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

Return flights

01 Dec - 07 Dec	TAP
06 Dec - 13 Dec	Air Transat
04 Dec - 12 Dec	Air Transat
04 Dec - 11 Dec	Air Transat
10 Dec - 17 Dec	FrenchBee
01 Dec - 08 Dec	Air Canada	direct
08 Dec - 15 Dec	Air Canada	direct
09 Dec - 16 Dec	Air Canada
29 Dec - 11 Jan	Air Canada
15 Dec - 22 Dec	Air Transat
29 Dec - 08 Jan	Air Canada	direct
29 Dec - 10 Jan	Air Canada	direct
28 Dec - 10 Jan	Air Canada	direct
11 Dec - 18 Dec	Air Canada
10 Dec - 02 Jan	Air Transat
28 Dec - 04 Jan	Air Transat
29 Dec - 05 Jan	Azores Airlines
30 Dec - 06 Jan	Air Transat
20 Dec - 03 Jan	Azores Airlines
25 Dec - 01 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 $578

Return flights