Cheapest return flights from Ontario (ONT) to Porto (OPO), August

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
21 Aug 28 Aug Frontier Airlines
28 Aug 04 Sep British Airways
04 Aug 11 Aug KLM
06 Aug 13 Aug Turkish Airlines
31 Aug 07 Sep Turkish Airlines
03 Aug 10 Aug Turkish Airlines
07 Aug 14 Aug Turkish Airlines
27 Aug 03 Sep British Airways
29 Aug 05 Sep British Airways
30 Aug 06 Sep British Airways
01 Aug 08 Aug Turkish Airlines
21 Aug 24 Aug British Airways
01 Aug 09 Aug British Airways
02 Aug 09 Aug British Airways
09 Aug 16 Aug British Airways
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deals for one-way flights from Ontario to Porto in August.

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Updated Jul 8, 2026.

About these fares

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