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

Return flights

23 Oct - 28 Nov	China Eastern
30 Oct - 06 Nov	China Eastern
28 Oct - 13 Nov	Air China
27 Oct - 03 Nov	Air China
29 Oct - 05 Nov	Air China
22 Oct - 29 Oct	China Eastern
24 Oct - 31 Oct	Air China
28 Oct - 12 Nov	Air China
30 Oct - 18 Nov	Air China
28 Oct - 04 Nov	China Eastern
28 Oct - 09 Nov	Air China
29 Oct - 09 Nov	Air China
23 Oct - 30 Oct	Air China
20 Oct - 27 Oct	China Eastern
24 Oct - 30 Oct	Air France
21 Oct - 30 Oct	Air France
20 Oct - 30 Oct	KLM
22 Oct - 28 Oct	Etihad Airways
21 Oct - 28 Oct	Etihad Airways
23 Oct - 29 Oct	Air France

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

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 October from $424

Return flights