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

Return flights

01 Dec - 13 Dec	WestJet
04 Dec - 11 Dec	Flair Airlines
01 Dec - 08 Dec	Porter Airlines (Canada) Ltd
05 Dec - 11 Dec	Flair Airlines
03 Dec - 10 Dec	WestJet
05 Dec - 22 Dec	WestJet
09 Dec - 17 Dec	Cathay Pacific
09 Dec - 16 Dec	Cathay Pacific
09 Dec - 11 Dec	WestJet
10 Dec - 17 Dec	Cathay Pacific
26 Dec - 31 Jan	WestJet
15 Dec - 15 Jan	Flair Airlines
21 Dec - 19 Jan	WestJet
01 Dec - 07 Jan	WestJet
20 Dec - 19 Jan	WestJet
21 Dec - 18 Jan	WestJet
20 Dec - 20 Jan	WestJet
20 Dec - 16 Jan	WestJet
26 Dec - 08 Jan	WestJet
20 Dec - 18 Jan	Flair Airlines

Also check the deals for one-way flights from Toronto to Hanoi 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 Hanoi in December from 873€

Return flights