AirHint found the following cheapest one-way flights from Seoul (GMP) to Barcelona (BCN) in May 2026 (see full year).
One-Way flights
| 25 May | Parata Air | ||
| 24 May | Air Seoul, Inc | ||
| 31 May | T'way Air | ||
| 29 May | Korean Air | ||
| 21 May | China Eastern | ||
| 23 May | Air China |
Also check the deals for return flights from Seoul to Barcelona in May.
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