About 1 in 5 AA 4578 flights from Greensboro arrived 15+ minutes late, diverted or cancelled over the past year (19%); 6.5% were cancelled. The typical flight landed 10 minutes early.
AA 4578: GSO → LGA
Scheduled to leave Greensboro at 6:00 a.m. local time, operated by Republic Airways as YX 4578. Over the past year it arrived on time 81% of the time (323 flights), in line with other AA flights on the route at that hour (81%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 75% |
| Tuesday | 49 | 84% |
| Wednesday | 52 | 81% |
| Thursday | 50 | 80% |
| Friday | 51 | 78% |
| Saturday | 44 | 80% |
| Sunday | 24 | 92% |
Why it was late
All flights GSO → LGA · Connecting off AA 4578? Check the risk
Questions
How often is AA 4578 from GSO to LGA late?
American Airlines 4578 from Greensboro/High Point, NC to New York, NY arrived 15 or more minutes late, was diverted or was cancelled on 19% of 323 scheduled flights between September 2025 and August 2026. 6.5% 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.