ON TIMEBOARD

AA 1227 on time

American Airlines 1227: Miami to Dallas at 8:40 a.m. (past 12 months)

On time
83%
149 flights · likely 76–88%
Cancelled
0.0%
of scheduled flights
Typical arrival
−9 min
median vs schedule
When late
+61 min
average delay
Similar flights
82%
AA, same route & hour

About 1 in 6 AA 1227 flights from Miami arrived 15+ minutes late, diverted or cancelled over the past year (17%); 0.0% were cancelled. The typical flight landed 9 minutes early.

AA 1227: MIA → DFW

Scheduled to leave Miami at 8:40 a.m. local time. Over the past year it arrived on time 83% of the time (149 flights), in line with other AA flights on the route at that hour (82%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2025: 78% on time (27 flights)78AprMay 2025: too few flights (4 flights)MayJun 2025: 92% on time (26 flights)92JunJul 2025: 81% on time (31 flights)81JulAug 2025: 81% on time (31 flights)81AugSep 2025: too few flights (2 flights)SepApr 2026: 79% on time (24 flights)79AprMay 2026: 77% on time (31 flights)77MayJun 2026: 77% on time (30 flights)77JunJul 2026: 84% on time (31 flights)84JulAug 2026: 94% on time (31 flights)94Aug

By day of week

DayFlightsOn time
Monday2291%
Tuesday2277%
Wednesday2190%
Thursday2186%
Friday2190%
Saturday2181%
Sunday2162%

Why it was late

Late inbound plane 37%Airline (crew, maintenance, ops) 32%Air traffic & airport (NAS) 18%Severe weather 13%

All flights MIA → DFW · Connecting off AA 1227? Check the risk

Questions

How often is AA 1227 from MIA to DFW late?

American Airlines 1227 from Miami, FL to Dallas/Fort Worth, TX arrived 15 or more minutes late, was diverted or was cancelled on 17% of 149 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check American Airlines for today's flight. Method.