Cheapest return flights from Seoul to Singapore in September from $501

Best time to book flights for Seoul (GMP) to Singapore (SIN) flights at AirHint

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

Return flights

12 Sep - 16 Sep EVA Air
22 Sep - 25 Sep Japan Airlines
21 Sep - 25 Sep Japan Airlines
18 Sep - 24 Sep Japan Airlines
17 Sep - 24 Sep Japan Airlines
04 Sep - 08 Sep Japan Airlines
30 Sep - 07 Oct Japan Airlines
12 Sep - 14 Sep Japan Airlines
18 Sep - 22 Sep Japan Airlines
03 Sep - 06 Sep Japan Airlines
10 Sep - 12 Sep Japan Airlines
26 Sep - 03 Oct Japan Airlines
30 Sep - 11 Oct Japan Airlines

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

Skyscanner

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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