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

Return flights

31 Dec - 31 Jan	WestJet
07 Dec - 20 Jan	Cathay Pacific
04 Dec - 11 Dec	Cathay Pacific
01 Dec - 13 Dec	Air Transat
05 Dec - 23 Dec	Cathay Pacific
11 Dec - 19 Jan	Air Transat
03 Dec - 22 Jan	Porter Airlines (Canada) Ltd
30 Dec - 31 Jan	WestJet
28 Dec - 27 Jan	WestJet
30 Dec - 30 Jan	WestJet
11 Dec - 20 Jan	Air Transat
05 Dec - 15 Jan	Porter Airlines (Canada) Ltd
29 Dec - 30 Jan	Porter Airlines (Canada) Ltd
03 Dec - 10 Dec	WestJet
05 Dec - 21 Dec	WestJet
05 Dec - 20 Dec	WestJet
03 Dec - 29 Dec	Porter Airlines (Canada) Ltd
07 Dec - 31 Dec	Air Transat
08 Dec - 31 Dec	Air Transat
06 Dec - 31 Dec	Qatar Airways

Also check the deals for one-way flights from Toronto to Kathmandu in December.

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 December from 1048€

Return flights