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

Return flights

21 Apr - 28 Apr	AirAsia X
08 Apr - 11 Apr	Vietnam Airlines
01 Apr - 06 Apr	Scoot	direct
01 Apr - 05 Apr	Scoot	direct
15 Apr - 27 Apr	Scoot	direct
15 Apr - 20 Apr	Scoot	direct
21 Apr - 13 May	AirAsia X
28 Apr - 22 May	Royal Brunei
28 Apr - 21 May	AirAsia X
20 Apr - 26 Apr	Scoot	direct
22 Apr - 26 Apr	Scoot	direct
15 Apr - 19 Apr	Scoot	direct
25 Apr - 27 Apr	Scoot
28 Apr - 02 May	AirAsia X
30 Apr - 10 May	AirAsia X
21 Apr - 13 May	Jeju Air	direct
25 Apr - 03 May	Scoot
26 Apr - 22 May	VietJet Air
28 Apr - 21 May	Jeju Air	direct
28 Apr - 23 May	VietJet 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 190€

Return flights