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 South Dakota to New South Wales 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 New South Wales. Flights to New South Wales from South Dakota in July are about $1,017 on average during July, but can be found for as low as $635.