Cheapest return GMP–SIN flights, September

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

Return flights

01 Sep - 09 Sep Jeju Air
12 Sep - 16 Sep Jeju Air
01 Sep - 07 Sep T'way Air
07 Sep - 11 Sep Jeju Air
14 Sep - 18 Sep Jeju Air
14 Sep - 19 Sep Jeju Air
07 Sep - 12 Sep Jeju Air
06 Sep - 14 Sep T'way Air
06 Sep - 11 Sep Jeju Air
08 Sep - 13 Sep Jeju Air
30 Sep - 05 Oct T'way Air
30 Sep - 06 Oct T'way Air
30 Sep - 02 Oct T'way Air
28 Sep - 03 Oct Air China
30 Sep - 04 Oct Air China
29 Sep - 01 Oct Jeju Air
28 Sep - 02 Oct Jeju Air
25 Sep - 02 Oct Jeju Air
24 Sep - 04 Oct Jeju Air

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

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