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

Return flights

22 Apr - 27 Apr	Air China
10 Apr - 17 Apr	Air China
25 Apr - 02 May	Air China
08 Apr - 12 Apr	Air China
09 Apr - 12 Apr	Air China
08 Apr - 11 Apr	Air China
30 Apr - 05 May	Air China
24 Apr - 26 Apr	Air China
26 Apr - 01 May	Air China
29 Apr - 04 May	Air China
25 Apr - 01 May	Air China
05 Apr - 16 Apr	Air China
07 Apr - 14 Apr	Air China

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 $533

Return flights