Flight OddsUA4521 ORD → AVL
United Airlines · Chicago, IL to Asheville, NC · 51 flights observed, 2025-12-02 to 2026-02-10 · 536 mi
UA4521 covers more than one route in the data window — the stats below are for ORD → AVL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
48%
Median delay
+17 min
90th percentile
+193 min
Cancellation rate
10%
How often is UA4521 on time?
Across 51 flights on ORD → AVL from 2025-12-02 to 2026-02-10, UA4521 arrived within 15 minutes of schedule 48% of the time. The median arrival delay was +17 min, and the worst 10% of flights arrived +193 min or later. 10% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 22 | 48% |
| 16-30 min | 6 | 13% |
| 31-60 min | 6 | 13% |
| 61-120 min | 4 | 9% |
| 2+ hrs | 8 | 17% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 15 | 47% | +51 min |
| 2026-01 | 21 | 48% | +124 min |
| 2026-02 | 10 | 50% | +88 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 14% |
| Tue | 9 | 44% |
| Wed | 7 | 43% |
| Thu | 7 | 57% |
| Fri | 5 | 60% |
| Sat | 5 | 60% |
| Sun | 6 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…