About 1 in 8 DL 2978 flights from Cleveland arrived 15+ minutes late, diverted or cancelled over the past year (12%); 2.0% were cancelled. The typical flight landed 14 minutes early.
DL 2978: CLE → ATL
Scheduled to leave Cleveland at 12:35 p.m. local time. Over the past year it arrived on time 88% of the time (347 flights), in line with other DL 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 | 51 | 90% |
| Tuesday | 50 | 88% |
| Wednesday | 50 | 90% |
| Thursday | 50 | 90% |
| Friday | 49 | 88% |
| Saturday | 48 | 90% |
| Sunday | 49 | 80% |
Why it was late
All flights CLE → ATL · Connecting off DL 2978? Check the risk
DL 2978: ATL → CLE
Scheduled to leave Atlanta at 9:43 a.m. local time. Over the past year it arrived on time 88% of the time (342 flights), in line with other DL 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 | 51 | 82% |
| Tuesday | 50 | 86% |
| Wednesday | 50 | 94% |
| Thursday | 50 | 94% |
| Friday | 49 | 86% |
| Saturday | 43 | 91% |
| Sunday | 49 | 84% |
Why it was late
All flights ATL → CLE · Connecting off DL 2978? Check the risk
Questions
How often is DL 2978 from CLE to ATL late?
Delta Air Lines 2978 from Cleveland, OH to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 12% of 347 scheduled flights between September 2025 and August 2026. 2.0% were cancelled.
How often is DL 2978 from ATL to CLE late?
Delta Air Lines 2978 from Atlanta, GA to Cleveland, OH arrived 15 or more minutes late, was diverted or was cancelled on 12% of 342 scheduled flights between September 2025 and August 2026. 2.1% 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.