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

Return flights

09 Dec - 14 Dec	VietJet Air
10 Dec - 14 Dec	VietJet Air
10 Dec - 16 Dec	VietJet Air
09 Dec - 12 Dec	VietJet Air
09 Dec - 13 Dec	VietJet Air
08 Dec - 22 Dec	VietJet Air
02 Dec - 10 Dec	VietJet Air
08 Dec - 11 Dec	VietJet Air
03 Dec - 14 Dec	VietJet Air
03 Dec - 10 Dec	VietJet Air
26 Dec - 03 Jan	VietJet Air
26 Dec - 02 Jan	VietJet Air
26 Dec - 02 Jan	VietJet Air	direct
25 Dec - 29 Jan	VietJet Air
20 Dec - 02 Jan	VietJet Air
17 Dec - 02 Jan	VietJet Air
13 Dec - 03 Jan	VietJet Air
25 Dec - 03 Jan	VietJet Air
30 Dec - 04 Jan	T'way Air	direct
12 Dec - 02 Jan	VietJet Air

Also check the deals for one-way flights from Hanoi to Seoul 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 Hanoi to Seoul in December from 177€

Return flights