Flight OddsSLC → STL Delta Air Lines
Delta Air Lines · Salt Lake City, UT to St. Louis, MO · 980 flights, 2025-07-01 to 2026-06-30 · aggregated across 7 flight numbers
On-time arrival
85%
Median delay
-10 min
90th percentile
+35 min
Cancellation rate
1%
How on-time is Delta Air Lines from SLC to STL?
Across every Delta Air Lines flight number on SLC → STL (980 flights, 2025-07-01 to 2026-06-30), 85% arrived within 15 minutes of schedule. Median arrival delay -10 min; the worst 10% ran +35 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 823 | 85% |
| 16-30 min | 44 | 5% |
| 31-60 min | 49 | 5% |
| 61-120 min | 40 | 4% |
| 2+ hrs | 16 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 88 | 81% | +5 min |
| 2025-08 | 87 | 82% | +7 min |
| 2025-09 | 81 | 79% | +5 min |
| 2025-10 | 88 | 89% | -2 min |
| 2025-11 | 83 | 83% | -1 min |
| 2025-12 | 78 | 81% | +5 min |
| 2026-01 | 61 | 89% | -4 min |
| 2026-02 | 65 | 82% | +1 min |
| 2026-03 | 86 | 94% | -9 min |
| 2026-04 | 85 | 86% | -1 min |
| 2026-05 | 86 | 88% | -4 min |
| 2026-06 | 84 | 83% | -1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 147 | 87% |
| Tue | 147 | 89% |
| Wed | 144 | 90% |
| Thu | 144 | 83% |
| Fri | 145 | 84% |
| Sat | 104 | 82% |
| Sun | 141 | 76% |
DL flight numbers on SLC → STL
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…