Flight number record
AA 1020
American Airlines · Detroit to Miami
- Route
- DTW → MIA
- Departs
- 06:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AA 1020, check with American Airlines.
AA 1020 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 365 flights, with a median arrival 11 minutes early.
Set against the rest of the country, AA 1020's record is 12 points better than the US average of 77.3%. That gap is worth roughly 121 fewer late arrivals for every thousand flights.
Key figures
On time
89.4%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
0.82%
National rate is 1.89%
1 hour+ late
2.2%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 11 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When AA 1020 flies
AA 1020 flies DTW to MIA without a single fixed slot. Its most common scheduled departure was 06:00, used on 188 of 365 flights, with 05:30 (49 flights) next.
- Departs 06:00188 flights51.5%
- Departs 05:3049 flights13.4%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and AA 1020 runs level with that at 89.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
AA 1020 next to DTW to MIA
Every carrier on DTW to MIA combined arrived on time 80.7% of the time across 1,757 flights, so AA 1020 is 9 points ahead of it. Across its whole network American Airlines managed 74.7%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 1020 | 365 | 89.4% | 71 min | 0.82% | A+ |
| All American Airlines on DTW–MIA | 394 | 88.9% | 84 min | 1.02% | A |
| All carriers on DTW–MIA | 1,757 | 80.7% | 63 min | 1.42% | B |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | C |
Across the year
AA 1020 quarter by quarter
AA 1020 did not run the same all year. Its best quarter was Apr–Jun 2026 at 97.8% on time and its weakest Jan–Mar 2026 at 83.7%, a swing of 14 points on roughly 73 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 flights90.0%
- Oct–Dec 202592 flights87.0%
- Jan–Mar 202690 flights83.7%
- Apr–Jun 202691 flights97.8%
- Jul–Sep 202662 flights88.5%
Scale runs 75% to 100%.
By weekday, AA 1020 did best on Tuesday at 96.1% on time and worst on Sunday at 82.7%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AA 1020 runs when it is late
AA 1020 often beats the schedule: 143 of 360 completed flights, 40%, arrived 15 minutes or more early. Most of the lateness is short. 21 of the 38 late arrivals were under half an hour behind, and 8 reached an hour or more.
- 15+ min early143 flights39.7%
- Within 15 min179 flights49.7%
- 15–29 min late21 flights5.8%
- 30–59 min late9 flights2.5%
- 1–2 hours late4 flights1.1%
- 2+ hours late4 flights1.1%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
A late pushback is often recovered here: of 24 departures that left 15 minutes late or more, 8 still arrived on time. In the other direction, 22 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 MIA.
The worst days
Worst days for AA 1020
The latest arrival of the period was on 14 March 2026, 15 hours 39 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 March 2026 | 15 hours 39 minutes | Late-arriving aircraft |
| 6 June 2026 | 4 hours 25 minutes | Carrier |
| 28 January 2026 | 2 hours 43 minutes | Carrier |
| 24 January 2026 | 2 hours 38 minutes | Carrier |
| 3 October 2025 | 1 hour 47 minutes | Carrier |
Delay causes
Why AA 1020 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 2,690 reported delay minutes.
- 40%Carrier
- 35%Late-arriving aircraft
- 25%National Airspace System
- 0%Extreme weather
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,690 reported delay minutes here, that single category outweighs weather by 35 to one. The split is drawn from 2,690 delay minutes reported on AA 1020.
Cancellations are rare at 0.82%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.2% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 1,145 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.
Every one of the 365 flights under AA 1020 in the data flew DTW to MIA. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 1020
For a booking, AA 1020 has one of the better records a US domestic flight can show: 89.4% on time and 0.82% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- DTW to MIA, every carrier and departure
- MIA to DTW, the return direction
- Delta Air Lines 1468 on the same route85.4%
- Delta Air Lines 866 on the same route74.0%
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Miami International (MIA) 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.