AirHint found the following cheapest return flights from Singapore (SIN) to Seoul (ICN) in October 2025 (see full year).

Return flights

01 Oct - 13 Oct	AirAsia
06 Oct - 10 Oct	AirAsia
01 Oct - 15 Oct	Scoot
02 Oct - 12 Oct	Jeju Air
01 Oct - 15 Oct	Scoot	direct
02 Oct - 11 Oct	Scoot	direct
01 Oct - 12 Oct	Scoot
01 Oct - 09 Oct	Scoot
03 Oct - 08 Oct	Jeju Air
06 Oct - 12 Oct	AirAsia
25 Oct - 01 Nov	VietJet Air
31 Oct - 07 Nov	Jeju Air
27 Oct - 12 Nov	AirAsia
31 Oct - 03 Nov	Jeju Air
29 Oct - 03 Nov	AirAsia
29 Oct - 12 Nov	AirAsia
22 Oct - 05 Nov	Scoot
27 Oct - 08 Nov	AirAsia
29 Oct - 08 Nov	AirAsia
28 Oct - 24 Nov	Scoot

Also check the deals for one-way flights from Singapore to Seoul in October.

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 Singapore to Seoul in October from $210

Return flights