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

Thursday, December 31st, 2026

9 round-trip options

Returning
Tue, Jan 5, 2027•5 Day Trip
$929 USD
Google Flights
Returning
Wed, Jan 6, 2027•6 Day Trip
$921 USD
Google Flights
Returning
Thu, Jan 7, 2027•7 Day Trip
$921 USD
Google Flights
Returning
Fri, Jan 8, 2027•8 Day Trip
$921 USD
Google Flights
Returning
Sun, Jan 10, 2027•10 Day Trip
$981 USD
Google Flights
Returning
Mon, Jan 11, 2027•11 Day Trip
$979 USD
Google Flights
Returning
Tue, Jan 12, 2027•12 Day Trip
$874 USD
Google Flights
Returning
Wed, Jan 13, 2027•13 Day Trip
$873 USD
Google Flights
Returning
Thu, Jan 14, 2027•14 Day Trip
$873 USD
Google Flights