Flight profile · Republic Airways
YX4787
New York (LGA) to Greenville/Greer/Spartanburg (GSP) · scheduled 8:29 PM – 10:19 PM
How YX4787 performs
452 operations, 2024-12-05 to 2026-06-29.
YX4787 arrived on time 68.6% of the time, against 81.4% for all LGA → GSP flights — this specific departure is 12.8 percentage points worse than the route as a whole. Against Republic Airways’s own flights on this route it is 11.4 points worse.
Source: US DOT Bureau of Transportation Statistics · 452 operations between 2024-12-05 to 2026-06-29
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| YX4787 | 68.6% | 10.40% | -7 min | 12.6% | 452 |
| Republic Airways on LGA → GSP | 80.0% | 4.99% | -10 min | 7.4% | 2,406 |
| All LGA → GSP flights | 81.4% | 4.31% | -12 min | 7.3% | 3,878 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-12-05 to 2026-06-29
Other routes YX4787 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 |
|---|---|---|---|
| CID→ORD Cedar Rapids to Chicago | 2025-05-10 – 2025-05-31 | 3 | — |
| ORD→CID Chicago to Cedar Rapids | 2025-05-10 – 2025-05-31 | 3 | — |
| SYR→DCA Syracuse to Washington | 2024-11-05 – 2024-12-04 | 25 | — |
| PHL→CHS Philadelphia to Charleston | 2024-04-04 – 2024-05-05 | 32 | — |
| RIC→LGA Richmond to New York | 2023-11-25 – 2024-02-11 | 25 | — |
Because the same number has served different journeys, the statistics above describe only the route YX4787 currently operates. Blending them would produce an average of two different flights.
Why YX4787 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
Share of the delay minutes US DOT attributed to each cause for YX4787 on LGA → GSP. 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 → GSP
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| YX4534 | Republic Airways | 82.6% | 10 min early | 831 |
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 452 records of YX4787 operating LGA → GSP, 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.
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