Flight OddsDL1623 DEN → SLC
Delta Air Lines · Denver, CO to Salt Lake City, UT · 272 flights observed, 2025-07-01 to 2026-06-30 · 391 mi
DL1623 covers more than one route in the data window — the stats below are for DEN → SLC, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-11 min
90th percentile
+38 min
Cancellation rate
1%
How often is DL1623 on time?
Across 272 flights on DEN → SLC from 2025-07-01 to 2026-06-30, DL1623 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +38 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 224 | 84% |
| 16-30 min | 10 | 4% |
| 31-60 min | 13 | 5% |
| 61-120 min | 12 | 4% |
| 2+ hrs | 9 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 28 | 57% | +18 min |
| 2025-08 | 31 | 71% | +32 min |
| 2025-09 | 27 | 93% | -8 min |
| 2025-10 | 26 | 88% | -9 min |
| 2025-11 | 26 | 85% | -5 min |
| 2025-12 | 19 | 89% | -8 min |
| 2026-02 | 16 | 88% | +13 min |
| 2026-03 | 31 | 87% | -3 min |
| 2026-04 | 12 | 75% | +28 min |
| 2026-05 | 25 | 100% | -14 min |
| 2026-06 | 27 | 89% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 40 | 80% |
| Tue | 40 | 88% |
| Wed | 39 | 82% |
| Thu | 40 | 80% |
| Fri | 39 | 79% |
| Sat | 29 | 86% |
| Sun | 41 | 90% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…