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

Return flights

01 Dec - 12 Dec	TAP
05 Dec - 12 Dec	TAP
05 Dec - 13 Dec	TAP
07 Dec - 14 Dec	Air Transat
03 Dec - 10 Dec	Air Transat
01 Dec - 14 Dec	American Airlines
05 Dec - 09 Dec	British Airways
05 Dec - 15 Dec	TAP
08 Dec - 15 Dec	TAP
01 Dec - 08 Dec	Delta
31 Dec - 24 Jan	Air Canada	direct
31 Dec - 12 Jan	Air Canada
31 Dec - 12 Jan	Lufthansa	direct
29 Dec - 24 Jan	Porter Airlines (Canada) Ltd
29 Dec - 24 Jan	Air Canada	direct
05 Dec - 07 Jan	TAP
30 Dec - 11 Jan	Aer Lingus
30 Dec - 12 Jan	Air Canada
30 Dec - 12 Jan	Lufthansa	direct
30 Dec - 10 Jan	FrenchBee

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 $425

Return flights