In general, when booking your flight to Adelaide, April is the cheapest month on average.
Most flyers found that booking flight tickets 0 days in advance of their planned departure date is, on average, the best time to get cheap flights to Adelaide.
From most locations, the cheapest flights to Adelaide are found on a Wednesday. Booking a Sunday departure is usually the most expensive.
Typically, cheap prices to Adelaide are most often found for noon flights. Cheap prices are less likely for evening flights.