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	EVA Air
29 Apr - 04 May	EVA Air
24 Apr - 26 Apr	Air China
22 Apr - 26 Apr	Air China
23 Apr - 26 Apr	Air China
22 Apr - 25 Apr	Air China
30 Apr - 05 May	Air China
30 Apr - 04 May	Air China
30 Apr - 06 May	Air China
28 Apr - 03 May	Air China
29 Apr - 03 May	Air China
30 Apr - 03 May	Air China
16 Apr - 16 Apr	Japan Airlines
30 Apr - 30 Apr	Japan Airlines

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 516€

Return flights