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

Return flights

21 Oct - 06 Nov	Air China
28 Oct - 06 Nov	China Eastern
24 Oct - 31 Oct	Air China
29 Oct - 13 Nov	Air China
28 Oct - 18 Nov	Air China
30 Oct - 06 Nov	China Eastern
22 Oct - 05 Nov	Air China
27 Oct - 05 Nov	Air China
29 Oct - 12 Nov	Air China
23 Oct - 30 Oct	Air China
27 Oct - 11 Nov	Air China
27 Oct - 04 Nov	Air China
23 Oct - 28 Oct	Air China
22 Oct - 28 Oct	Air China
22 Oct - 29 Oct	Lufthansa
21 Oct - 29 Oct	Lufthansa
15 Oct - 22 Oct	T'way Air	direct
20 Oct - 22 Oct	T'way Air	direct
25 Oct - 29 Oct	SWISS
21 Oct - 26 Oct	Lufthansa

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 396€

Return flights