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

Return flights

24 Sep - 10 Oct	easyJet
15 Sep - 21 Sep	Wizz Air Malta
24 Sep - 12 Oct	Shenzhen Airlines
14 Sep - 21 Sep	Ryanair
03 Sep - 10 Sep	Vueling Airlines
10 Sep - 24 Sep	Vueling Airlines
08 Sep - 22 Sep	Wizz Air Malta
02 Sep - 17 Sep	Air China
24 Sep - 14 Oct	Air China
06 Sep - 24 Sep	Vueling Airlines
03 Sep - 18 Sep	Air China
03 Sep - 17 Sep	Air China
01 Sep - 21 Sep	Vueling Airlines
20 Sep - 11 Oct	Ryanair
23 Sep - 11 Oct	Ryanair
24 Sep - 09 Oct	easyJet
21 Sep - 11 Oct	Vueling Airlines
25 Sep - 13 Oct	Wizz Air Malta
21 Sep - 08 Oct	Vueling Airlines
22 Sep - 07 Oct	easyJet

Also check the deals for one-way flights from Barcelona to Seoul in September.

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 September from $578

Return flights