In general, when looking for the cheapest flight to Nassau, try to choose a flight departing in September for the best deal.
Most flyers found that booking flight tickets 36 days in advance of their planned departure date is, on average, the best time to get cheap flights to Nassau.
From most locations, the cheapest flights to Nassau are found on a Tuesday. Booking a Saturday departure is usually the most expensive.
On average you can find the best deals on plane tickets to Nassau when looking for flights with evening departure times.