UA 4 then UA 3750 at Houston
London → Houston → San Francisco
Timetable, Houston time
16:40UA 4 from London at the gate
21:30UA 3750 to San Francisco leaves the gate
4 h 50 apart on the timetable
Today
From the airport’s board at 05:27 Houston time
16:12UA 4 expected at the gate28 min early
21:30UA 3750 due to leave, no estimate yet
5 h 18 between the gates, on these times
The last days
UA 4 and UA 3750 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.
Later flights to San Francisco
UA 160921:455 h 05 after UA 4 on the timetable