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

Return flights

26 Jan - 03 Feb	VietJet Air
26 Jan - 06 Feb	VietJet Air
26 Jan - 11 Feb	VietJet Air
26 Jan - 04 Feb	VietJet Air
19 Jan - 06 Feb	VietJet Air
20 Jan - 06 Feb	VietJet Air
31 Jan - 06 Feb	VietJet Air
31 Jan - 11 Feb	VietJet Air
16 Jan - 23 Jan	Shandong Airlines
30 Jan - 01 Feb	Air China
27 Jan - 06 Feb	VietJet Air
18 Jan - 29 Jan	VietJet Air
18 Jan - 30 Jan	VietJet Air
23 Jan - 24 Jan	Air China
23 Jan - 26 Jan	Air China
29 Jan - 31 Jan	Air China
23 Jan - 30 Jan	Air China
16 Jan - 26 Jan	Air China
16 Jan - 31 Jan	Air China
23 Jan - 29 Jan	Air China

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

Return flights