Flight OddsUA4004 SDF → IAD
United Airlines · Louisville, KY to Washington, DC · 30 flights observed, 2025-09-26 to 2025-10-25 · 451 mi
UA4004 covers more than one route in the data window — the stats below are for SDF → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
80%
Median delay
-12 min
90th percentile
+58 min
Cancellation rate
0%
How often is UA4004 on time?
Across 30 flights on SDF → IAD from 2025-09-26 to 2025-10-25, UA4004 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +58 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 | 24 | 80% |
| 16-30 min | 1 | 3% |
| 31-60 min | 2 | 7% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 5 | 100% | -15 min |
| 2025-10 | 25 | 76% | +16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 4 | 75% |
| Wed | 4 | 75% |
| Thu | 4 | 100% |
| Fri | 5 | 100% |
| Sat | 5 | 80% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…