Flight OddsUA3631 IAD → ORF
United Airlines · Washington, DC to Norfolk, VA · 12 flights observed, 2025-08-04 to 2025-09-21 · 158 mi
UA3631 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
100%
Median delay
-10 min
90th percentile
+3 min
Cancellation rate
0%
How often is UA3631 on time?
Across 12 flights on IAD → ORF from 2025-08-04 to 2025-09-21, UA3631 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +3 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 | 12 | 100% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 9 | 100% | -7 min |
| 2025-09 | 3 | 100% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 100% |
| Tue | 2 | 100% |
| Wed | 2 | 100% |
| Thu | 2 | 100% |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…