Cheapest return flights from Ontario to Porto in April from $842

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

Return flights

29 Apr - 14 May British Airways
24 Apr - 01 May Iberia
30 Apr - 07 May Iberia
15 Apr - 22 Apr British Airways
18 Apr - 25 Apr British Airways
25 Apr - 02 May Iberia
02 Apr - 09 Apr British Airways
13 Apr - 20 Apr British Airways

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

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