Seattle / Tacoma (SEA) to Lisbon (LIS) flight deal from $664 USD in economy class – flightdeals.net

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Air France

Delta Air Lines

DLDelta Air Lines

KLM

Round Trip•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Portela Airport

Lisbon, Portugal

$985 USD

-33%$664 USD

Verified Mar 21, 2026 at 10:05 PM

March 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21$12,710 22$825 23$664 24$798 25$922 26$1,400 27$994 28$825 29$789 30$739 31$739 1$922 2$804 3$977 4$799 5$739

Fair Availability

20% of dates checked are available within 10% of the lowest price

Saturday, March 21st, 2026

3 round-trip options

Returning

Mon, Mar 30, 2026•9 Day Trip

$13,011 USD

Returning

Wed, Apr 1, 2026•11 Day Trip

$12,710 USD

Returning

Fri, Apr 3, 2026•13 Day Trip

$19,915 USD