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

Return flights

10 Sep - 21 Sep	easyJet
15 Sep - 23 Sep	Shenzhen Airlines
08 Sep - 22 Sep	Vueling Airlines
04 Sep - 10 Sep	Vueling Airlines
08 Sep - 23 Sep	Shenzhen Airlines
08 Sep - 18 Sep	Shenzhen Airlines
03 Sep - 16 Sep	Vueling Airlines
09 Sep - 21 Sep	Vueling Airlines
09 Sep - 23 Sep	Vueling Airlines
09 Sep - 16 Sep	Vueling Airlines
23 Sep - 11 Oct	Ryanair
20 Sep - 11 Oct	Ryanair
01 Sep - 31 Oct	T'way Air
21 Sep - 11 Oct	Vueling Airlines
19 Sep - 11 Oct	Wizz Air Malta
27 Sep - 14 Oct	LOT
27 Sep - 09 Oct	Ryanair
18 Sep - 06 Oct	Ryanair
14 Sep - 25 Oct	Air China
05 Sep - 07 Oct	T'way Air

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 538€

Return flights