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

Return flights

25 May - 01 Jun	Air Transat
19 May - 26 May	British Airways
27 May - 03 Jun	Air Transat
31 May - 07 Jun	Air Transat
24 May - 31 May	Air Transat
21 May - 28 May	Air Transat
28 May - 04 Jun	Air Transat
22 May - 29 May	Air Transat
30 May - 06 Jun	Air Transat
23 May - 30 May	Air Transat
18 May - 25 May	SWISS
06 May - 13 May	Air Canada
05 May - 12 May	Air France
04 May - 11 May	Air Canada
13 May - 20 May	KLM

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 $757

Return flights