UA 604 then DL 954 at Houston
San Francisco → Houston → Detroit
Timetable, Houston time
06:32UA 604 from San Francisco at the gate
15:35DL 954 to Detroit leaves the gate
9 h 03 apart on the timetable
Today
From the airport’s board at 04:23 Houston time
06:26UA 604 expected at the gate6 min early
15:35DL 954 due to leave, no estimate yet
9 h 09 between the gates, on these times
The last days
UA 604 and DL 954 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.