About 1 in 4 UA 4819 flights from Greensboro arrived 15+ minutes late, diverted or cancelled over the past year (29%); 3.2% were cancelled. The typical flight landed 8 minutes early.
UA 4819: GSO → IAD
Scheduled to leave Greensboro at 2:46 p.m. local time, operated by CommutAir as C5 4819. Over the past year it arrived on time 71% of the time (126 flights), worse than other UA flights on the route at that hour (75%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 19 | — |
| Tuesday | 20 | 75% |
| Wednesday | 20 | 65% |
| Thursday | 20 | 75% |
| Friday | 20 | 75% |
| Saturday | 8 | — |
| Sunday | 19 | — |
Why it was late
All flights GSO → IAD · Connecting off UA 4819? Check the risk
Questions
How often is UA 4819 from GSO to IAD late?
United Airlines 4819 from Greensboro/High Point, NC to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 29% of 126 scheduled flights between September 2025 and August 2026. 3.2% 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 United Airlines for today's flight. Method.