Flight Reliability
DL 4888 · Delta Air Lines
OAJ → Atlanta (OAJ–ATL)96% of its flights flew this route. The rest (DTW–MBS, MBS–DTW) are included in these numbers.
- 91%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 0.8%
- Cancelled
- 9 min early
- Median arrival delay
Based on 239 historical flights. Data through May 2026.
What the data says
The 9 AM–12 PM departure wins.
DL 4888 departing between 9 AM–12 PM arrived on time 100% of the time, versus 90% between 3–6 AM.
Mondays have been rough.
DL 4888 arrived on time 97% of the time on Fridays and just 79% on Mondays. That gap is worth planning around.
Better than the OAJ–ATL route average.
DL 4888 arrived on time 91% of the time, versus 83% across the OAJ–ATL route.
Better than the Delta Air Lines network average.
DL 4888 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon79%(33 flights)
- Tue94%(33 flights)
- Wed94%(33 flights)
- Thu94%(33 flights)
- Fri97%(33 flights)
- Sat90%(39 flights)
- Sun88%(33 flights)
- 3–6 AM90%(227 flights)
- 9 AM–12 PM100%(10 flights)
Jun 80% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 30 |
| July 2025 | 90% | 31 |
| August 2025 | 90% | 31 |
| September 2025 | 100% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 90% | 30 |
| December 2025 | 95% | 19 |
| January 2026 | 84% | 25 |
| May 2026 | 100% | 10 |
- Departures on time
- 95%
- Diverted
- 0%
- Flights flown
- 237
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 239 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.