Flight Noi Bai International Airport departs from Hanoi Noi Bai International Airport at 15:40 and arrives at Xiamen Gaoqi International Airport at 18:40.
The flighttime is about 2h 00m. The distance travelled ("as the bird flies"): 1376 Km. So the average speed is roughly 688 Km.
There is an 1 hour time difference between Hanoi and Xiamen