UA 5347 then AA 6439 at LAX
Las Vegas → Los Angeles → San Francisco
Timetable, Los Angeles time
11:53UA 5347 from Las Vegas at the gate
16:26AA 6439 to San Francisco leaves the gate
4 h 33 apart on the timetable
The last days
UA 5347 and AA 6439 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.