Some figures for the Arnold Scheme (WW2 RAF cadet flying training in the USA) are:
Primary Flying Training - 60 hours.
Basic Flying Training - 70 hours.
Advanced Flying Training, for example, took Jack Currie's (Lancaster, Halifax & Mosquito pilot who wrote three books on his wartime experiences) total to 250 hours, including 31 Night and 35 Instrument. Then, on return to Britain, conversion training would be required for whatever types the newly-qualified pilot had been selected for.
Flight training carried out in Britain was fifty or sixty hours less than the Arnold syllabus.