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

Return flights

09 Dec - 16 Dec	Air Transat
07 Dec - 11 Dec	Air Canada
02 Dec - 11 Dec	TAP
07 Dec - 10 Dec	Air Canada
01 Dec - 10 Dec	Delta
02 Dec - 17 Dec	Delta
05 Dec - 11 Dec	Delta
11 Dec - 23 Dec	Delta
02 Dec - 10 Dec	Delta
01 Dec - 23 Dec	Delta
30 Dec - 22 Jan	Air Canada
30 Dec - 24 Jan	Air Canada
11 Dec - 12 Jan	TAP
11 Dec - 09 Jan	Azores Airlines
15 Dec - 08 Jan	Flair Airlines
10 Dec - 08 Jan	Icelandair
30 Dec - 10 Jan	Azores Airlines
14 Dec - 12 Jan	Virgin Atlantic
13 Dec - 11 Jan	Flair Airlines
30 Dec - 11 Jan	Lufthansa

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 404€

Return flights