Flight OddsDL4166 DTW → ATW
Delta Air Lines · Detroit, MI to Appleton, WI · 249 flights observed, 2025-07-01 to 2026-06-30 · 296 mi
DL4166 covers more than one route in the data window — the stats below are for DTW → ATW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
-7 min
90th percentile
+90 min
Cancellation rate
1%
How often is DL4166 on time?
Across 249 flights on DTW → ATW from 2025-07-01 to 2026-06-30, DL4166 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +90 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 176 | 71% |
| 16-30 min | 16 | 6% |
| 31-60 min | 18 | 7% |
| 61-120 min | 19 | 8% |
| 2+ hrs | 18 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 45% | +45 min |
| 2025-08 | 31 | 97% | -9 min |
| 2025-09 | 30 | 97% | -6 min |
| 2025-10 | 6 | 100% | -8 min |
| 2025-12 | 9 | 44% | +41 min |
| 2026-01 | 16 | 56% | +33 min |
| 2026-02 | 11 | 18% | +72 min |
| 2026-03 | 23 | 52% | +47 min |
| 2026-04 | 30 | 80% | +1 min |
| 2026-05 | 31 | 74% | +15 min |
| 2026-06 | 29 | 79% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 36 | 69% |
| Tue | 37 | 62% |
| Wed | 33 | 73% |
| Thu | 33 | 61% |
| Fri | 36 | 75% |
| Sat | 36 | 81% |
| Sun | 36 | 78% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…