AirHint found the following cheapest return flights from Seoul (GMP) to Barcelona (BCN) in August 2026 (see full year).

Return flights

31 Aug - 15 Sep	Air China
29 Aug - 13 Sep	Air China
29 Aug - 04 Sep	Air China
28 Aug - 05 Sep	Air China
23 Aug - 01 Sep	Air China
23 Aug - 04 Sep	Air China
21 Aug - 28 Aug	Air China
30 Aug - 10 Sep	Air China
23 Aug - 30 Aug	Air China
20 Aug - 22 Aug	Air China
10 Aug - 21 Aug	Air China
01 Aug - 11 Aug	Air China
08 Aug - 23 Aug	Air China
12 Aug - 16 Aug	Air China
10 Aug - 24 Aug	Air China
15 Aug - 22 Aug	Air China
11 Aug - 25 Aug	Air China
11 Aug - 11 Sep	Air China
30 Aug - 12 Sep	Air China

Also check the deals for one-way flights from Seoul to Barcelona 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 Seoul to Barcelona in August from 489€

Return flights