TP 4399 then PR 3879 at San Francisco
Boston → San Francisco → Los Angeles
Timetable, San Francisco time
00:25TP 4399 from Boston at the gatealso JL 5938, FI 7897, EY 8328
07:16PR 3879 to Los Angeles leaves the gate
6 h 51 apart on the timetable
The last days
TP 4399 and PR 3879 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.