Flight profile · American Airlines
AA2323
Miami (MIA) to Chicago (ORD) · scheduled 9:20 PM – 11:55 PM
How AA2323 performs
166 operations, 2023-07-01 to 2026-06-30.
AA2323 arrived on time 70.6% of the time, against 74.6% for all MIA → ORD flights — this specific departure is 4.0 percentage points worse than the route as a whole. Against American Airlines’s own flights on this route it is 4.9 points worse.
Source: US DOT Bureau of Transportation Statistics · 166 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AA2323 | 70.6% | 1.20% | -4 min | 13.5% | 166 |
| American Airlines on MIA → ORD | 75.4% | 1.21% | -7 min | 9.0% | 8,788 |
| All MIA → ORD flights | 74.6% | 1.28% | -6 min | 9.5% | 13,297 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes AA2323 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→MIA Chicago to Miami | 2023-11-05 – 2026-05-20 | 446 | 63.7% |
| MIA→PHL Miami to Philadelphia | 2025-12-18 – 2026-04-06 | 110 | 88.5% |
| CLT→PHX Charlotte to Phoenix | 2025-12-04 – 2025-12-15 | 8 | — |
| BOS→DFW Boston to Dallas–Fort Worth | 2025-11-02 – 2025-12-02 | 30 | — |
| DEN→CLT Denver to Charlotte | 2024-11-05 – 2025-02-12 | 66 | — |
| ATL→ORD Atlanta to Chicago | 2024-12-19 – 2024-12-19 | 1 | — |
| CLT→RDU Charlotte to Raleigh–Durham | 2024-12-05 – 2024-12-18 | 14 | — |
| DFW→BOS Dallas–Fort Worth to Boston | 2024-09-08 – 2024-10-27 | 26 | — |
| PHL→SAN Philadelphia to San Diego | 2024-06-05 – 2024-09-03 | 91 | 54.7% |
| ELP→PHX El Paso to Phoenix | 2024-05-06 – 2024-06-04 | 30 | — |
| PHX→ELP Phoenix to El Paso | 2024-05-06 – 2024-06-04 | 30 | — |
| DFW→PHX Dallas–Fort Worth to Phoenix | 2024-04-04 – 2024-05-03 | 18 | — |
Because the same number has served different journeys, the statistics above describe only the route AA2323 currently operates. Blending them would produce an average of two different flights.
Why AA2323 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for AA2323 on MIA → ORD. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on MIA → ORD
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1983 | United Airlines | 81.7% | 8 min early | 922 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 166 records of AA2323 operating MIA → ORD, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
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