DL 9972 then B6 988 at LAX
New York JFK → Los Angeles → Boston
Timetable, Los Angeles time
01:49DL 9972 from New York JFK at the gate
10:40B6 988 to Boston leaves the gate
8 h 51 apart on the timetable
The last days
DL 9972 and B6 988 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.