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

Return flights

02 Sep - 09 Sep	Porter Airlines (Canada) Ltd
09 Sep - 07 Oct	Emirates
10 Sep - 01 Oct	Emirates
08 Sep - 06 Oct	Emirates
10 Sep - 08 Oct	Emirates
02 Sep - 18 Sep	Emirates
01 Sep - 18 Sep	Emirates
03 Sep - 18 Sep	Emirates
02 Sep - 16 Sep	Emirates
02 Sep - 02 Oct	Emirates
02 Sep - 09 Oct	Emirates
05 Sep - 16 Sep	Emirates
06 Sep - 07 Oct	Emirates
02 Sep - 19 Sep	Emirates
03 Sep - 19 Sep	Emirates
01 Sep - 04 Oct	Emirates
11 Sep - 30 Sep	Emirates
11 Sep - 05 Oct	Emirates
11 Sep - 06 Oct	Emirates
02 Sep - 17 Sep	Emirates

Also check the deals for one-way flights from Toronto to Kathmandu 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 Kathmandu in September from $1211

Return flights