About 1 in 8 AA 4484 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (12%); 1.6% were cancelled. The typical flight landed 17 minutes early.
AA 4484: ORD → PIT
Scheduled to leave Chicago at 9:45 a.m. local time, operated by Republic Airways as YX 4484. Over the past year it arrived on time 88% of the time (124 flights), better than other AA flights on the route at that hour (84%). Last seen in the data Aug 4, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 19 | — |
| Tuesday | 19 | — |
| Wednesday | 14 | — |
| Thursday | 19 | — |
| Friday | 20 | 90% |
| Saturday | 14 | — |
| Sunday | 19 | — |
Why it was late
All flights ORD → PIT · Connecting off AA 4484? Check the risk
Questions
How often is AA 4484 from ORD to PIT late?
American Airlines 4484 from Chicago, IL to Pittsburgh, PA arrived 15 or more minutes late, was diverted or was cancelled on 12% of 124 scheduled flights between September 2025 and August 2026. 1.6% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check American Airlines for today's flight. Method.