AirHint found the following cheapest return flights from Sofia (SOF) to Seoul (ICN) in August 2025 (see full year).

Return flights

30 Aug - 14 Sep	Ryanair
19 Aug - 26 Aug	Wizz Air
24 Aug - 06 Sep	SKY express
21 Aug - 28 Aug	Qatar Airways
25 Aug - 04 Sep	Emirates
20 Aug - 30 Aug	ITA Airways
22 Aug - 30 Aug	Air Serbia
17 Aug - 19 Aug	Wizz Air
26 Aug - 11 Sep	Air France

Also check the deals for one-way flights from Sofia 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 Sofia to Seoul in August from 701€

Return flights