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

Return flights

21 Oct - 29 Oct	Air China
15 Oct - 24 Oct	Air China
14 Oct - 23 Oct	Air China
29 Oct - 05 Nov	Air China
15 Oct - 22 Oct	Air China
14 Oct - 22 Oct	Air China
22 Oct - 28 Oct	Air China
24 Oct - 31 Oct	Air China
18 Oct - 25 Oct	Air China
09 Oct - 16 Oct	Air China
30 Oct - 05 Nov	Singapore Airlines
11 Oct - 18 Oct	Air China
25 Oct - 01 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 533€

Return flights