Flight OddsDL3990 MSN → DTW
Delta Air Lines · Madison, WI to Detroit, MI · 34 flights observed, 2025-10-06 to 2025-11-08 · 311 mi
DL3990 covers more than one route in the data window — the stats below are for MSN → DTW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
94%
Median delay
-8 min
90th percentile
+4 min
Cancellation rate
0%
How often is DL3990 on time?
Across 34 flights on MSN → DTW from 2025-10-06 to 2025-11-08, DL3990 arrived within 15 minutes of schedule 94% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +4 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 | 32 | 94% |
| 16-30 min | 1 | 3% |
| 31-60 min | 1 | 3% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 26 | 92% | -5 min |
| 2025-11 | 8 | 100% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 5 | 80% |
| Wed | 5 | 100% |
| Thu | 5 | 100% |
| Fri | 5 | 80% |
| Sat | 5 | 100% |
| Sun | 4 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…