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

Return flights

22 Sep - 21 Oct	Cathay Pacific
23 Sep - 21 Oct	Cathay Pacific
21 Sep - 29 Sep	Cathay Pacific
15 Sep - 29 Sep	Cathay Pacific
23 Sep - 23 Oct	Cathay Pacific
18 Sep - 13 Oct	Cathay Pacific
15 Sep - 10 Oct	Cathay Pacific
03 Sep - 03 Oct	Cathay Pacific
22 Sep - 11 Oct	Cathay Pacific
10 Sep - 10 Oct	Cathay Pacific
19 Sep - 03 Oct	Cathay Pacific
18 Sep - 09 Oct	Cathay Pacific
19 Sep - 30 Sep	Cathay Pacific
18 Sep - 23 Sep	Cathay Pacific
05 Sep - 20 Sep	Cathay Pacific
12 Sep - 26 Sep	Cathay Pacific
06 Sep - 19 Sep	Cathay Pacific
06 Sep - 29 Sep	Cathay Pacific
05 Sep - 29 Sep	Cathay Pacific
03 Sep - 21 Sep	Cathay Pacific

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 $807

Return flights