About 1 in 6 AA 3427 flights from Miami arrived 15+ minutes late, diverted or cancelled over the past year (16%); 0.3% were cancelled. The typical flight landed 5 minutes early.
AA 3427: MIA → BHM
Scheduled to leave Miami at 10:55 p.m. local time, operated by Envoy as MQ 3427. Over the past year it arrived on time 84% of the time (308 flights), in line with other AA flights on the route at that hour (83%). Last seen in the data Aug 31, 2026.
Usually American Airlines's last flight of the day from Miami to Birmingham (66% of days). American Airlines's last MIA–BHM flight was cancelled 0.5% of the time, against 1.2% for its earlier ones. If it's cancelled, the next American Airlines flight is usually around 4:52 p.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 47 | 87% |
| Tuesday | 40 | 90% |
| Wednesday | 40 | 83% |
| Thursday | 44 | 93% |
| Friday | 45 | 76% |
| Saturday | 46 | 80% |
| Sunday | 46 | 80% |
Why it was late
All flights MIA → BHM · Connecting off AA 3427? Check the risk
Questions
How often is AA 3427 from MIA to BHM late?
American Airlines 3427 from Miami, FL to Birmingham, AL arrived 15 or more minutes late, was diverted or was cancelled on 16% of 308 scheduled flights between September 2025 and August 2026. 0.3% 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.