AirHint found the following cheapest return flights from Montreal (YUL) to Colombo (CMB) in October 2025 (see full year).

Return flights

27 Oct - 03 Nov	Qatar Airways
08 Oct - 15 Oct	Qatar Airways
20 Oct - 27 Oct	Qatar Airways
01 Oct - 08 Oct	Qatar Airways
07 Oct - 14 Oct	Qatar Airways
13 Oct - 20 Oct	Qatar Airways
21 Oct - 28 Oct	Qatar Airways
29 Oct - 05 Nov	Qatar Airways
22 Oct - 29 Oct	Qatar Airways
05 Oct - 12 Oct	Qatar Airways
19 Oct - 26 Oct	Qatar Airways
26 Oct - 02 Nov	Qatar Airways
06 Oct - 22 Oct	Qatar Airways
25 Oct - 01 Nov	Etihad Airways
31 Oct - 07 Nov	Etihad Airways
30 Oct - 06 Nov	Air Canada

Also check the deals for one-way flights from Montreal to Colombo in October.

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 Colombo in October from 961€

Return flights