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

Return flights

03 Mar - 10 Mar	Iberia
09 Mar - 16 Mar	Iberia
10 Mar - 17 Mar	Iberia
02 Mar - 09 Mar	Iberia
17 Mar - 24 Mar	Iberia
29 Mar - 08 Apr	British Airways
09 Mar - 23 Mar	Iberia
29 Mar - 11 Apr	British Airways
11 Mar - 04 Apr	Iberia
19 Mar - 26 Mar	Iberia
15 Mar - 04 Apr	Iberia
16 Mar - 23 Mar	Iberia
12 Mar - 19 Mar	Iberia
10 Mar - 04 Apr	Iberia
17 Mar - 04 Apr	Iberia
29 Mar - 05 Apr	British Airways
26 Mar - 07 Apr	Iberia
19 Mar - 11 Apr	Iberia
12 Mar - 04 Apr	Air Canada
12 Mar - 22 Mar	Iberia

Also check the deals for one-way flights from Ontario to Barcelona in March.

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 March from $682

Return flights