Flight OddsUA3503 IAD → SDF
United Airlines · Washington, DC to Louisville, KY · 27 flights observed, 2025-07-01 to 2025-07-31 · 451 mi
UA3503 covers more than one route in the data window — the stats below are for IAD → SDF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
81%
Median delay
-9 min
90th percentile
+44 min
Cancellation rate
0%
How often is UA3503 on time?
Across 27 flights on IAD → SDF from 2025-07-01 to 2025-07-31, UA3503 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +44 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 | 22 | 81% |
| 16-30 min | 1 | 4% |
| 31-60 min | 2 | 7% |
| 61-120 min | 1 | 4% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 81% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 5 | 80% |
| Wed | 5 | 80% |
| Thu | 5 | 80% |
| Fri | 4 | 100% |
| Sat | No data | — |
| Sun | 4 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…