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

Return flights

29 Aug - 31 Aug	Scoot	direct
07 Aug - 10 Aug	Cebu Pacific
01 Aug - 06 Aug	Cebu Pacific
25 Aug - 12 Sep	Scoot
16 Aug - 22 Aug	Vietnam Airlines
07 Aug - 15 Aug	Vietnam Airlines
28 Aug - 04 Sep	Scoot
01 Aug - 06 Aug	Asiana Airlines	direct
28 Aug - 04 Sep	Asiana Airlines	direct
25 Aug - 12 Sep	Korean Air	direct
16 Aug - 22 Aug	Singapore Airlines	direct
07 Aug - 15 Aug	Korean Air	direct
07 Aug - 10 Aug	Korean Air	direct

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

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 August from 201€

Return flights