Due to multiple factors, expect to potentially pay more when booking in October. For low rates, May can be a great choice for travel to Virginia Beach. Flights to Virginia Beach from Casablanca in May are about R17 622 on average during May, but can be found for as low as R13 012.
When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Casablanca is roughly less than Norfolk. You can assume this to be the case over the next 9 days.
You can imagine temperatures to be in the 32 °C range in July. The weather in Norfolk is generally hotter than Casablanca's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.