Flight Reliability
DL 4813 · Delta Air Lines
CHA → Detroit (CHA–DTW)91% of its flights flew this route. The rest (ATL–TYS, TYS–ATL) are included in these numbers.
84
Pretty Reliable
WanderNerd Reliability Score
- 76%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 0%
- Cancelled
- 7 min early
- Median arrival delay
Based on 182 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
DL 4813 arrived on time 92% of the time on Wednesdays and just 65% on Mondays. That gap is worth planning around.
A bit behind the CHA–DTW route.
DL 4813 arrived on time 76% of the time, versus 83% across the CHA–DTW route.
A bit behind the Delta Air Lines network.
DL 4813 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 182 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon65%(26 flights)
- Tue76%(25 flights)
- Wed92%(25 flights)
- Thu72%(25 flights)
- Fri72%(25 flights)
- Sat81%(31 flights)
- Sun76%(25 flights)
- 12–3 PM—(8 flights)
- 3–6 PM76%(174 flights)
63%
Dec
Jun 61% → Dec 63% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 61% | 18 |
| July 2025 | 60% | 25 |
| August 2025 | 84% | 32 |
| September 2025 | 82% | 28 |
| October 2025 | 88% | 32 |
| November 2025 | 82% | 28 |
| December 2025 | 63% | 19 |
- Departures on time
- 75%
- Diverted
- 0%
- Flights flown
- 182
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 182 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.