Flight number record
AA 1566
American Airlines · Miami to Raleigh
- Route
- MIA → RDU
- Departs
- 21:45
- Flights
- 360
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s AA 1566, check with American Airlines.
AA 1566 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 360 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.6%, so AA 1566 runs 6 points behind the country as a whole. Across a thousand flights that is about 61 extra late arrivals.
Key figures
On time
71.5%
Arrivals under 15 minutes late, of 354 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
1.67%
National rate is 1.81%
1 hour+ late
11.3%
National rate is 8.1%
These figures cover 360 flights between July 2025 and June 2026. Beyond the headline rate, 11.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When AA 1566 flies
AA 1566 flies MIA to RDU without a single fixed slot. Its most common scheduled departure was 21:45, used on 135 of 360 flights, with 19:12 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 21:45135 flights37.5%
- Departs 19:1241 flights11.4%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 21:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and AA 1566 runs level with that at 71.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
AA 1566 next to MIA to RDU
Every carrier on MIA to RDU combined arrived on time 71.4% of the time across 2,347 flights, so AA 1566 is about level with it. American flew 1,700 flights on the same city pair under all its flight numbers, including this one, and those ran 71.4% on time. Across its whole network American Airlines managed 74.4%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 1566thin sample | 360 | 71.5% | 61 min | 1.67% | C |
| All American Airlines on MIA–RDU | 1,700 | 71.4% | 72 min | 1.47% | C |
| All carriers on MIA–RDU | 2,347 | 71.4% | 76 min | 1.70% | C |
| American Airlines, whole network | 986,297 | 74.4% | 85 min | 2.29% | C |
Across the year
AA 1566 quarter by quarter
AA 1566 did not run the same all year. Its best quarter was Jul–Sep 2025 at 80.4% on time and its weakest Jan–Mar 2026 at 62.4%, a swing of 18 points on roughly 90 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202592 flights80.4%
- Oct–Dec 202588 flights70.9%
- Jan–Mar 202689 flights62.4%
- Apr–Jun 202691 flights71.4%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, AA 1566 did best on Wednesday at 82.4% on time and worst on Friday at 65.4%. Each day rests on about 51 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Delay causes
Why AA 1566 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 6,167 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 45%Late-arriving aircraft
- 33%Carrier
- 14%National Airspace System
- 8%Extreme weather
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 6,167 reported delay minutes here, that single category outweighs weather by 6 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 6,167 delay minutes reported on AA 1566.
Cancellations sit at 1.67% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 700 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on one other city pair in the data, including MIA to CLT (1), but none flew often enough under AA 1566 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MIA to RDU only.
One caution: this is a thin sample. 360 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking AA 1566
For a booking, read AA 1566 as 71.5% on time with 1.67% cancelled over 360 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- MIA to RDU, every carrier and departure
- RDU to MIA, the return direction
- Delta Air Lines 2992 on the same route64.7%
- Miami International (MIA) delay statistics
- Raleigh-Durham International (RDU) delay statistics
- American Airlines on-time record
- Every American Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means American Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.