UA 5205 then UA 4306 at Houston
Chicago → Houston → Lubbock
Timetable, Houston time
11:30UA 5205 from Chicago at the gate
17:05UA 4306 to Lubbock leaves the gate
5 h 35 apart on the timetable
The last days
UA 5205 and UA 4306 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.