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

Return flights

21 Apr - 28 Apr	Iberia
30 Apr - 14 May	Iberia
02 Apr - 16 Apr	Iberia
01 Apr - 15 Apr	Iberia
27 Apr - 11 May	British Airways
20 Apr - 27 Apr	Iberia
02 Apr - 10 Apr	Iberia
30 Apr - 17 May	Iberia
12 Apr - 19 Apr	Iberia
09 Apr - 19 Apr	Iberia
05 Apr - 12 Apr	Iberia
04 Apr - 11 Apr	Iberia
04 Apr - 12 Apr	Iberia

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

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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Cheapest return flights from Ontario to Madrid in April from 596€

Return flights