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

Return flights

10 Sep - 10 Oct	Lufthansa
03 Sep - 14 Sep	KLM
03 Sep - 10 Sep	KLM
02 Sep - 14 Sep	Air France
01 Sep - 07 Sep	Air France
01 Sep - 17 Sep	Etihad Airways
22 Sep - 29 Sep	Finnair
21 Sep - 06 Oct	Vueling Airlines
04 Sep - 15 Sep	Air France
04 Sep - 14 Sep	Air France
01 Sep - 13 Sep	Air France
01 Sep - 30 Sep	Finnair
16 Sep - 04 Oct	Etihad Airways
26 Sep - 08 Oct	Vueling Airlines
26 Sep - 09 Oct	Vueling Airlines
28 Sep - 11 Oct	Vueling Airlines
21 Sep - 06 Oct	Asiana Airlines	direct
16 Sep - 04 Oct	Asiana Airlines	direct
28 Sep - 11 Oct	Asiana Airlines	direct
10 Sep - 10 Oct	Asiana Airlines	direct

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 $740

Return flights