DL 2140 then AA 4407 at Houston
New York LaGuardia → Houston → Miami
Timetable, Houston time
10:03DL 2140 from New York LaGuardia at the gate
13:30AA 4407 to Miami leaves the gate
3 h 27 apart on the timetable
The last days
DL 2140 and AA 4407 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.