AA 5643 then AA 2657 at DFW
South Bend → Dallas-Fort Worth → Miami
Timetable, Dallas-Fort Worth time
14:15AA 5643 from South Bend at the gate
18:00AA 2657 to Miami leaves the gate
3 h 45 apart on the timetable
The last days
AA 5643 and AA 2657 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.