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

Return flights

19 Aug - 26 Aug	T'way Air
28 Aug - 04 Sep	Jin Air
18 Aug - 22 Aug	Eastar Jet
29 Aug - 02 Sep	Jeju Air
28 Aug - 01 Sep	Jeju Air
22 Aug - 01 Sep	Jeju Air
27 Aug - 01 Sep	Jeju Air
30 Aug - 01 Sep	Jeju Air
27 Aug - 31 Aug	Jeju Air
28 Aug - 31 Aug	Jeju Air
29 Aug - 01 Sep	Jeju Air
30 Aug - 02 Sep	Jeju Air
22 Aug - 25 Aug	Jin Air
26 Aug - 01 Sep	Jeju Air
27 Aug - 03 Sep	Jeju Air
17 Aug - 19 Aug	T'way Air
20 Aug - 26 Aug	T'way Air
18 Aug - 20 Aug	T'way Air
20 Aug - 25 Aug	T'way Air
21 Aug - 26 Aug	T'way Air

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

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 August from 245€

Return flights