Flight Reliability
DL 5117 · Delta Air Lines
Detroit → CHA (DTW–CHA)88% of its flights flew this route. The rest (CHA–DTW) are included in these numbers.
83
Pretty Reliable
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0.3%
- Cancelled
- 9 min early
- Median arrival delay
Based on 376 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
DL 5117 departing between 3–6 PM arrived on time 84% of the time, versus 71% between 6–9 PM.
Friday is doing you no favors.
DL 5117 arrived on time 85% of the time on Saturdays and just 68% on Fridays. That gap is worth planning around.
A bit behind the Delta Air Lines network.
DL 5117 arrived on time 78% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 376 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon80%(56 flights)
- Tue82%(56 flights)
- Wed79%(56 flights)
- Thu71%(55 flights)
- Fri68%(56 flights)
- Sat85%(40 flights)
- Sun83%(54 flights)
- 12–3 PM78%(264 flights)
- 3–6 PM84%(57 flights)
- 6–9 PM71%(52 flights)
92%
May
Jun 85% → May 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 85% | 27 |
| July 2025 | 75% | 24 |
| August 2025 | 93% | 30 |
| September 2025 | 89% | 26 |
| October 2025 | 84% | 32 |
| November 2025 | 82% | 28 |
| December 2025 | 52% | 31 |
| January 2026 | 59% | 27 |
| February 2026 | 76% | 25 |
| March 2026 | 73% | 30 |
| April 2026 | 71% | 44 |
| May 2026 | 92% | 49 |
- Departures on time
- 77%
- Diverted
- 0.5%
- Flights flown
- 373
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 376 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.