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

Return flights

10 Dec - 17 Dec	Air China
25 Dec - 28 Dec	Air China
01 Dec - 03 Dec	Air China
29 Dec - 01 Jan	Air China
29 Dec - 02 Jan	Air China
28 Dec - 01 Jan	Air China
28 Dec - 31 Dec	Air China
20 Dec - 23 Dec	Air China
04 Dec - 06 Dec	Air China
18 Dec - 26 Dec	Air China
25 Dec - 03 Jan	Air China
25 Dec - 02 Jan	Air China
25 Dec - 01 Jan	Air China
27 Dec - 01 Jan	Air China
26 Dec - 31 Dec	Air China
17 Dec - 24 Dec	Air China
19 Dec - 21 Dec	Air China
28 Dec - 02 Jan	Air China
07 Dec - 21 Jan	Air China

Also check the deals for one-way flights from Seoul to Singapore 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 Singapore in December from 454€

Return flights