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

Return flights

20 Apr - 21 Apr	Air China
20 Apr - 27 Apr	Air China
07 Apr - 18 Apr	Air China
07 Apr - 12 Apr	Air China
15 Apr - 18 Apr	Air China
13 Apr - 16 Apr	Air China
14 Apr - 21 Apr	Air China
22 Apr - 25 Apr	Air China
16 Apr - 20 Apr	Air China
12 Apr - 19 Apr	Air China
29 Apr - 04 May	EVA Air

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

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 April from 460€

Return flights