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

Return flights

04 May - 11 May	British Airways
06 May - 13 May	British Airways
14 May - 21 May	British Airways
20 May - 27 May	British Airways
05 May - 12 May	British Airways
07 May - 14 May	British Airways
19 May - 26 May	British Airways
18 May - 25 May	British Airways
08 May - 15 May	KLM
10 May - 17 May	KLM
25 May - 01 Jun	TAP
27 May - 03 Jun	TAP
31 May - 07 Jun	TAP
17 May - 07 Jun	TAP
21 May - 04 Jun	British Airways
26 May - 02 Jun	British Airways
28 May - 04 Jun	British Airways
29 May - 04 Jun	British Airways
21 May - 04 Jun	Air Canada	direct
29 May - 04 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 $555

Return flights