Are there nonstop flights from Castellón de la Plana (CDT) to Southend-on-Sea (SEN)?

No. The fastest connection is via Palma de Mallorca, about 2h 52m of total flying time.

What is the fastest connection from Castellón de la Plana (CDT) to Southend-on-Sea (SEN)?

via Palma de Mallorca ≈ 2h 52m, via Berlin ≈ 4h 2m (estimated flying time, excluding layovers).

Castellón-Costa Azahar Airport (CDT) to London Southend Airport (SEN)・1,264 km

No nonstop flights. The fastest connection is via Palma de Mallorca (PMI), about 2h 52m of flying time (layover not included).

None.

2 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.