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

Return flights

01 Apr - 15 Apr	British Airways
19 Apr - 26 Apr	British Airways
12 Apr - 26 Apr	British Airways
14 Apr - 09 May	British Airways
15 Apr - 09 May	British Airways
12 Apr - 02 May	British Airways
11 Apr - 02 May	British Airways
10 Apr - 02 May	British Airways
09 Apr - 02 May	British Airways
13 Apr - 09 May	British Airways
24 Apr - 10 May	British Airways
02 Apr - 24 Apr	British Airways

Also check the deals for one-way flights from Ontario to Barcelona 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 Barcelona in April from 764€

Return flights