Cheapest return GMP–BCN flights, September

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

Return flights

15 Sep - 23 Sep Air China
07 Sep - 13 Sep Air China
16 Sep - 23 Sep Air China
08 Sep - 16 Sep Air China
09 Sep - 16 Sep Air China
10 Sep - 16 Sep Air China
08 Sep - 15 Sep Air China
01 Sep - 04 Sep Air China
01 Sep - 15 Sep Air China
08 Sep - 17 Sep Air China
17 Sep - 03 Oct Air China
12 Sep - 30 Oct Air China
13 Sep - 02 Oct Air China
09 Sep - 14 Oct Air China
17 Sep - 06 Oct Air China
28 Sep - 12 Oct Air China
29 Sep - 11 Oct Air China
29 Sep - 08 Oct Air China
27 Sep - 08 Oct Air China
28 Sep - 10 Oct Air China

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

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