Flight number record

AA 1020

American Airlines · Detroit to Miami

Route: DTW → MIA
Departs: 06:00
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 365 flights, with a median arrival 9 minutes early.

Set against the rest of the country, AA 1020's record is 12 points better than the US average of 77.6%. That gap is worth roughly 124 fewer late arrivals for every thousand flights.

On time

90.0%

Arrivals under 15 minutes late, of 360 completed flights

Avg delay

91 min

Across delayed arrivals only, not all flights

Cancelled

1.10%

National rate is 1.81%

1 hour+ late

3.3%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 9 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.

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 131 of 365 flights, with 06:05 (55 flights) and 05:30 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:00131 flights35.9%
Departs 06:0555 flights15.1%
Departs 05:3049 flights13.4%

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 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 90.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

AA 1020 next to DTW to MIA

Every carrier on DTW to MIA combined arrived on time 80.5% of the time across 1,815 flights, so AA 1020 is 10 points ahead of it. Across its whole network American Airlines managed 74.4%, which this flight beats by 16 points.

AA 1020 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AA 1020	365	90.0%	91 min	1.10%	A
All American Airlines on DTW–MIA	394	89.4%	102 min	1.27%	A
All carriers on DTW–MIA	1,815	80.5%	65 min	1.38%	B
American Airlines, whole network	986,297	74.4%	85 min	2.29%	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 91 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 flights91.2%
Oct–Dec 202592 flights87.0%
Jan–Mar 202690 flights83.7%
Apr–Jun 202691 flights97.8%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, AA 1020 did best on Tuesday at 98.1% on time and worst on Sunday at 84.6%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why AA 1020 runs late

One category carries most of the weight here. Carrier accounts for 48% of the 3,257 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.

Carrier
48%
Late-arriving aircraft
29%
National Airspace System
23%
Extreme weather
0%

The largest share of delay minutes, 48%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,560 of the 3,257 delay minutes reported here. The split is drawn from 3,257 delay minutes reported on AA 1020.

Cancellations sit at 1.10% against a national 1.81%, which is ordinary. Diversions add another 0.27%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 3.3% land an hour or more behind schedule, against 8.1% 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. 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.

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: 90.0% on time and 1.10% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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.

Key figures