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

Return flights

09 Dec - 16 Dec	SWISS
06 Dec - 13 Dec	Air Transat
05 Dec - 12 Dec	Air Transat
02 Dec - 09 Dec	Air Transat
10 Dec - 17 Dec	Air Transat
03 Dec - 10 Dec	FrenchBee
12 Dec - 23 Dec	Air Canada	direct
10 Dec - 17 Dec	Air Canada	direct
14 Dec - 23 Dec	Air Canada	direct
14 Dec - 22 Dec	Air Canada	direct
28 Dec - 08 Jan	Air Canada	direct
29 Dec - 17 Jan	Air Canada
27 Dec - 15 Jan	Air Canada
31 Dec - 07 Jan	Air Canada
15 Dec - 01 Jan	Air France
29 Dec - 06 Jan	TAP
23 Dec - 08 Jan	Air Canada	direct
25 Dec - 01 Jan	Air France
26 Dec - 01 Jan	SWISS
28 Dec - 06 Jan	British Airways

Also check the deals for one-way flights from Montreal 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 Montreal to Barcelona in December from 407€

Return flights