Flight Haikou Meilan International Airport departs from Haikou Haikou Meilan International Airport at 23:45 and arrives at Shenzhen Shenzhen Bao'an International Airport at 01:10.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 389 Km. So the average speed is roughly 275 Km.
