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 10 hours ago
Limited Availability
15% of dates checked are available within 10% of the lowest price

Tuesday, July 21st, 2026

7 round-trip options

Returning
Sun, Jul 26, 2026•5 Day Trip
$1,573 USD
Google Flights
Returning
Mon, Jul 27, 2026•6 Day Trip
$1,452 USD
Google Flights
Returning
Wed, Jul 29, 2026•8 Day Trip
$1,420 USD
Google Flights
Returning
Fri, Jul 31, 2026•10 Day Trip
$1,500 USD
Google Flights
Returning
Sat, Aug 1, 2026•11 Day Trip
$1,570 USD
Google Flights
Returning
Sun, Aug 2, 2026•12 Day Trip
$1,525 USD
Google Flights
Returning
Mon, Aug 3, 2026•13 Day Trip
$1,452 USD
Google Flights