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

Return flights

08 Jan - 21 Jan	T'way Air
13 Jan - 18 Jan	T'way Air
08 Jan - 25 Jan	T'way Air
08 Jan - 13 Jan	T'way Air
26 Jan - 28 Jan	Shandong Airlines
09 Jan - 21 Jan	VietJet Air
05 Jan - 10 Jan	VietJet Air
11 Jan - 24 Jan	VietJet Air
11 Jan - 18 Jan	VietJet Air
07 Jan - 18 Jan	VietJet Air
26 Jan - 03 Feb	VietJet Air
10 Jan - 10 Feb	VietJet Air
31 Jan - 08 Feb	VietJet Air
27 Jan - 08 Feb	VietJet Air
30 Jan - 08 Feb	VietJet Air
30 Jan - 03 Feb	VietJet Air
27 Jan - 01 Feb	VietJet Air
28 Jan - 01 Feb	VietJet Air
30 Jan - 04 Feb	VietJet Air
30 Jan - 01 Feb	VietJet Air

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 $195

Return flights