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

Return flights

03 Sep - 24 Sep	Emirates
02 Sep - 16 Sep	Cathay Pacific
17 Sep - 01 Oct	Cathay Pacific
01 Sep - 22 Sep	Cathay Pacific
11 Sep - 24 Sep	Cathay Pacific
01 Sep - 01 Oct	Cathay Pacific
07 Sep - 28 Sep	Cathay Pacific
03 Sep - 19 Sep	Cathay Pacific
15 Sep - 10 Oct	Cathay Pacific
11 Sep - 01 Oct	Emirates
16 Sep - 15 Oct	Cathay Pacific
24 Sep - 28 Oct	Qatar Airways
25 Sep - 22 Oct	Qatar Airways
30 Sep - 22 Oct	Qatar Airways
14 Sep - 29 Oct	Air India
14 Sep - 30 Oct	Air India
01 Sep - 09 Sep	Emirates
07 Sep - 16 Sep	Cathay Pacific

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 1096€

Return flights