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

Return flights

04 May - 22 May	Air China
13 May - 22 May	Air China
06 May - 15 May	Air China
04 May - 12 May	Air China
04 May - 15 May	Air China
22 May - 26 May	Air China
19 May - 26 May	Air China
11 May - 20 May	Air China
11 May - 19 May	Air China
13 May - 17 May	Air China
11 May - 02 Jun	Etihad Airways
04 May - 02 Jun	Air China
22 May - 12 Jun	Air China
25 May - 03 Jun	Lufthansa
14 May - 05 Jun	Etihad Airways
19 May - 02 Jun	Lufthansa
14 May - 04 Jun	Lufthansa
28 May - 04 Jun	Scandinavian Airlines
28 May - 08 Jun	Scandinavian Airlines
27 May - 27 Jun	Air China

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 533€

Return flights