Flight OddsDL3981 GRR → DTW
Delta Air Lines · Grand Rapids, MI to Detroit, MI · 90 flights observed, 2025-09-11 to 2025-12-19 · 120 mi
DL3981 covers more than one route in the data window — the stats below are for GRR → DTW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
73%
Median delay
-4 min
90th percentile
+105 min
Cancellation rate
0%
How often is DL3981 on time?
Across 90 flights on GRR → DTW from 2025-09-11 to 2025-12-19, DL3981 arrived within 15 minutes of schedule 73% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +105 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 66 | 73% |
| 16-30 min | 7 | 8% |
| 31-60 min | 4 | 4% |
| 61-120 min | 5 | 6% |
| 2+ hrs | 8 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 17 | 88% | +3 min |
| 2025-10 | 30 | 93% | -8 min |
| 2025-11 | 26 | 69% | +33 min |
| 2025-12 | 17 | 29% | +84 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 14 | 64% |
| Tue | 12 | 75% |
| Wed | 14 | 71% |
| Thu | 14 | 86% |
| Fri | 12 | 75% |
| Sat | 10 | 70% |
| Sun | 14 | 71% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…