Flight OddsUA231 DEN → SDF
United Airlines · Denver, CO to Louisville, KY · 139 flights observed, 2025-08-19 to 2026-01-05 · 1,024 mi
UA231 covers more than one route in the data window — the stats below are for DEN → SDF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
82%
Median delay
-4 min
90th percentile
+42 min
Cancellation rate
1%
How often is UA231 on time?
Across 139 flights on DEN → SDF from 2025-08-19 to 2026-01-05, UA231 arrived within 15 minutes of schedule 82% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +42 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 | 113 | 82% |
| 16-30 min | 7 | 5% |
| 31-60 min | 9 | 7% |
| 61-120 min | 4 | 3% |
| 2+ hrs | 5 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 54% | +38 min |
| 2025-09 | 30 | 80% | +15 min |
| 2025-10 | 31 | 90% | -8 min |
| 2025-11 | 28 | 86% | -1 min |
| 2025-12 | 31 | 84% | +4 min |
| 2026-01 | 5 | 80% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 20 | 90% |
| Tue | 19 | 79% |
| Wed | 20 | 90% |
| Thu | 19 | 68% |
| Fri | 20 | 90% |
| Sat | 20 | 90% |
| Sun | 20 | 65% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…