Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 22:40 and arrives at Phuket Phuket International Airport at 00:05.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 276 Km. So the average speed is roughly 195 Km.
The best day to arrive at Bangkok is Wednesday and it would be best to avoid Monday, as prices are on average 62.4% higher than on Wednesday. (Average prices, based on 33011820 datapoints.)
We have a lot more statistics for flights DD 5518 and between Bangkok and Phuket.