Flight number record
AA 1566
American Airlines · Miami to Raleigh
- Route
- MIA → RDU
- Departs
- 21:45
- Flights
- 353
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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, 9 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 353 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so AA 1566 runs 9 points behind the country as a whole. Across a thousand flights that is about 88 extra late arrivals.
Key figures
On time
68.5%
Arrivals under 15 minutes late, of 346 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
1.70%
National rate is 1.89%
1 hour+ late
12.7%
National rate is 8.3%
These figures cover 353 flights between September 2025 and August 2026. Beyond the headline rate, 12.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 353 flights, with 19:12 (42 flights) next.
- Departs 21:45135 flights38.2%
- Departs 19:1242 flights11.9%
Scale runs 0% to 100%.
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 70.1%, and AA 1566 runs level with that at 68.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
AA 1566 next to MIA to RDU
Every carrier on MIA to RDU combined arrived on time 71.7% of the time across 2,365 flights, so AA 1566 is 3 points behind it. American flew 1,662 flights on the same city pair under all its flight numbers, including this one, and those ran 72.1% on time. Across its whole network American Airlines managed 74.7%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 1566thin sample | 353 | 68.5% | 60 min | 1.70% | C |
| All American Airlines on MIA–RDU | 1,662 | 72.1% | 72 min | 1.44% | C |
| All carriers on MIA–RDU | 2,365 | 71.7% | 73 min | 1.61% | C |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | 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 83.3% on time and its weakest Jul–Sep 2026 at 61.1%, a swing of 22 points on roughly 71 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 202530 flights83.3%
- Oct–Dec 202588 flights70.9%
- Jan–Mar 202689 flights62.4%
- Apr–Jun 202691 flights71.4%
- Jul–Sep 202655 flights61.1%
Scale runs 55% to 90%.
By weekday, AA 1566 did best on Wednesday at 76.6% on time and worst on Saturday at 62.0%. Each day rests on about 50 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AA 1566 runs when it is late
The 109 late arrivals split 35 under half an hour, 30 between 30 and 60 minutes, and 44 an hour or more.
- 15+ min early74 flights21.4%
- Within 15 min163 flights47.1%
- 15–29 min late35 flights10.1%
- 30–59 min late30 flights8.7%
- 1–2 hours late31 flights9.0%
- 2+ hours late13 flights3.8%
Scale runs 0% to 100%.
Share of 346 completed flights by arrival against schedule.
15 of 104 late departures made up the time and arrived on time, 14% of them. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at RDU.
The worst days
Worst days for AA 1566
The latest arrival of the period was on 20 June 2026, 4 hours 8 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across June, March, November, October and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 June 2026 | 4 hours 8 minutes | Extreme weather |
| 6 March 2026 | 3 hours 25 minutes | Late-arriving aircraft |
| 15 November 2025 | 2 hours 54 minutes | Carrier |
| 6 October 2025 | 2 hours 47 minutes | Carrier |
| 6 July 2026 | 2 hours 43 minutes | National Airspace System |
Delay causes
Why AA 1566 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 6,558 reported delay minutes.
- 41%Late-arriving aircraft
- 32%Carrier
- 18%National Airspace System
- 9%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,558 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 6,558 delay minutes reported on AA 1566.
Cancellations sit at 1.70% against a national 1.89%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
12.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.
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. 353 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, AA 1566 is a flight to put a long connection behind. 12.7% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
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 route67.3%
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.