Flight OddsDL4120 DTW → SDF
Delta Air Lines · Detroit, MI to Louisville, KY · 45 flights observed, 2026-04-13 to 2026-06-05 · 306 mi
DL4120 covers more than one route in the data window — the stats below are for DTW → SDF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-6 min
90th percentile
+42 min
Cancellation rate
0%
How often is DL4120 on time?
Across 45 flights on DTW → SDF from 2026-04-13 to 2026-06-05, DL4120 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +42 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 | 35 | 78% |
| 16-30 min | 2 | 4% |
| 31-60 min | 4 | 9% |
| 61-120 min | 3 | 7% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 16 | 94% | -6 min |
| 2026-05 | 24 | 75% | +8 min |
| 2026-06 | 5 | 40% | +50 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 100% |
| Tue | 8 | 100% |
| Wed | 8 | 75% |
| Thu | 8 | 38% |
| Fri | 8 | 75% |
| Sat | No data | — |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…