Flight Reliability
DL 4830 · Delta Air Lines
Cincinnati → Detroit (CVG–DTW)98% of its flights flew this route. The rest (LGA–RIC, RIC–LGA) are included in these numbers.
- 91%
- Arrive within 15 minutes
- 2 min early
- Average arrival delay
- 1.1%
- Cancelled
- 12 min early
- Median arrival delay
Based on 189 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
DL 4830 arrived on time 100% of the time on Thursdays and just 78% on Wednesdays. That gap is worth planning around.
Better than the CVG–DTW route average.
DL 4830 arrived on time 91% of the time, versus 83% across the CVG–DTW route.
Better than the Delta Air Lines network average.
DL 4830 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.
Recent months have been rougher.
DL 4830 arrived on time 84% of the time over the last three months in the data, compared with 97% in the three months before that.
The breakdown
- Mon96%(26 flights)
- Tue93%(27 flights)
- Wed78%(27 flights)
- Thu100%(27 flights)
- Fri89%(26 flights)
- Sat96%(25 flights)
- Sun86%(28 flights)
- 9 AM–12 PM—(1 flights)
- 12–3 PM92%(183 flights)
- 3–6 PM—(1 flights)
- 6–9 PM—(1 flights)
Jun 87% → Dec 63% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 15 |
| July 2025 | 97% | 30 |
| August 2025 | 94% | 31 |
| September 2025 | 100% | 30 |
| October 2025 | 93% | 30 |
| November 2025 | 97% | 29 |
| December 2025 | 63% | 19 |
- Departures on time
- 89%
- Diverted
- 0.5%
- Flights flown
- 186
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 189 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.