AirHint found the following cheapest return flights from Cluj-napoca (CLJ) to Castellón (CDT) in May 2026 (see full year).
Return flights
| 16 May - 23 May | Wizz Air Malta | direct | |
| 16 May - 19 May | Wizz Air Malta | direct | |
| 14 May - 21 May | Wizz Air Malta | ||
| 13 May - 19 May | HiSky Europe |
Also check the deals for one-way flights from Cluj-napoca to Castellón in May.
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