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

Return flights

01 Jul - 08 Jul	Jeju Air
06 Jul - 10 Jul	Jeju Air
01 Jul - 07 Jul	Jeju Air
15 Jul - 21 Jul	Jeju Air
14 Jul - 21 Jul	Jeju Air
07 Jul - 10 Jul	Jeju Air
01 Jul - 06 Jul	Jeju Air
08 Jul - 13 Jul	Jeju Air
15 Jul - 20 Jul	Jeju Air
03 Jul - 07 Jul	Jeju Air
29 Jul - 10 Aug	T'way Air
29 Jul - 03 Aug	T'way Air
31 Jul - 05 Aug	T'way Air
26 Jul - 05 Aug	T'way Air
28 Jul - 01 Aug	T'way Air
31 Jul - 08 Aug	T'way Air
26 Jul - 02 Aug	Jeju Air
30 Jul - 02 Aug	Jeju Air
29 Jul - 02 Aug	Jeju Air
25 Jul - 01 Aug	Jeju Air

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

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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Cheapest return flights from Seoul to Singapore in July from $297

Return flights