Flight OddsUA4399 ORD → MEM
United Airlines · Chicago, IL to Memphis, TN · 45 flights observed, 2026-03-05 to 2026-05-20 · 491 mi
UA4399 covers more than one route in the data window — the stats below are for ORD → MEM, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
-7 min
90th percentile
+88 min
Cancellation rate
7%
How often is UA4399 on time?
Across 45 flights on ORD → MEM from 2026-03-05 to 2026-05-20, UA4399 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +88 min or later. 7% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 30 | 71% |
| 16-30 min | 1 | 2% |
| 31-60 min | 4 | 10% |
| 61-120 min | 4 | 10% |
| 2+ hrs | 3 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 21 | 67% | +24 min |
| 2026-04 | 1 | 100% | -4 min |
| 2026-05 | 20 | 75% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 6 | 83% |
| Wed | 6 | 33% |
| Thu | 7 | 71% |
| Fri | 6 | 67% |
| Sat | 7 | 71% |
| Sun | 5 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…