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

Return flights

03 Dec - 10 Dec	Air Transat
02 Dec - 09 Dec	British Airways
01 Dec - 08 Dec	British Airways
07 Dec - 14 Dec	Air Transat
05 Dec - 12 Dec	TAP
08 Dec - 15 Dec	TAP
04 Dec - 11 Dec	British Airways
28 Dec - 14 Jan	Lufthansa
09 Dec - 16 Dec	Lufthansa
10 Dec - 17 Dec	Air Transat
06 Dec - 13 Dec	Air Transat
31 Dec - 07 Jan	Lufthansa
30 Dec - 06 Jan	Lufthansa
29 Dec - 05 Jan	Lufthansa
26 Dec - 05 Jan	Lufthansa
23 Dec - 05 Jan	Lufthansa
25 Dec - 01 Jan	Lufthansa
28 Dec - 04 Jan	Lufthansa
22 Dec - 05 Jan	Lufthansa
22 Dec - 10 Jan	Air France

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 $695

Return flights