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

Return flights

26 Jan - 29 Jan	Jeju Air
19 Jan - 22 Jan	Jeju Air
19 Jan - 27 Jan	Jeju Air
26 Jan - 30 Jan	Jeju Air
26 Jan - 02 Feb	Jeju Air
27 Jan - 03 Feb	Jeju Air
12 Jan - 15 Jan	Jeju Air
21 Jan - 28 Jan	Jeju Air
19 Jan - 26 Jan	Jeju Air
28 Jan - 03 Feb	Jeju Air
26 Jan - 31 Jan	Jeju Air
22 Jan - 29 Jan	Jeju Air
22 Jan - 27 Jan	Jeju Air
28 Jan - 02 Feb	Jeju Air
31 Jan - 10 Feb	Jeju Air
31 Jan - 05 Feb	Jeju Air
31 Jan - 02 Feb	Jeju Air
28 Jan - 01 Feb	Jeju Air
10 Jan - 04 Feb	Jeju Air
12 Jan - 12 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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Cheapest return flights from Seoul to Singapore in January from $331

Return flights