Flight OddsUA3990 IAH → SDF
United Airlines · Houston, TX to Louisville, KY · 232 flights observed, 2025-10-26 to 2026-06-30 · 788 mi
UA3990 covers more than one route in the data window — the stats below are for IAH → SDF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
85%
Median delay
-8 min
90th percentile
+31 min
Cancellation rate
0%
How often is UA3990 on time?
Across 232 flights on IAH → SDF from 2025-10-26 to 2026-06-30, UA3990 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +31 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 | 195 | 85% |
| 16-30 min | 11 | 5% |
| 31-60 min | 15 | 7% |
| 61-120 min | 6 | 3% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 83% | +5 min |
| 2025-11 | 28 | 100% | -8 min |
| 2025-12 | 30 | 83% | +6 min |
| 2026-01 | 24 | 75% | +4 min |
| 2026-02 | 26 | 92% | -5 min |
| 2026-03 | 27 | 74% | +5 min |
| 2026-04 | 29 | 93% | -6 min |
| 2026-05 | 30 | 80% | +1 min |
| 2026-06 | 30 | 80% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 36 | 83% |
| Tue | 36 | 81% |
| Wed | 34 | 85% |
| Thu | 31 | 77% |
| Fri | 35 | 83% |
| Sat | 26 | 96% |
| Sun | 32 | 91% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…