About 1 in 8 DL 5120 flights from Raleigh arrived 15+ minutes late, diverted or cancelled over the past year (13%); 3.2% were cancelled. The typical flight landed 10 minutes early.
DL 5120: RDU → EWR
Scheduled to leave Raleigh at 7:00 a.m. local time, operated by Endeavor Air as 9E 5120. Over the past year it arrived on time 87% of the time (346 flights), in line with other DL flights on the route at that hour (85%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 51 | 86% |
| Tuesday | 50 | 86% |
| Wednesday | 50 | 92% |
| Thursday | 49 | 96% |
| Friday | 49 | 86% |
| Saturday | 48 | 85% |
| Sunday | 49 | 76% |
Why it was late
All flights RDU → EWR · Connecting off DL 5120? Check the risk
Questions
How often is DL 5120 from RDU to EWR late?
Delta Air Lines 5120 from Raleigh/Durham, NC to Newark, NJ arrived 15 or more minutes late, was diverted or was cancelled on 13% of 346 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 Delta Air Lines for today's flight. Method.