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

Return flights

03 Dec - 12 Dec	Cathay Pacific
04 Dec - 12 Dec	Cathay Pacific
05 Dec - 14 Dec	Cathay Pacific
08 Dec - 17 Dec	Cathay Pacific
03 Dec - 11 Dec	Cathay Pacific
02 Dec - 11 Dec	Cathay Pacific
02 Dec - 08 Dec	Cathay Pacific
07 Dec - 14 Dec	Cathay Pacific
03 Dec - 15 Dec	Cathay Pacific
05 Dec - 17 Dec	Cathay Pacific
11 Dec - 06 Jan	Cathay Pacific
28 Dec - 04 Jan	Scoot
20 Dec - 09 Jan	Air China
24 Dec - 01 Jan	VietJet Air
23 Dec - 01 Jan	VietJet Air
30 Dec - 03 Jan	Scoot
25 Dec - 01 Jan	VietJet Air
28 Dec - 04 Jan	Asiana Airlines	direct
04 Dec - 02 Jan	VietJet Air
24 Dec - 02 Jan	VietJet Air

Also check the deals for one-way flights from Singapore 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 return flights from Singapore to Seoul in December from $383

Return flights