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

Return flights

06 Oct - 13 Oct	Air Transat
02 Oct - 09 Oct	Air Transat
13 Oct - 20 Oct	Air Transat
01 Oct - 08 Oct	Air Transat
15 Oct - 22 Oct	Air Transat
03 Oct - 10 Oct	Air Transat
16 Oct - 23 Oct	Air Transat
12 Oct - 19 Oct	WestJet
10 Oct - 17 Oct	Air Transat
05 Oct - 12 Oct	FrenchBee
29 Oct - 05 Nov	Lufthansa
28 Oct - 04 Nov	British Airways
27 Oct - 03 Nov	British Airways
30 Oct - 06 Nov	Lufthansa
26 Oct - 02 Nov	British Airways
25 Oct - 01 Nov	Air Transat
31 Oct - 07 Nov	Air Transat

Also check the deals for one-way flights from Montreal to Basel in October.

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 October from $560

Return flights