
Sat, Jan 2, 2027•14 Day Trip
$1,593 USD
Google Flights