Flight profile · American Airlines
AA421
Dallas–Fort Worth (DFW) to Syracuse (SYR) · scheduled 6:30 PM – 10:36 PM
How AA421 performs
544 operations, 2023-11-05 to 2026-06-30.
AA421 arrived on time 50.7% of the time, against 53.2% for all DFW → SYR flights — this specific departure is 2.5 percentage points worse than the route as a whole. Against American Airlines’s own flights on this route it is 2.5 points worse.
Source: US DOT Bureau of Transportation Statistics · 544 operations between 2023-11-05 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AA421 | 50.7% | 2.76% | 13 min | 19.1% | 544 |
| American Airlines on DFW → SYR | 53.2% | 2.09% | 12 min | 18.8% | 1,004 |
| All DFW → SYR flights | 53.2% | 2.09% | 12 min | 18.8% | 1,004 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-11-05 to 2026-06-30
Other routes AA421 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.
Because the same number has served different journeys, the statistics above describe only the route AA421 currently operates. Blending them would produce an average of two different flights.
Why AA421 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
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for AA421 on DFW → SYR. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 544 records of AA421 operating DFW → SYR, 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.