Seattle / Tacoma (SEA) to Lisbon (LIS) cheap flight deal from $494 USD in economy class

ACAir Canada

LHLufthansa

LXSwiss International Air Lines

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

LIS

Portela Airport

Lisbon, Portugal

$749 USD

-34%$494 USD

Verified Sep 21, 2025 at 4:32 PM

October 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29$649 30$724 1$833 2$731 3$714 4$709 5$667 6$649 7$649 8$671 9$731 10$727 11$662 12$644 13$576 14$596 15$669 16$591 17$657 18$591 19$576 20$569 21$494 22$494 23$509 24$509 25$499 26$499 27$499 28$499 29$517 30$519 31$536 1 2

Fair Availability

36% of dates checked are available within 10% of the lowest price

Sunday, October 19th, 2025

10 round-trip options

Returning

Fri, Oct 24, 2025•5 Day Trip

$1,214 USD

Google Flights

Returning

Sat, Oct 25, 2025•6 Day Trip

$1,018 USD

Google Flights

Returning

Sun, Oct 26, 2025•7 Day Trip

$636 USD

Google Flights

Returning

Mon, Oct 27, 2025•8 Day Trip

$720 USD

Google Flights

Returning

Tue, Oct 28, 2025•9 Day Trip

$597 USD

Google Flights

Returning

Wed, Oct 29, 2025•10 Day Trip

$587 USD

Google Flights

Returning

Thu, Oct 30, 2025•11 Day Trip

$597 USD

Google Flights

Returning

Fri, Oct 31, 2025•12 Day Trip

$576 USD

Google Flights

Returning

Sat, Nov 1, 2025•13 Day Trip

$674 USD

Google Flights

Returning

Sun, Nov 2, 2025•14 Day Trip

$777 USD

Google Flights