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

Return flights

31 Aug - 21 Sep	Air India
26 Aug - 21 Sep	Air India
20 Aug - 18 Sep	Air India
19 Aug - 19 Sep	Air India
27 Aug - 09 Sep	KLM
26 Aug - 14 Sep	Finnair
27 Aug - 10 Sep	Finnair
20 Aug - 03 Sep	Finnair
29 Aug - 11 Sep	Finnair
31 Aug - 07 Sep	Air China
18 Aug - 26 Aug	Finnair
20 Aug - 31 Aug	Finnair
21 Aug - 31 Aug	Finnair
23 Aug - 31 Aug	Finnair
20 Aug - 30 Aug	Finnair
18 Aug - 28 Aug	Finnair
20 Aug - 28 Aug	Finnair
24 Aug - 30 Aug	LOT
23 Aug - 28 Aug	LOT
21 Aug - 30 Aug	LOT

Also check the deals for one-way flights from Paris 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 Paris to Seoul in August from $679

Return flights