UA 3750 then UA 6311 at Houston
Lubbock → Houston → Nashville
Timetable, Houston time
05:52UA 3750 from Lubbock at the gate
09:50UA 6311 to Nashville leaves the gate
3 h 58 apart on the timetable
Today
From the airport’s board at 15:23 Houston time
05:25UA 3750 reached the gate27 min early
10:22UA 6311 left the gate32 min late
4 h 57 between the gates
The last days
UA 3750 and UA 6311 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.