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

Return flights

13 Dec - 20 Dec	SWISS
01 Dec - 15 Dec	TAP
03 Dec - 10 Dec	TAP
08 Dec - 15 Dec	TAP
12 Dec - 17 Dec	Delta
10 Dec - 17 Dec	Air France
11 Dec - 18 Dec	Air France
05 Dec - 12 Dec	TAP
07 Dec - 14 Dec	TAP
01 Dec - 08 Dec	Air France
28 Dec - 04 Jan	SWISS
26 Dec - 29 Jan	KLM
31 Dec - 07 Jan	British Airways
31 Dec - 10 Jan	Air Canada	direct
29 Dec - 05 Jan	Air Transat
30 Dec - 06 Jan	Air France
19 Dec - 20 Jan	TAP
28 Dec - 06 Jan	British Airways
26 Dec - 02 Jan	KLM
25 Dec - 01 Jan	Air France

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 379€

Return flights