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

Return flights

11 May - 25 May	Air China
17 May - 23 May	Air China
18 May - 24 May	Air China
08 May - 12 May	Air China
10 May - 25 May	Air China
15 May - 26 May	Air China
15 May - 28 May	Air China
18 May - 23 May	Air China
25 May - 29 May	Air China
26 May - 30 May	Air China
30 May - 07 Jun	Air China
22 May - 06 Jun	Air China
30 May - 08 Jun	Air China
22 May - 02 Jun	Air China
26 May - 09 Jun	Air China
25 May - 01 Jun	Air China
24 May - 07 Jun	Air China
31 May - 13 Jun	Air China
26 May - 05 Jun	Japan Airlines

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

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 Seoul to Barcelona in May from 604€

Return flights