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

Return flights

16 Oct - 20 Oct	Jeju Air
10 Oct - 15 Oct	Jeju Air
11 Oct - 17 Oct	Jeju Air
12 Oct - 19 Oct	Jeju Air
15 Oct - 19 Oct	Jeju Air
16 Oct - 19 Oct	Jeju Air
16 Oct - 18 Oct	Jeju Air
10 Oct - 13 Oct	Jeju Air
09 Oct - 13 Oct	Jeju Air
22 Oct - 31 Oct	Air China
31 Oct - 07 Nov	Air China

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

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Cheapest return flights from Seoul to Singapore in October from $415

Return flights