About 1 in 13 DL 1388 flights from Raleigh arrived 15+ minutes late, diverted or cancelled over the past year (8%); 1.4% were cancelled. The typical flight landed 15 minutes early.
DL 1388: RDU → DTW
Scheduled to leave Raleigh at 5:30 a.m. local time. Over the past year it arrived on time 92% of the time (365 flights), in line with other DL flights on the route at that hour (92%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 91% |
| Tuesday | 52 | 98% |
| Wednesday | 52 | 94% |
| Thursday | 52 | 98% |
| Friday | 52 | 88% |
| Saturday | 52 | 90% |
| Sunday | 52 | 87% |
Why it was late
All flights RDU → DTW · Connecting off DL 1388? Check the risk
Questions
How often is DL 1388 from RDU to DTW late?
Delta Air Lines 1388 from Raleigh/Durham, NC to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 8% of 365 scheduled flights between September 2025 and August 2026. 1.4% 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 Delta Air Lines for today's flight. Method.