Seattle / Tacoma (SEA) to Porto (OPO) flight deal from $351 USD in economy class – flightdeals.net

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Air France

Delta Air Lines

DLDelta Air Lines

KLM

One Way•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Francisco Sá Carneiro Airport

Porto, Portugal

$670 USD

-48%$351 USD

Verified Mar 22, 2026 at 7:10 AM

March 2026

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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 22$1,172 23$1,172 24$1,143 25$1,512 26$1,572 27$1,573 28$1,538 29$1,328 30$1,302 31$1,298 1$1,302 2$1,358 3$1,388 4$1,358 5$878

Limited Availability

15% of dates checked are available within 10% of the lowest price

Friday, March 13th, 2026

No flight details available for this date.