AirHint found the following cheapest return flights from Toronto (YYZ) to Colombo (CMB) in September 2025 (see full year).

Return flights

18 Sep - 25 Sep	Cathay Pacific
22 Sep - 29 Sep	Cathay Pacific
18 Sep - 24 Sep	Cathay Pacific
22 Sep - 28 Oct	Cathay Pacific
18 Sep - 18 Oct	Cathay Pacific
21 Sep - 21 Oct	Cathay Pacific
20 Sep - 21 Oct	Cathay Pacific
18 Sep - 01 Oct	Cathay Pacific
23 Sep - 21 Oct	Cathay Pacific
19 Sep - 26 Sep	Cathay Pacific
22 Sep - 31 Oct	Cathay Pacific
21 Sep - 28 Sep	Cathay Pacific
20 Sep - 28 Sep	Cathay Pacific
24 Sep - 31 Oct	Cathay Pacific
20 Sep - 20 Oct	Cathay Pacific
18 Sep - 16 Oct	Cathay Pacific
22 Sep - 30 Sep	Cathay Pacific
23 Sep - 30 Sep	Air Transat
18 Sep - 30 Sep	Cathay Pacific
21 Sep - 29 Sep	Emirates

Also check the deals for one-way flights from Toronto to Colombo in September.

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 Toronto to Colombo in September from $812

Return flights