Flight OddsUA3531 EWR → SDF
United Airlines · Newark, NJ to Louisville, KY · 165 flights observed, 2025-09-25 to 2026-03-28 · 642 mi
UA3531 covers more than one route in the data window — the stats below are for EWR → SDF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
81%
Median delay
-16 min
90th percentile
+40 min
Cancellation rate
6%
How often is UA3531 on time?
Across 165 flights on EWR → SDF from 2025-09-25 to 2026-03-28, UA3531 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +40 min or later. 6% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 125 | 81% |
| 16-30 min | 9 | 6% |
| 31-60 min | 13 | 8% |
| 61-120 min | 4 | 3% |
| 2+ hrs | 3 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 6 | 83% | -15 min |
| 2025-10 | 30 | 93% | -12 min |
| 2025-11 | 26 | 77% | +9 min |
| 2025-12 | 16 | 88% | +4 min |
| 2026-01 | 24 | 83% | -3 min |
| 2026-02 | 25 | 80% | -12 min |
| 2026-03 | 27 | 67% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 21 | 81% |
| Tue | 22 | 86% |
| Wed | 24 | 79% |
| Thu | 21 | 86% |
| Fri | 24 | 79% |
| Sat | 23 | 78% |
| Sun | 19 | 79% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…