Flight OddsUA1840 DEN → SLC
United Airlines · Denver, CO to Salt Lake City, UT · 162 flights observed, 2025-07-01 to 2026-06-30 · 391 mi
UA1840 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
86%
Median delay
-8 min
90th percentile
+30 min
Cancellation rate
0%
How often is UA1840 on time?
Across 162 flights on DEN → SLC from 2025-07-01 to 2026-06-30, UA1840 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +30 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 138 | 86% |
| 16-30 min | 7 | 4% |
| 31-60 min | 6 | 4% |
| 61-120 min | 6 | 4% |
| 2+ hrs | 4 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 84% | -3 min |
| 2025-08 | 18 | 89% | +3 min |
| 2025-12 | 14 | 71% | +28 min |
| 2026-01 | 5 | 100% | -8 min |
| 2026-03 | 3 | 100% | -15 min |
| 2026-04 | 30 | 87% | -4 min |
| 2026-05 | 30 | 90% | +9 min |
| 2026-06 | 30 | 83% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 24 | 75% |
| Tue | 23 | 87% |
| Wed | 22 | 91% |
| Thu | 23 | 83% |
| Fri | 22 | 82% |
| Sat | 23 | 87% |
| Sun | 24 | 96% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…