Cheapest return flights from Ontario to Madrid in May from $609

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

Return flights

01 May - 14 May British Airways
06 May - 15 May British Airways
17 May - 26 May British Airways
05 May - 19 May British Airways
05 May - 14 May British Airways
19 May - 31 May Air Canada
10 May - 17 May British Airways
05 May - 24 May British Airways
04 May - 17 May British Airways
21 May - 02 Jun British Airways
15 May - 29 May Air Europa
23 May - 06 Jun British Airways
28 May - 07 Jun British Airways
30 May - 07 Jun British Airways
27 May - 02 Jun British Airways
22 May - 01 Jun Iberia
30 May - 05 Jun British Airways
27 May - 15 Jun British Airways
29 May - 05 Jun Iberia
29 May - 21 Jun British Airways

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

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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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