AirHint found the following cheapest return flights from Castellón (CDT) to London (STN) in December 2025 (see full year).

Return flights

29 Dec - 19 Jan	Ryanair	direct
29 Dec - 05 Jan	Ryanair	direct
29 Dec - 16 Jan	Ryanair	direct
29 Dec - 12 Jan	Ryanair	direct
29 Dec - 09 Jan	Ryanair	direct
29 Dec - 02 Jan	Ryanair	direct
29 Dec - 01 Jan	Ryanair
30 Dec - 06 Jan	Ryanair
28 Dec - 01 Jan	Vueling Airlines
31 Dec - 01 Jan	Wizz Air Malta

Also check the deals for one-way flights from Castellón to London in December.

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 Castellón to London in December from 93€

Return flights