CI 5320 then B6 318 at JFK
Anchorage → New York → Boston
Timetable, New York time
03:03CI 5320 from Anchorage at the gate
08:00B6 318 to Boston leaves the gate
4 h 57 apart on the timetable
The last days
CI 5320 and B6 318 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.