Flight OddsUA4820 IAD → ORF
United Airlines · Washington, DC to Norfolk, VA · 40 flights observed, 2025-07-04 to 2026-04-25 · 158 mi
UA4820 covers more than one route in the data window — the stats below are for IAD → ORF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
87%
Median delay
-4 min
90th percentile
+83 min
Cancellation rate
3%
How often is UA4820 on time?
Across 40 flights on IAD → ORF from 2025-07-04 to 2026-04-25, UA4820 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +83 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 | 34 | 87% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 5% |
| 2+ hrs | 3 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 11 | 100% | -3 min |
| 2026-03 | 24 | 83% | +28 min |
| 2026-04 | 4 | 75% | +23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | 3 | 100% |
| Wed | 3 | 67% |
| Thu | 4 | 75% |
| Fri | 8 | 100% |
| Sat | 12 | 92% |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…