About 1 in 6 DL 1550 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (18%); 1.2% were cancelled. The typical flight landed 5 minutes early.
DL 1550: ATL → RDU
Scheduled to leave Atlanta at 2:31 p.m. local time. Over the past year it arrived on time 82% of the time (338 flights), in line with other DL flights on the route at that hour (80%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 51 | 82% |
| Tuesday | 50 | 82% |
| Wednesday | 50 | 90% |
| Thursday | 49 | 92% |
| Friday | 49 | 80% |
| Saturday | 42 | 76% |
| Sunday | 47 | 70% |
Why it was late
All flights ATL → RDU · Connecting off DL 1550? Check the risk
DL 1550: RDU → ATL
Scheduled to leave Raleigh at 4:15 p.m. local time. Over the past year it arrived on time 80% of the time (338 flights), in line with other DL flights on the route at that hour (80%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 51 | 82% |
| Tuesday | 50 | 84% |
| Wednesday | 50 | 92% |
| Thursday | 49 | 84% |
| Friday | 49 | 71% |
| Saturday | 42 | 74% |
| Sunday | 47 | 72% |
Why it was late
All flights RDU → ATL · Connecting off DL 1550? Check the risk
Questions
How often is DL 1550 from ATL to RDU late?
Delta Air Lines 1550 from Atlanta, GA to Raleigh/Durham, NC arrived 15 or more minutes late, was diverted or was cancelled on 18% of 338 scheduled flights between September 2025 and August 2026. 1.2% were cancelled.
How often is DL 1550 from RDU to ATL late?
Delta Air Lines 1550 from Raleigh/Durham, NC to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 20% of 338 scheduled flights between September 2025 and August 2026. 1.8% 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.