About 6 in 10 DL 5310 flights from Raleigh arrived 15+ minutes late, diverted or cancelled over the past year (59%); 3.2% were cancelled. The typical flight landed 19 minutes late.
DL 5310: RDU → DCA
Scheduled to leave Raleigh at 3:43 p.m. local time, operated by Endeavor Air as 9E 5310. Over the past year it arrived on time 41% of the time (341 flights), in line with other DL flights on the route at that hour (41%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 45% |
| Tuesday | 52 | 40% |
| Wednesday | 50 | 46% |
| Thursday | 49 | 27% |
| Friday | 50 | 26% |
| Saturday | 35 | 69% |
| Sunday | 52 | 44% |
Why it was late
All flights RDU → DCA · Connecting off DL 5310? Check the risk
Questions
How often is DL 5310 from RDU to DCA late?
Delta Air Lines 5310 from Raleigh/Durham, NC to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 59% of 341 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.