Flight OddsDL566 STL → ATL
Delta Air Lines · St. Louis, MO to Atlanta, GA · 161 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 STL → ATL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
87%
Median delay
-13 min
90th percentile
+22 min
Cancellation rate
2%
How often is DL566 on time?
Across 161 flights on STL → ATL from 2025-12-20 to 2026-06-30, DL566 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +22 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 136 | 87% |
| 16-30 min | 8 | 5% |
| 31-60 min | 8 | 5% |
| 61-120 min | 2 | 1% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 11 | 100% | -14 min |
| 2026-01 | 28 | 86% | -7 min |
| 2026-02 | 28 | 93% | -17 min |
| 2026-03 | 30 | 90% | -3 min |
| 2026-04 | 29 | 86% | +0 min |
| 2026-05 | 6 | 100% | -4 min |
| 2026-06 | 24 | 71% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 23 | 74% |
| Tue | 24 | 79% |
| Wed | 23 | 100% |
| Thu | 21 | 95% |
| Fri | 21 | 100% |
| Sat | 21 | 81% |
| Sun | 23 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…