Flight profile · Republic Airways
YX4577
New York (LGA) to Greensboro (GSO) · scheduled 7:09 PM – 10:47 PM
How YX4577 performs
544 operations, 2023-12-20 to 2026-06-30.
YX4577 arrived on time 73.4% of the time, against 82.0% for all LGA → GSO flights — this specific departure is 8.5 percentage points worse than the route as a whole. Against Republic Airways’s own flights on this route it is 6.9 points worse.
Source: US DOT Bureau of Transportation Statistics · 544 operations between 2023-12-20 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| YX4577 | 73.4% | 8.64% | -7 min | 14.5% | 544 |
| Republic Airways on LGA → GSO | 80.3% | 4.50% | -11 min | 8.2% | 4,114 |
| All LGA → GSO flights | 82.0% | 4.20% | -14 min | 7.3% | 5,716 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-12-20 to 2026-06-30
Other routes YX4577 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 |
|---|---|---|---|
| CMH→ORD Columbus to Chicago | 2026-06-20 – 2026-06-27 | 2 | — |
| ORD→CMH Chicago to Columbus | 2026-06-20 – 2026-06-27 | 2 | — |
| ORF→ORD Norfolk to Chicago | 2025-12-19 – 2025-12-19 | 1 | — |
| ORD→DSM Chicago to Des Moines | 2025-03-08 – 2025-03-29 | 4 | — |
| ORD→IND Chicago to Indianapolis | 2024-11-04 – 2024-11-04 | 1 | — |
| JFK→DCA New York to Washington | 2023-07-01 – 2024-09-03 | 280 | 81.4% |
| EYW→PHL Key West to Philadelphia | 2024-03-09 – 2024-03-30 | 4 | — |
| PHL→EYW Philadelphia to Key West | 2024-03-09 – 2024-03-30 | 4 | — |
Because the same number has served different journeys, the statistics above describe only the route YX4577 currently operates. Blending them would produce an average of two different flights.
Why YX4577 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding, fuelling — within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for YX4577 on LGA → GSO. 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 LGA → GSO
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| YX4574 | Republic Airways | 74.4% | 5 min early | 617 |
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 544 records of YX4577 operating LGA → GSO, 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.