AirHint found the following cheapest return flights from Hanoi (HAN) to Seoul (ICN) in January 2026 (see full year).

Return flights

15 Jan - 20 Jan	VietJet Air
11 Jan - 18 Jan	VietJet Air
09 Jan - 13 Jan	VietJet Air
08 Jan - 13 Jan	VietJet Air
08 Jan - 11 Jan	VietJet Air
01 Jan - 06 Jan	VietJet Air
01 Jan - 30 Jan	VietJet Air
28 Jan - 01 Feb	VietJet Air
05 Jan - 09 Jan	Asiana Airlines	direct
01 Jan - 30 Jan	Asiana Airlines	direct
11 Jan - 18 Jan	Asiana Airlines	direct
28 Jan - 01 Feb	Asiana Airlines	direct
22 Jan - 09 Feb	AirAsia
29 Jan - 09 Feb	AirAsia
28 Jan - 09 Feb	AirAsia
24 Jan - 09 Feb	AirAsia
31 Jan - 09 Feb	AirAsia
20 Jan - 09 Feb	AirAsia
25 Jan - 09 Feb	AirAsia
22 Jan - 07 Feb	AirAsia

Also check the deals for one-way flights from Hanoi to Seoul in January.

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 January from $257

Return flights