Cheapest one-way flights from Ontario to Barcelona in March from $508

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

One-Way flights

24 Mar British Airways
17 Mar British Airways
15 Mar British Airways
18 Mar British Airways
03 Mar British Airways
08 Mar British Airways
09 Mar Iberia
04 Mar British Airways
31 Mar British Airways
19 Mar British Airways

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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