Flight Reliability
DL 4176 · Delta Air Lines
ATW → Detroit (ATW–DTW)
88
Pretty Reliable
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 1.6%
- Cancelled
- 8 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
DL 4176 arrived on time 94% of the time on Saturdays and just 79% on Thursdays. That gap is worth planning around.
Better than the ATW–DTW route average.
DL 4176 arrived on time 86% of the time, versus 79% across the ATW–DTW route.
A bit ahead of the Delta Air Lines network.
DL 4176 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.
Trending in the right direction.
DL 4176 arrived on time 87% of the time over the last three months in the data, compared with 73% in the three months before that.
The breakdown
- Mon82%(50 flights)
- Tue92%(51 flights)
- Wed90%(51 flights)
- Thu79%(52 flights)
- Fri81%(52 flights)
- Sat94%(51 flights)
- Sun85%(52 flights)
100%
May
Jun 100% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 100% | 30 |
| July 2025 | 90% | 30 |
| August 2025 | 94% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 83% | 30 |
| December 2025 | 77% | 31 |
| January 2026 | 57% | 30 |
| February 2026 | 86% | 28 |
| March 2026 | 67% | 27 |
| April 2026 | 93% | 30 |
| May 2026 | 100% | 31 |
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 359
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.