Flight OddsDL3984 GRB → DTW
Delta Air Lines · Green Bay, WI to Detroit, MI · 177 flights observed, 2026-01-05 to 2026-06-30 · 287 mi
DL3984 covers more than one route in the data window — the stats below are for GRB → DTW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
87%
Median delay
-11 min
90th percentile
+32 min
Cancellation rate
1%
How often is DL3984 on time?
Across 177 flights on GRB → DTW from 2026-01-05 to 2026-06-30, DL3984 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +32 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 | 153 | 87% |
| 16-30 min | 4 | 2% |
| 31-60 min | 5 | 3% |
| 61-120 min | 4 | 2% |
| 2+ hrs | 9 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 27 | 78% | +13 min |
| 2026-02 | 28 | 93% | -4 min |
| 2026-03 | 29 | 76% | +15 min |
| 2026-04 | 30 | 87% | +20 min |
| 2026-05 | 31 | 90% | -1 min |
| 2026-06 | 30 | 100% | -18 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 25 | 96% |
| Tue | 26 | 85% |
| Wed | 25 | 68% |
| Thu | 25 | 84% |
| Fri | 25 | 92% |
| Sat | 25 | 88% |
| Sun | 24 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…