Flight Reliability
DL 4810 · Delta Air Lines
Detroit → Rochester (DTW–ROC)
86
Pretty Reliable
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0%
- Cancelled
- 7 min early
- Median arrival delay
Based on 195 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 4810 arrived on time 89% of the time on Saturdays and just 57% on Sundays. That gap is worth planning around.
A bit behind the Delta Air Lines network.
DL 4810 arrived on time 78% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 195 scheduled flights, only 0.0% were cancelled.
Recent months have been rougher.
DL 4810 arrived on time 67% of the time over the last three months in the data, compared with 84% in the three months before that.
The breakdown
- Mon75%(28 flights)
- Tue82%(28 flights)
- Wed75%(28 flights)
- Thu86%(28 flights)
- Fri82%(28 flights)
- Sat89%(27 flights)
- Sun57%(28 flights)
32%
Dec
Jun 74% → Dec 32% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 23 |
| July 2025 | 77% | 31 |
| August 2025 | 90% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 77% | 30 |
| December 2025 | 32% | 19 |
- Departures on time
- 80%
- Diverted
- 0%
- Flights flown
- 195
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 195 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.