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

Return flights

17 Sep - 26 Sep	Air China
17 Sep - 24 Sep	Air China
20 Sep - 26 Sep	Air China
16 Sep - 23 Sep	Air China
23 Sep - 02 Oct	Air China
20 Sep - 27 Sep	Air China
08 Sep - 12 Sep	Air China
05 Sep - 13 Sep	Air China
01 Sep - 12 Sep	Air China
01 Sep - 10 Sep	Air China
05 Sep - 10 Sep	Air China
25 Sep - 14 Oct	Air China
27 Sep - 12 Oct	Singapore Airlines
28 Sep - 15 Oct	Korean Air
27 Sep - 14 Oct	Asiana Airlines
27 Sep - 08 Oct	Korean Air
27 Sep - 05 Oct	Air China
30 Sep - 13 Oct	Korean Air
27 Sep - 11 Oct	Japan Airlines
30 Sep - 07 Oct	Korean Air

Also check the deals for one-way flights from Busan to Barcelona in September.

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Cheapest return flights from Busan to Barcelona in September from 467€

Return flights