AirHint found the following cheapest return flights from Seoul (ICN) to Barcelona (BCN) in September 2026 (see full year).

Return flights

05 Sep - 22 Sep	Air China
16 Sep - 22 Sep	Air China
12 Sep - 20 Sep	Air China
14 Sep - 20 Sep	Air China
14 Sep - 22 Sep	Air China
16 Sep - 27 Sep	Air China
07 Sep - 16 Sep	Air China
05 Sep - 12 Sep	Air China
05 Sep - 11 Sep	Air China
09 Sep - 16 Sep	Air China
19 Sep - 04 Oct	Air China
21 Sep - 04 Oct	Air China
23 Sep - 04 Oct	Air China
16 Sep - 02 Oct	Air China
17 Sep - 04 Oct	Air China
23 Sep - 09 Oct	Scandinavian Airlines
01 Sep - 01 Oct	Scandinavian Airlines
24 Sep - 05 Oct	Scandinavian Airlines
24 Sep - 04 Oct	Scandinavian Airlines
17 Sep - 09 Oct	Scandinavian Airlines

Also check the deals for one-way flights from Seoul 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 Seoul to Barcelona in September from 490€

Return flights