Flight OddsDL1623 SLC → DEN
Delta Air Lines · Salt Lake City, UT to Denver, CO · 359 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 SLC → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-7 min
90th percentile
+26 min
Cancellation rate
1%
How often is DL1623 on time?
Across 359 flights on SLC → DEN from 2025-07-01 to 2026-06-30, DL1623 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +26 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 | 298 | 84% |
| 16-30 min | 22 | 6% |
| 31-60 min | 14 | 4% |
| 61-120 min | 8 | 2% |
| 2+ hrs | 11 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 69% | +11 min |
| 2025-08 | 29 | 76% | +16 min |
| 2025-09 | 30 | 90% | +1 min |
| 2025-10 | 30 | 83% | +1 min |
| 2025-11 | 27 | 89% | -2 min |
| 2025-12 | 31 | 87% | +0 min |
| 2026-01 | 29 | 93% | -2 min |
| 2026-02 | 27 | 85% | +9 min |
| 2026-03 | 31 | 81% | +1 min |
| 2026-04 | 30 | 80% | +24 min |
| 2026-05 | 30 | 100% | -11 min |
| 2026-06 | 30 | 80% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 80% |
| Tue | 52 | 85% |
| Wed | 52 | 79% |
| Thu | 50 | 88% |
| Fri | 49 | 86% |
| Sat | 48 | 85% |
| Sun | 51 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…