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

Return flights

08 Jan - 10 Jan	Hawaiian Airlines
08 Jan - 15 Jan	Frontier Airlines
06 Jan - 29 Jan	British Airways
13 Jan - 20 Jan	British Airways
19 Jan - 28 Jan	British Airways
20 Jan - 29 Jan	British Airways
21 Jan - 04 Feb	British Airways
13 Jan - 27 Jan	British Airways
18 Jan - 01 Feb	British Airways
29 Jan - 05 Feb	Iberia
08 Jan - 22 Jan	British Airways
09 Jan - 16 Jan	British Airways
18 Jan - 25 Jan	British Airways
12 Jan - 07 Feb	British Airways
26 Jan - 21 Feb	British Airways
22 Jan - 05 Feb	Iberia

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

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 January from 593€

Return flights