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

Return flights

21 Jan - 26 Jan	T'way Air
14 Jan - 19 Jan	T'way Air
15 Jan - 18 Jan	T'way Air
12 Jan - 26 Jan	T'way Air
13 Jan - 18 Jan	T'way Air
22 Jan - 26 Jan	T'way Air
12 Jan - 19 Jan	T'way Air
22 Jan - 27 Jan	T'way Air
13 Jan - 20 Jan	T'way Air
19 Jan - 22 Jan	T'way Air
30 Jan - 02 Feb	T'way Air
12 Jan - 01 Feb	T'way Air
29 Jan - 02 Feb	T'way Air
28 Jan - 04 Feb	T'way Air
26 Jan - 02 Feb	T'way Air
28 Jan - 01 Feb	T'way Air
27 Jan - 01 Feb	T'way Air
01 Jan - 13 Feb	Air China
16 Jan - 14 Feb	Jeju Air
03 Jan - 20 Feb	Jeju 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 340€

Return flights