Cheapest return flights from Ontario to Madrid in August from $580

AirHint found the following cheapest return flights from Ontario (ONT) to Madrid (MAD) in August 2026 (see full year).

Return flights

16 Aug - 25 Aug British Airways
08 Aug - 22 Aug British Airways
16 Aug - 31 Aug British Airways
15 Aug - 31 Aug British Airways
14 Aug - 30 Aug British Airways
16 Aug - 23 Aug British Airways
17 Aug - 13 Sep British Airways
02 Aug - 11 Aug British Airways
03 Aug - 10 Aug British Airways
21 Aug - 30 Aug British Airways
02 Aug - 09 Aug British Airways
23 Aug - 01 Sep jetBlue

Also check the deals for one-way flights from Ontario to Madrid in August.

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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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