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

Return flights

11 May - 18 May	SWISS
03 May - 10 May	KLM
05 May - 12 May	KLM
17 May - 24 May	KLM
19 May - 26 May	KLM
04 May - 11 May	KLM
06 May - 13 May	KLM
08 May - 15 May	KLM
18 May - 25 May	KLM
20 May - 27 May	KLM
22 May - 18 Jun	SWISS
27 May - 03 Jun	TAP
26 May - 02 Jun	KLM
28 May - 04 Jun	KLM
29 May - 05 Jun	KLM
30 May - 06 Jun	KLM
31 May - 07 Jun	TAP
25 May - 01 Jun	TAP
30 May - 20 Jun	KLM
27 May - 03 Jun	Air Canada	direct

Also check the deals for one-way flights from Montreal to Brussels 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 Brussels in May from 452€

Return flights