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

One-Way flights

14 Oct	China Eastern
19 Oct	China Eastern
13 Oct	China Eastern
23 Oct	T'way Air
24 Oct	T'way Air	direct
25 Oct	Sichuan Airlines
20 Oct	Scoot
12 Oct	China Southern
26 Oct	China Southern
10 Oct	Malaysia Airlines

Also check the deals for return 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 one-way flights from Seoul to Barcelona in October from $266

One-Way flights