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

Return flights

22 Oct - 30 Oct	Air China
21 Oct - 30 Oct	Air China
15 Oct - 28 Oct	Air China
19 Oct - 28 Oct	Air China
19 Oct - 26 Oct	Air China
17 Oct - 24 Oct	Air China
17 Oct - 31 Oct	Air China
28 Oct - 01 Nov	Air China
28 Oct - 09 Nov	Air China
25 Oct - 26 Oct	Air China
25 Oct - 01 Nov	Air China
13 Oct - 28 Oct	Korean Air
29 Oct - 26 Nov	Korean Air
02 Oct - 11 Oct	Jeju Air
09 Oct - 02 Nov	Air China

Also check the deals for one-way flights from Busan 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 Busan to Barcelona in October from $628

Return flights