AirHint found the following cheapest return flights from Toronto (YYZ) to Barcelona (BCN) in December 2025 (see full year).

Return flights

01 Dec - 08 Dec	Icelandair
04 Dec - 11 Dec	Icelandair
09 Dec - 16 Dec	Air Transat
02 Dec - 09 Dec	Icelandair
05 Dec - 12 Dec	Air Transat
15 Dec - 22 Dec	Porter Airlines (Canada) Ltd
07 Dec - 14 Dec	Icelandair
03 Dec - 10 Dec	Air Canada
06 Dec - 13 Dec	Air Transat
08 Dec - 15 Dec	TAP
29 Dec - 05 Jan	American Airlines
31 Dec - 20 Jan	British Airways
10 Dec - 06 Jan	Icelandair
30 Dec - 07 Jan	British Airways
31 Dec - 07 Jan	British Airways
08 Dec - 08 Jan	Air Canada
30 Dec - 24 Jan	British Airways
15 Dec - 10 Jan	TAP
13 Dec - 13 Jan	TAP
23 Dec - 13 Jan	British Airways

Also check the deals for one-way flights from Toronto to Barcelona in December.

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 Toronto to Barcelona in December from 349€

Return flights