SEA to LIS from $380 in economy – flightdeals.net

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American Airlines

AAAmerican Airlines

Finnair

British Airways

BABritish Airways

Iberia Airlines

IBIberia Airlines

One Way•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Portela Airport

Lisbon, Portugal

$527 USD

-28%$380 USD

Verified 14 days ago

December 2026

Mon

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30$380 1$380 2$380 3$430 4$430 5$401 6$381 7$381 8$380 9$381 10$430 11$431 12$401 13$381 14$428 15$427 16$560 17$649 18$868 19$649 20$579 21$579 22$579 23$579 24$431 25$431 26$401 27$381 28$388 29$381 30$380 31$431 1 2 3

Fair Availability

30% of dates checked are available within 10% of the lowest price

Monday, December 14th, 2026

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