Flight OddsDL3821 SDF → DTW
Delta Air Lines · Louisville, KY to Detroit, MI · 143 flights observed, 2026-01-05 to 2026-06-30 · 306 mi
DL3821 covers more than one route in the data window — the stats below are for SDF → DTW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-16 min
90th percentile
+21 min
Cancellation rate
2%
How often is DL3821 on time?
Across 143 flights on SDF → DTW from 2026-01-05 to 2026-06-30, DL3821 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +21 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 121 | 86% |
| 16-30 min | 8 | 6% |
| 31-60 min | 4 | 3% |
| 61-120 min | 4 | 3% |
| 2+ hrs | 3 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 24 | 83% | -6 min |
| 2026-02 | 27 | 78% | +10 min |
| 2026-03 | 29 | 86% | -6 min |
| 2026-04 | 30 | 93% | +1 min |
| 2026-05 | 6 | 83% | -13 min |
| 2026-06 | 24 | 92% | -13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 22 | 82% |
| Tue | 22 | 95% |
| Wed | 20 | 90% |
| Thu | 20 | 70% |
| Fri | 20 | 85% |
| Sat | 16 | 94% |
| Sun | 20 | 90% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…