Flight OddsDL566 ATL → STL
Delta Air Lines · Atlanta, GA to St. Louis, MO · 40 flights observed, 2025-12-20 to 2026-06-30 · 484 mi
DL566 covers more than one route in the data window — the stats below are for ATL → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
79%
Median delay
-7 min
90th percentile
+23 min
Cancellation rate
3%
How often is DL566 on time?
Across 40 flights on ATL → STL from 2025-12-20 to 2026-06-30, DL566 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +23 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 31 | 79% |
| 16-30 min | 5 | 13% |
| 31-60 min | 3 | 8% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 11 | 82% | -4 min |
| 2026-01 | 4 | 75% | +3 min |
| 2026-06 | 24 | 79% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 67% |
| Tue | 6 | 100% |
| Wed | 5 | 100% |
| Thu | 4 | 50% |
| Fri | 5 | 100% |
| Sat | 6 | 83% |
| Sun | 7 | 57% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…