We have prepared for you the list of the cheapest deals for Ryanair flight from Porto (OPO) to Castellón (CDT) by the month of departure.
Cheapest flights for June 2026
| Departure date | Cheapest price | |
|---|---|---|
| 04 Jun 2026 | 33 € | Book Now |
| 11 Jun 2026 | 57 € | Book Now |
| 25 Jun 2026 | 57 € | Book Now |
| 21 Jun 2026 | 58 € | Book Now |
| 28 Jun 2026 | 62 € | Book Now |
Cheapest flights for July 2026
| Departure date | Cheapest price | |
|---|---|---|
| 30 Jul 2026 | 33 € | Book Now |
| 16 Jul 2026 | 47 € | Book Now |
| 09 Jul 2026 | 52 € | Book Now |
| 02 Jul 2026 | 54 € | Book Now |
| 23 Jul 2026 | 56 € | Book Now |
Cheapest flights for August 2026
| Departure date | Cheapest price | |
|---|---|---|
| 02 Aug 2026 | 58 € | Book Now |
| 30 Aug 2026 | 58 € | Book Now |
| 16 Aug 2026 | 58 € | Book Now |
| 09 Aug 2026 | 58 € | Book Now |
| 06 Aug 2026 | 65 € | Book Now |
Cheapest flights for September 2026
| Departure date | Cheapest price | |
|---|---|---|
| 10 Sep 2026 | 36 € | Book Now |
| 13 Sep 2026 | 50 € | Book Now |
| 20 Sep 2026 | 50 € | Book Now |
| 24 Sep 2026 | 51 € | Book Now |
| 17 Sep 2026 | 53 € | Book Now |
The deals are updated by AirHint regularly. Please keep in mind that the price may go up as tickets are purchased by other travellers. Only the cheapest one-way flights are offered. Book fast to secure these cheap Ryanair prices.
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