Cheapest return flights from Washington to Porto in April from $593

AirHint found the following cheapest return flights from Washington (DCA) to Porto (OPO) in April 2026 (see full year).

Return flights

07 Apr - 14 Apr Delta
14 Apr - 21 Apr Delta
08 Apr - 15 Apr British Airways
15 Apr - 22 Apr British Airways
22 Apr - 29 Apr British Airways
06 Apr - 13 Apr jetBlue
12 Apr - 19 Apr Air Canada
22 Apr - 13 May British Airways
12 Apr - 12 May British Airways
13 Apr - 20 Apr British Airways
23 Apr - 30 Apr British Airways
03 Apr - 13 Apr British Airways
24 Apr - 01 May Iberia

Also check the deals for one-way flights from Washington to Porto in April.

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