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

Return flights

01 Dec - 08 Dec	British Airways
08 Dec - 15 Dec	British Airways
03 Dec - 10 Dec	British Airways
09 Dec - 16 Dec	British Airways
10 Dec - 17 Dec	TAP
05 Dec - 12 Dec	TAP
07 Dec - 14 Dec	Air Transat
11 Dec - 18 Dec	Air Transat
06 Dec - 13 Dec	Air Transat
15 Dec - 22 Dec	Azores Airlines
30 Dec - 06 Jan	Air Transat
31 Dec - 07 Jan	British Airways
29 Dec - 05 Jan	Azores Airlines
21 Dec - 12 Jan	Lufthansa
25 Dec - 01 Jan	British Airways
20 Dec - 12 Jan	SWISS
28 Dec - 04 Jan	Air Transat
26 Dec - 02 Jan	British Airways
27 Dec - 03 Jan	British Airways

Also check the deals for one-way flights from Montreal to Basel 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 Basel in December from 474€

Return flights