Flight Reliability
DL 2548 · Delta Air Lines
Detroit → Miami (DTW–MIA)
78
Usually Fine
WanderNerd Reliability Score
- 72%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 0.3%
- Cancelled
- 4 min early
- Median arrival delay
Based on 328 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
DL 2548 arrived on time 89% of the time on Tuesdays and just 60% on Saturdays. That gap is worth planning around.
Lagging the DTW–MIA route.
DL 2548 arrived on time 72% of the time, versus 80% across the DTW–MIA route.
Lagging the Delta Air Lines network.
DL 2548 arrived on time 72% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 328 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon69%(48 flights)
- Tue89%(47 flights)
- Wed73%(45 flights)
- Thu78%(46 flights)
- Fri72%(46 flights)
- Sat60%(47 flights)
- Sun60%(48 flights)
- 12–3 PM—(1 flights)
- 6–9 PM72%(325 flights)
- 9 PM–12 AM—(1 flights)
90%
Apr
Jun 58% → Apr 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 58% | 26 |
| July 2025 | 69% | 26 |
| August 2025 | 61% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 84% | 31 |
| November 2025 | 60% | 30 |
| December 2025 | 48% | 27 |
| January 2026 | 65% | 31 |
| February 2026 | 89% | 28 |
| March 2026 | 74% | 31 |
| April 2026 | 90% | 30 |
- Departures on time
- 74%
- Diverted
- 0%
- Flights flown
- 327
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 328 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.