LECS, Castellón.
LEOC, Ocaña, Toledo (not sure)
LEMT, Casarrubios del monte, Toledo
LERM, Robledillo de Mohernando, Guadalajara
......
It depends... What do you need?
You can find a lot of fields, but if you need a good tarmac, it will be more difficult to find...
And if you want IFR app, even more.