Cheapest one-way flights from Seattle to Porto in April from $240

AirHint found the following cheapest one-way flights from Seattle (SEA) to Porto (OPO) in April 2026 (see full year).

One-Way flights

19 Apr Air France
21 Apr Delta
13 Apr British Airways
14 Apr British Airways
15 Apr British Airways
20 Apr British Airways
22 Apr British Airways
26 Apr British Airways
08 Apr British Airways
07 Apr British Airways

Also check the deals for return flights from Seattle to Porto in April.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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