DL 1905 then DL 1559 at LAX
New York JFK → Los Angeles → San Francisco
Timetable, Los Angeles time
14:03DL 1905 from New York JFK at the gate
20:10DL 1559 to San Francisco leaves the gate
6 h 07 apart on the timetable
The last days
DL 1905 and DL 1559 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.