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

Return flights

20 May - 27 May	British Airways
27 May - 03 Jun	British Airways
26 May - 02 Jun	British Airways
28 May - 04 Jun	Air Transat
21 May - 28 May	Air Transat
31 May - 07 Jun	British Airways
25 May - 01 Jun	Air Transat
30 May - 06 Jun	British Airways
24 May - 31 May	Air Transat
22 May - 29 May	Air Transat
29 May - 05 Jun	British Airways
17 May - 24 May	Air Transat
19 May - 26 May	Air Transat
05 May - 12 May	Air Transat
12 May - 19 May	Air Transat
23 May - 30 May	Air Transat
07 May - 14 May	Air Transat

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 561€

Return flights