Lisbon (LIS) to Seattle / Tacoma (SEA) cheap flight deal from $3737 USD in first class – flightdeals.net

This site is under active development. Please reach out with any issues or feedback.

flightdeals.net

About Premium Fare Deals

American Airlines

AAAmerican Airlines

British Airways

BABritish Airways

Round Trip•First Class

Portela Airport

Lisbon, Portugal

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$8,619 USD

-57%$3,737 USD

Verified 1 day ago

March 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

23 24 25 26 27 28 1 2 3 4$5,391 5 6 7 8 9 10 11$4,568 12$5,391 13 14 15 16 17 18$5,391 19 20$3,745 21 22 23$9,435 24$4,568 25$10,250 26 27 28 29 30$15,119 31 1 2 3 4 5

Extremely Rare Availability

3% of dates checked are available within 10% of the lowest price

Friday, March 20th, 2026

1 round-trip options

Returning

Mon, Mar 30, 2026•10 Day Trip

$3,745 USD