Cheapest one-way flights from Ontario to Barcelona in March from $561

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

One-Way flights

27 Mar Frontier Airlines
23 Mar British Airways
24 Mar British Airways
15 Mar British Airways
21 Mar British Airways
19 Mar British Airways
25 Mar British Airways
31 Mar Iberia
28 Mar British Airways
30 Mar Iberia

Also check the deals for return flights from Ontario to Barcelona in March.

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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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