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

Return flights

15 Jan - 28 Jan	Air China
14 Jan - 17 Jan	Air China
20 Jan - 24 Jan	Air China
08 Jan - 13 Jan	Air China
06 Jan - 13 Jan	Air China
22 Jan - 27 Jan	Air China
20 Jan - 26 Jan	Air China
20 Jan - 25 Jan	Air China
16 Jan - 18 Jan	Air China
23 Jan - 30 Jan	Air China
27 Jan - 07 Feb	Air China
26 Jan - 07 Feb	Air China
22 Jan - 07 Feb	Air China
15 Jan - 01 Feb	Air China
22 Jan - 01 Feb	Air China
14 Jan - 07 Feb	Air China
31 Jan - 09 Feb	Scoot	direct
27 Jan - 01 Feb	Air China
20 Jan - 03 Feb	Air China
30 Jan - 15 Feb	Air China

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 $239

Return flights