Flight profile · American Airlines
AA403
Chicago (ORD) to Buffalo (BUF) · scheduled 4:55 PM – 7:28 PM
How AA403 performs
293 operations, 2023-07-05 to 2026-06-30.
AA403 arrived on time 62.4% of the time, against 74.8% for all ORD → BUF flights — this specific departure is 12.4 percentage points worse than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 293 operations between 2023-07-05 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AA403 | 62.4% | 1.02% | 4 min | 15.5% | 293 |
| American Airlines on ORD → BUF | 62.8% | 1.43% | 4 min | 16.2% | 908 |
| All ORD → BUF flights | 74.8% | 1.77% | -3 min | 9.2% | 5,986 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-05 to 2026-06-30
Other routes AA403 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 |
|---|---|---|---|
| CLT→ORD Charlotte to Chicago | 2026-04-10 – 2026-05-19 | 12 | — |
| BOS→PHL Boston to Philadelphia | 2024-04-04 – 2026-01-05 | 131 | 81.5% |
| DFW→PIT Dallas–Fort Worth to Pittsburgh | 2023-11-05 – 2025-04-03 | 289 | 70.6% |
| BUF→ORD Buffalo to Chicago | 2023-07-06 – 2024-11-04 | 194 | 58.2% |
| DEN→DFW Denver to Dallas–Fort Worth | 2024-05-06 – 2024-06-04 | 30 | — |
| TPA→PHX Tampa to Phoenix | 2023-10-06 – 2023-11-04 | 30 | — |
| CLT→MYR Charlotte to Myrtle Beach | 2023-09-06 – 2023-10-04 | 29 | — |
| MYR→CLT Myrtle Beach to Charlotte | 2023-09-06 – 2023-10-04 | 29 | — |
Because the same number has served different journeys, the statistics above describe only the route AA403 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 293 records of AA403 operating ORD → BUF, 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.