AirHint found the following cheapest return flights from Montreal (YUL) to Basel (BSL) in May 2026 (see full year).

Return flights

19 May - 26 May	SWISS
26 May - 02 Jun	Air Transat
21 May - 28 May	Azores Airlines
27 May - 03 Jun	TAP
25 May - 01 Jun	TAP
28 May - 04 Jun	British Airways
31 May - 07 Jun	British Airways
29 May - 05 Jun	British Airways
20 May - 27 May	Air Canada
18 May - 25 May	SWISS
24 May - 31 May	SWISS
06 May - 13 May	Air France
05 May - 12 May	Air France
13 May - 20 May	KLM
22 May - 29 May	Air Canada
23 May - 30 May	Lufthansa

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

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 May from 616€

Return flights