Flight OddsUA552 ONT → ORD
United Airlines · Ontario, CA to Chicago, IL · 24 flights observed, 2026-03-05 to 2026-03-28 · 1,700 mi
UA552 covers more than one route in the data window — the stats below are for ONT → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
-8 min
90th percentile
+82 min
Cancellation rate
4%
How often is UA552 on time?
Across 24 flights on ONT → ORD from 2026-03-05 to 2026-03-28, UA552 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +82 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 | 17 | 74% |
| 16-30 min | 1 | 4% |
| 31-60 min | 2 | 9% |
| 61-120 min | 1 | 4% |
| 2+ hrs | 2 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 23 | 74% | +16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 100% |
| Tue | 3 | 67% |
| Wed | 3 | 100% |
| Thu | 4 | 75% |
| Fri | 3 | 67% |
| Sat | 4 | 75% |
| Sun | 3 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…