About 1 in 13 UA 3423 flights from Cincinnati arrived 15+ minutes late, diverted or cancelled over the past year (8%); 3.4% were cancelled. The typical flight landed 16 minutes early.
UA 3423: CVG → EWR
Scheduled to leave Cincinnati at 6:00 a.m. local time, operated by Republic Airways as YX 3423. Over the past year it arrived on time 92% of the time (177 flights), better than other UA flights on the route at that hour (88%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 26 | 92% |
| Tuesday | 24 | 92% |
| Wednesday | 25 | 92% |
| Thursday | 25 | 92% |
| Friday | 26 | 92% |
| Saturday | 26 | 96% |
| Sunday | 25 | 88% |
Why it was late
All flights CVG → EWR · Connecting off UA 3423? Check the risk
Questions
How often is UA 3423 from CVG to EWR late?
United Airlines 3423 from Cincinnati, OH to Newark, NJ arrived 15 or more minutes late, was diverted or was cancelled on 8% of 177 scheduled flights between September 2025 and August 2026. 3.4% 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.