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

One-Way flights

18 Dec	VietJet Air	direct
17 Dec	VietJet Air	direct
15 Dec	VietJet Air	direct
08 Dec	VietJet Air	direct
05 Dec	HK Express
05 Dec	Jeju Air	direct
20 Dec	Jeju Air	direct
06 Dec	VietJet Air
26 Dec	Jeju Air	direct
25 Dec	Jeju Air	direct

Also check the deals for return 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 one-way flights from Hanoi to Seoul in December from 66€

One-Way flights