Flight profile · American Airlines
AA1387
Chicago (ORD) to Denver (DEN) · scheduled 8:45 PM – 10:37 PM
How AA1387 performs
991 operations, 2023-07-01 to 2026-06-30.
AA1387 arrived on time 59.8% of the time, against 77.0% for all ORD → DEN flights — this specific departure is 17.2 percentage points worse than the route as a whole. Against American Airlines’s own flights on this route it is 9.7 points worse.
Source: US DOT Bureau of Transportation Statistics · 991 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AA1387 | 59.8% | 1.61% | 5 min | 16.2% | 991 |
| American Airlines on ORD → DEN | 69.5% | 1.12% | -2 min | 11.8% | 3,581 |
| All ORD → DEN flights | 77.0% | 1.11% | -6 min | 8.7% | 18,950 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does AA1387 run worse on particular days?
Tuesday is historically the most reliable day and Thursday the least, a gap of 11.9 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes AA1387 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 |
|---|---|---|---|
| BNA→DFW Nashville to Dallas–Fort Worth | 2026-01-06 – 2026-02-11 | 37 | — |
| DFW→RDM Dallas–Fort Worth to Redmond | 2024-05-23 – 2024-05-23 | 1 | — |
| RDM→DFW Redmond to Dallas–Fort Worth | 2024-05-23 – 2024-05-23 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route AA1387 currently operates. Blending them would produce an average of two different flights.
Why AA1387 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for AA1387 on ORD → DEN. 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 ORD → DEN
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1803 | United Airlines | 85.2% | 10 min early | 606 |
| UA767 | United Airlines | 69.3% | 2 min early | 1,050 |
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 991 records of AA1387 operating ORD → DEN, 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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