Flight OddsUA4579 MEM → ORD
United Airlines · Memphis, TN to Chicago, IL · 26 flights observed, 2025-07-01 to 2025-07-31 · 491 mi
UA4579 covers more than one route in the data window — the stats below are for MEM → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
61%
Median delay
+11 min
90th percentile
+151 min
Cancellation rate
4%
How often is UA4579 on time?
Across 26 flights on MEM → ORD from 2025-07-01 to 2025-07-31, UA4579 arrived within 15 minutes of schedule 61% of the time. The median arrival delay was +11 min, and the worst 10% of flights arrived +151 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 14 | 61% |
| 16-30 min | 2 | 9% |
| 31-60 min | 2 | 9% |
| 61-120 min | 2 | 9% |
| 2+ hrs | 3 | 13% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 23 | 61% | +35 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 5 | 100% |
| Wed | 5 | 60% |
| Thu | 4 | 50% |
| Fri | 1 | 0% |
| Sat | No data | — |
| Sun | 4 | 25% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…