AirHint found the following cheapest return flights from Toronto (YTZ) to Bangkok (BKK) in September 2025 (see full year).

Return flights

17 Sep - 01 Oct	Air Canada
22 Sep - 29 Sep	Porter Airlines (Canada) Ltd
07 Sep - 14 Sep	Porter Airlines (Canada) Ltd
28 Sep - 12 Oct	Porter Airlines (Canada) Ltd
18 Sep - 28 Sep	Emirates
25 Sep - 12 Oct	Emirates
17 Sep - 02 Oct	Emirates
03 Sep - 29 Oct	Emirates
25 Sep - 02 Oct	Emirates
15 Sep - 22 Sep	Emirates
17 Sep - 24 Sep	Emirates
16 Sep - 30 Sep	Emirates
16 Sep - 21 Oct	Emirates
23 Sep - 07 Oct	Emirates
30 Sep - 14 Oct	Emirates
30 Sep - 21 Oct	Emirates
20 Sep - 27 Sep	Emirates

Also check the deals for one-way flights from Toronto to Bangkok 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 Bangkok in September from $1190

Return flights