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

Return flights

05 Dec - 11 Dec	Jetstar Japan
05 Dec - 10 Dec	Jetstar Japan
06 Dec - 13 Dec	Thai VietJet Air
01 Dec - 05 Dec	Thai VietJet Air
15 Dec - 22 Dec	Jetstar Japan
30 Dec - 02 Jan	Fuji Dream Airlines
25 Dec - 14 Jan	Thai VietJet Air
24 Dec - 12 Jan	Thai VietJet Air
25 Dec - 13 Jan	Thai VietJet Air
25 Dec - 12 Jan	China Airlines
25 Dec - 08 Jan	Thai VietJet Air
25 Dec - 09 Jan	Thai VietJet Air
26 Dec - 01 Jan	Thai VietJet Air
26 Dec - 09 Jan	Thai VietJet Air
27 Dec - 31 Jan	Jetstar Japan

Also check the deals for one-way flights from Sapporo 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 Sapporo to Hanoi in December from $365

Return flights