AA 3146 then DL 5409 at Charlotte
Las Vegas → Charlotte → Boston
Timetable, Charlotte time
06:10AA 3146 from Las Vegas at the gate
07:05DL 5409 to Boston leaves the gate
55 min apart on the timetable
The last days
AA 3146 and DL 5409 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.