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

Return flights

31 Dec - 19 Jan	Lufthansa
31 Dec - 19 Jan	Air Canada	direct
31 Dec - 15 Jan	Lufthansa	direct
31 Dec - 22 Jan	Lufthansa	direct
29 Dec - 29 Jan	TAP
31 Dec - 12 Jan	Lufthansa
30 Dec - 13 Jan	Air Canada
30 Dec - 15 Jan	Lufthansa	direct
30 Dec - 13 Jan	Lufthansa	direct
30 Dec - 22 Jan	Lufthansa	direct
26 Dec - 30 Dec	Lufthansa	direct
26 Dec - 31 Dec	Air Canada	direct
29 Dec - 31 Dec	Air Transat
29 Dec - 31 Dec	Lufthansa	direct

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 $714

Return flights