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

Return flights

12 May - 19 May	AirAsia
12 May - 20 May	AirAsia
21 May - 27 May	AirAsia
07 May - 11 May	AirAsia
11 May - 16 May	AirAsia
11 May - 11 May	AirAsia
12 May - 22 May	AirAsia
10 May - 19 May	AirAsia
14 May - 19 May	AirAsia
10 May - 21 May	AirAsia
21 May - 02 Jun	AirAsia
16 May - 01 Jun	Scoot
28 May - 02 Jun	Cebu Pacific
29 May - 08 Jun	Cebu Pacific
29 May - 02 Jun	Cebu Pacific
27 May - 02 Jun	Cebu Pacific
27 May - 01 Jun	Cebu Pacific
29 May - 06 Jun	Cebu Pacific
29 May - 05 Jun	Cebu Pacific
27 May - 03 Jun	Cebu Pacific

Also check the deals for one-way flights from Singapore to Seoul 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 Singapore to Seoul in May from 163€

Return flights