Flight OddsUA3631 ORF → IAD
United Airlines · Norfolk, VA to Washington, DC · 6 flights observed, 2025-09-07 to 2026-03-31 · 158 mi
UA3631 covers more than one route in the data window — the stats below are for ORF → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-13 min
90th percentile
+20 min
Cancellation rate
0%
How often is UA3631 on time?
Across 6 flights on ORF → IAD from 2025-09-07 to 2026-03-31, UA3631 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +20 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 | 5 | 83% |
| 16-30 min | 1 | 17% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 3 | 100% | -6 min |
| 2026-03 | 3 | 67% | -5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 1 | 100% |
| Tue | 1 | 100% |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| 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…