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

Return flights

19 Jan - 27 Jan	AirAsia X
19 Jan - 21 Jan	AirAsia X
22 Jan - 25 Jan	AirAsia X
15 Jan - 22 Jan	AirAsia X
22 Jan - 26 Jan	AirAsia X
19 Jan - 25 Jan	AirAsia X
15 Jan - 20 Jan	AirAsia X
15 Jan - 27 Jan	AirAsia X
15 Jan - 18 Jan	AirAsia X
19 Jan - 22 Jan	AirAsia X
22 Jan - 05 Feb	AirAsia X
29 Jan - 09 Feb	AirAsia X
23 Jan - 01 Feb	AirAsia X
28 Jan - 02 Feb	Scoot	direct
31 Jan - 02 Feb	Scoot	direct
31 Jan - 09 Feb	Scoot	direct
28 Jan - 04 Feb	Scoot	direct
31 Jan - 07 Feb	Scoot	direct
20 Jan - 10 Feb	AirAsia X
22 Jan - 01 Feb	AirAsia X

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 149€

Return flights