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

Return flights

26 Jan - 28 Jan	Jeju Air
26 Jan - 29 Jan	Jeju Air
12 Jan - 15 Jan	Air China
15 Jan - 20 Jan	Air China
14 Jan - 21 Jan	Air China
16 Jan - 28 Jan	Air China
15 Jan - 19 Jan	Air China
19 Jan - 22 Jan	Air China
22 Jan - 27 Jan	Air China
28 Jan - 02 Feb	Jeju Air
28 Jan - 31 Jan	Jeju Air
28 Jan - 07 Feb	Jeju Air
21 Jan - 09 Feb	Jeju Air
26 Jan - 01 Feb	Jeju Air
31 Jan - 03 Feb	Jeju Air
31 Jan - 02 Feb	Jeju Air
31 Jan - 07 Feb	Jeju Air
30 Jan - 03 Feb	Jeju Air
29 Jan - 08 Feb	Jeju Air
23 Jan - 20 Feb	T'way Air

Also check the deals for one-way flights from Seoul to Singapore 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 Singapore in January from 252€

Return flights