Flight OddsUA4939 ITH → IAD
United Airlines · Ithaca/Cortland, NY to Washington, DC · 364 flights observed, 2025-07-01 to 2026-06-30 · 250 mi
On-time arrival
78%
Median delay
-9 min
90th percentile
+136 min
Cancellation rate
3%
How often is UA4939 on time?
Across 364 flights on ITH → IAD from 2025-07-01 to 2026-06-30, UA4939 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +136 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 273 | 78% |
| 16-30 min | 18 | 5% |
| 31-60 min | 10 | 3% |
| 61-120 min | 12 | 3% |
| 2+ hrs | 39 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 28 | 86% | +15 min |
| 2025-08 | 31 | 74% | +32 min |
| 2025-09 | 30 | 93% | +2 min |
| 2025-10 | 31 | 84% | +41 min |
| 2025-11 | 30 | 77% | +19 min |
| 2025-12 | 29 | 76% | +45 min |
| 2026-01 | 29 | 69% | +14 min |
| 2026-02 | 26 | 73% | +25 min |
| 2026-03 | 28 | 68% | +82 min |
| 2026-04 | 30 | 80% | +34 min |
| 2026-05 | 31 | 84% | +18 min |
| 2026-06 | 29 | 66% | +89 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 50 | 80% |
| Tue | 50 | 82% |
| Wed | 50 | 82% |
| Thu | 51 | 75% |
| Fri | 50 | 74% |
| Sat | 51 | 82% |
| Sun | 50 | 68% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…