CZ 6731 then 3U 1063 at Guangzhou
Sanya → Guangzhou → Xi'an
Timetable, Guangzhou time
08:25CZ 6731 from Sanya at the gate
13:053U 1063 to Xi'an leaves the gate
4 h 40 apart on the timetable
The last days
CZ 6731 and 3U 1063 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.