Flight Reliability
DL 2478 · Delta Air Lines
Raleigh–Durham → Atlanta (RDU–ATL)93% of its flights flew this route. The rest (DTW–CVG, LAS–SEA) are included in these numbers.
- 89%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 0%
- Cancelled
- 6 min early
- Median arrival delay
Based on 209 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
DL 2478 arrived on time 97% of the time on Fridays and just 79% on Saturdays. That gap is worth planning around.
Better than the Delta Air Lines network average.
DL 2478 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 209 scheduled flights, only 0.0% were cancelled.
Recent months have been rougher.
DL 2478 arrived on time 81% of the time over the last three months in the data, compared with 96% in the three months before that.
The breakdown
- Mon87%(30 flights)
- Tue86%(29 flights)
- Wed93%(30 flights)
- Thu90%(31 flights)
- Fri97%(29 flights)
- Sat79%(29 flights)
- Sun90%(31 flights)
- 6–9 AM90%(195 flights)
- 3–6 PM—(1 flights)
- 6–9 PM—(6 flights)
- 9 PM–12 AM—(7 flights)
Jun 90% → Dec 74% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 30 |
| July 2025 | 94% | 31 |
| August 2025 | 97% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 97% | 31 |
| November 2025 | 73% | 30 |
| December 2025 | 74% | 19 |
- Departures on time
- 90%
- Diverted
- 0%
- Flights flown
- 209
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 209 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.