To save up to 14% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Waterloo to Sydney from $1,179 1-2 weeks out and tickets from $1,248 for flights departing within the next 72 hours.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, July can be a great choice for travel to Sydney. Flights to Sydney from Waterloo in July are about $1,017 on average during July, but can be found for as low as $635.