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

Return flights

29 May - 01 Jun	EVA Air
29 May - 02 Jun	EVA Air
22 May - 25 May	EVA Air
01 May - 05 May	EVA Air
13 May - 22 May	Air China
02 May - 05 May	EVA Air
28 May - 01 Jun	Air China
20 May - 23 May	Air China
11 May - 16 May	Air China
27 May - 30 May	Air China
30 May - 03 Jun	Air China
01 May - 06 May	Air China
21 May - 24 May	Air China
30 May - 30 May	Japan Airlines

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

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 May from 439€

Return flights