Are there nonstop flights from Castellón de la Plana (CDT) to Budapest (BUD)?

Yes. Ryanair fly this route. Flight time is about 2h 32m.

What is the fastest connection from Castellón de la Plana (CDT) to Budapest (BUD)?

via Bologna ≈ 3h 2m, via Bergamo ≈ 3h 3m, via Palma de Mallorca ≈ 3h 9m (estimated flying time, excluding layovers).

from 15,000 JAL miles (economy, one way, based on the published award charts).

Castellón-Costa Azahar Airport (CDT) to Budapest Liszt Ferenc International Airport (BUD)・1,730 km

Nonstop flights available (1 airline). Flight time about 2h 32m. Nonstop return flights also operate.

With milesJAL 15,000 miles+ (via MAD)Economy, one way, estimate. Tap a connection for miles by cabin.

13 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.