Flight OddsSTL → SLC Delta Air Lines
Delta Air Lines · St. Louis, MO to Salt Lake City, UT · 980 flights, 2025-07-01 to 2026-06-30 · aggregated across 7 flight numbers
On-time arrival
88%
Median delay
-9 min
90th percentile
+21 min
Cancellation rate
1%
How on-time is Delta Air Lines from STL to SLC?
Across every Delta Air Lines flight number on STL → SLC (980 flights, 2025-07-01 to 2026-06-30), 88% arrived within 15 minutes of schedule. Median arrival delay -9 min; the worst 10% ran +21 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 853 | 88% |
| 16-30 min | 37 | 4% |
| 31-60 min | 29 | 3% |
| 61-120 min | 26 | 3% |
| 2+ hrs | 24 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 87 | 91% | -4 min |
| 2025-08 | 86 | 91% | -2 min |
| 2025-09 | 81 | 93% | -3 min |
| 2025-10 | 87 | 90% | -4 min |
| 2025-11 | 83 | 88% | +2 min |
| 2025-12 | 78 | 78% | +7 min |
| 2026-01 | 60 | 92% | -9 min |
| 2026-02 | 65 | 77% | +42 min |
| 2026-03 | 85 | 88% | +12 min |
| 2026-04 | 86 | 86% | -1 min |
| 2026-05 | 85 | 95% | -7 min |
| 2026-06 | 86 | 86% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 147 | 85% |
| Tue | 147 | 91% |
| Wed | 143 | 90% |
| Thu | 144 | 91% |
| Fri | 143 | 91% |
| Sat | 104 | 83% |
| Sun | 141 | 84% |
DL flight numbers on STL → SLC
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…