Flight OddsUA511 PHL → ORD
United Airlines · Philadelphia, PA to Chicago, IL · 117 flights observed, 2025-07-01 to 2025-10-25 · 678 mi
UA511 covers more than one route in the data window — the stats below are for PHL → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-7 min
90th percentile
+26 min
Cancellation rate
1%
How often is UA511 on time?
Across 117 flights on PHL → ORD from 2025-07-01 to 2025-10-25, UA511 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +26 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 97 | 84% |
| 16-30 min | 8 | 7% |
| 31-60 min | 4 | 3% |
| 61-120 min | 3 | 3% |
| 2+ hrs | 3 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 80% | +5 min |
| 2025-08 | 30 | 87% | +2 min |
| 2025-09 | 30 | 83% | +7 min |
| 2025-10 | 25 | 88% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 15 | 87% |
| Tue | 17 | 88% |
| Wed | 17 | 94% |
| Thu | 17 | 88% |
| Fri | 17 | 94% |
| Sat | 17 | 71% |
| Sun | 15 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…