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

Return flights

12 Oct - 19 Oct	British Airways
13 Oct - 20 Oct	Qatar Airways
15 Oct - 22 Oct	Qatar Airways
21 Oct - 28 Oct	Qatar Airways
06 Oct - 13 Oct	Qatar Airways
20 Oct - 27 Oct	Qatar Airways
27 Oct - 03 Nov	Qatar Airways
28 Oct - 04 Nov	Qatar Airways
05 Oct - 12 Oct	British Airways
03 Oct - 10 Oct	Qatar Airways
19 Oct - 26 Oct	Qatar Airways
24 Oct - 31 Oct	Qatar Airways
26 Oct - 02 Nov	Qatar Airways
31 Oct - 07 Nov	Qatar Airways
30 Oct - 06 Nov	Air Canada
25 Oct - 01 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 1028€

Return flights