Flight OddsUA4240 HSV → IAD
United Airlines · Huntsville, AL to Washington, DC · 326 flights observed, 2025-07-01 to 2026-06-30 · 596 mi
UA4240 covers more than one route in the data window — the stats below are for HSV → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-15 min
90th percentile
+36 min
Cancellation rate
2%
How often is UA4240 on time?
Across 326 flights on HSV → IAD from 2025-07-01 to 2026-06-30, UA4240 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +36 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 274 | 86% |
| 16-30 min | 11 | 3% |
| 31-60 min | 15 | 5% |
| 61-120 min | 9 | 3% |
| 2+ hrs | 9 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 74% | +5 min |
| 2025-08 | 31 | 87% | -6 min |
| 2025-09 | 30 | 90% | -7 min |
| 2025-10 | 31 | 94% | -12 min |
| 2025-11 | 29 | 79% | -4 min |
| 2025-12 | 30 | 90% | -9 min |
| 2026-01 | 17 | 94% | -10 min |
| 2026-02 | 19 | 79% | +18 min |
| 2026-03 | 26 | 88% | -1 min |
| 2026-04 | 17 | 88% | -10 min |
| 2026-05 | 31 | 74% | +17 min |
| 2026-06 | 30 | 97% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 49 | 96% |
| Tue | 36 | 86% |
| Wed | 37 | 84% |
| Thu | 51 | 90% |
| Fri | 52 | 92% |
| Sat | 43 | 77% |
| Sun | 50 | 76% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…