Flight OddsDL1537 STL → DTW
Delta Air Lines · St. Louis, MO to Detroit, MI · 107 flights observed, 2025-07-04 to 2025-12-19 · 440 mi
DL1537 covers more than one route in the data window — the stats below are for STL → DTW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
79%
Median delay
-15 min
90th percentile
+40 min
Cancellation rate
0%
How often is DL1537 on time?
Across 107 flights on STL → DTW from 2025-07-04 to 2025-12-19, DL1537 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +40 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 | 85 | 79% |
| 16-30 min | 9 | 8% |
| 31-60 min | 4 | 4% |
| 61-120 min | 6 | 6% |
| 2+ hrs | 3 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 23 | 65% | +14 min |
| 2025-08 | 16 | 81% | -3 min |
| 2025-09 | 11 | 91% | -12 min |
| 2025-10 | 21 | 90% | -11 min |
| 2025-11 | 19 | 89% | -6 min |
| 2025-12 | 17 | 65% | +19 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 20 | 65% |
| Tue | 19 | 89% |
| Wed | 19 | 84% |
| Thu | 19 | 100% |
| Fri | 15 | 60% |
| Sat | 1 | 0% |
| Sun | 14 | 79% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…