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

Return flights

16 Oct - 22 Oct	Jeju Air
15 Oct - 22 Oct	Jeju Air
17 Oct - 22 Oct	Jeju Air
23 Oct - 26 Oct	Air China
22 Oct - 24 Oct	Jeju Air
24 Oct - 26 Oct	China Eastern
23 Oct - 27 Oct	Air China
31 Oct - 03 Nov	China Eastern
24 Oct - 27 Oct	Air China
13 Oct - 23 Oct	Jeju Air
15 Oct - 30 Oct	Jeju Air
28 Oct - 02 Nov	Air China
29 Oct - 05 Nov	Air China
29 Oct - 03 Nov	Air China
30 Oct - 04 Nov	Jeju Air
29 Oct - 01 Nov	Air China
31 Oct - 05 Nov	Jeju Air
31 Oct - 04 Nov	Air Busan
30 Oct - 02 Nov	Jeju Air
28 Oct - 04 Nov	Jeju Air

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 229€

Return flights