Flight OddsDL2821 STL → DTW
Delta Air Lines · St. Louis, MO to Detroit, MI · 24 flights observed, 2026-04-13 to 2026-05-06 · 440 mi
DL2821 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
96%
Median delay
-12 min
90th percentile
+10 min
Cancellation rate
4%
How often is DL2821 on time?
Across 24 flights on STL → DTW from 2026-04-13 to 2026-05-06, DL2821 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +10 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 22 | 96% |
| 16-30 min | 1 | 4% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 18 | 100% | -12 min |
| 2026-05 | 5 | 80% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 100% |
| Tue | 4 | 100% |
| Wed | 4 | 75% |
| Thu | 3 | 100% |
| Fri | 2 | 100% |
| Sat | 3 | 100% |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…