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

Return flights

31 Aug - 07 Sep	Porter Airlines (Canada) Ltd
27 Aug - 17 Sep	Qatar Airways
26 Aug - 02 Sep	Porter Airlines (Canada) Ltd
27 Aug - 03 Sep	WestJet
29 Aug - 05 Sep	Porter Airlines (Canada) Ltd
30 Aug - 06 Sep	Porter Airlines (Canada) Ltd
28 Aug - 04 Sep	Porter Airlines (Canada) Ltd
07 Aug - 14 Aug	Air Canada
06 Aug - 13 Aug	Porter Airlines (Canada) Ltd
20 Aug - 27 Aug	Air Canada
18 Aug - 22 Aug	Air Canada
05 Aug - 12 Aug	Etihad Airways
13 Aug - 20 Aug	Etihad Airways
15 Aug - 22 Aug	Etihad Airways
17 Aug - 24 Aug	Etihad Airways
19 Aug - 26 Aug	Etihad Airways
21 Aug - 28 Aug	Etihad Airways
03 Aug - 06 Sep	Emirates

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

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 August from 1128€

Return flights