AA 2154 then AA 3971 at DFW
Monterrey → Dallas-Fort Worth → Tyler
Timetable, Dallas-Fort Worth time
15:27AA 2154 from Monterrey at the gate
16:22AA 3971 to Tyler leaves the gate
55 min apart on the timetable
The last days
AA 2154 and AA 3971 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.