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

Return flights

03 Dec - 07 Dec	Scoot
04 Dec - 07 Dec	Scoot
04 Dec - 15 Dec	Scoot
03 Dec - 06 Dec	Scoot
08 Dec - 25 Dec	HK Express
11 Dec - 25 Dec	HK Express
04 Dec - 12 Dec	Scoot
05 Dec - 12 Dec	Scoot
10 Dec - 13 Dec	HK Express
12 Dec - 14 Dec	HK Express
13 Dec - 05 Jan	VietJet Air
13 Dec - 05 Jan	Asiana Airlines	direct
29 Dec - 02 Jan	VietJet Air
25 Dec - 02 Jan	VietJet Air
26 Dec - 02 Jan	VietJet Air
31 Dec - 02 Jan	VietJet Air
24 Dec - 02 Jan	VietJet Air
27 Dec - 02 Jan	VietJet Air
24 Dec - 03 Jan	VietJet Air
30 Dec - 03 Jan	VietJet Air

Also check the deals for one-way flights from Seoul to Hanoi 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 Seoul to Hanoi in December from 222€

Return flights