Flight Sydney Airport departs from Sydney Sydney Airport at 21:40 and arrives at Gold Coast Gold Coast Airport at 22:00.
The flighttime is about 0h 20m. The distance travelled ("as the bird flies"): 623 Km. So the average speed is roughly 1869 Km.
The best day to arrive at Sydney is Saturday and it would be best to avoid Thursday, as prices are on average 52.59% higher than on Saturday. (Average prices, based on 855681 datapoints.)
We have a lot more statistics for flights JQ 428 and between Sydney and Gold Coast.