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

Return flights

30 Aug - 14 Sep	Ryanair
22 Aug - 14 Sep	Vueling Airlines
24 Aug - 28 Aug	Air China
31 Aug - 14 Sep	easyJet
25 Aug - 10 Sep	Wizz Air Malta
26 Aug - 10 Sep	Air China
31 Aug - 07 Sep	Air China
29 Aug - 10 Sep	Air China
30 Aug - 09 Sep	Air China
30 Aug - 16 Sep	Ryanair
30 Aug - 10 Sep	Air China
21 Aug - 28 Aug	Air China
21 Aug - 31 Aug	Air China
18 Aug - 28 Aug	Air China
19 Aug - 31 Aug	Air China
15 Aug - 21 Aug	Shenzhen Airlines
11 Aug - 17 Aug	Iberia
18 Aug - 30 Aug	Iberia
06 Aug - 24 Aug	Shenzhen Airlines
11 Aug - 24 Aug	Shenzhen Airlines

Also check the deals for one-way flights from Barcelona 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 Barcelona to Seoul in August from 562€

Return flights