Flight OddsUA4383 GRR → ORD
United Airlines · Grand Rapids, MI to Chicago, IL · 19 flights observed, 2025-08-19 to 2026-05-31 · 137 mi
UA4383 covers more than one route in the data window — the stats below are for GRR → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
63%
Median delay
+12 min
90th percentile
+143 min
Cancellation rate
0%
How often is UA4383 on time?
Across 19 flights on GRR → ORD from 2025-08-19 to 2026-05-31, UA4383 arrived within 15 minutes of schedule 63% of the time. The median arrival delay was +12 min, and the worst 10% of flights arrived +143 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 12 | 63% |
| 16-30 min | 4 | 21% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 3 | 16% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 9 | 56% | +29 min |
| 2025-09 | 1 | 100% | +12 min |
| 2026-05 | 9 | 67% | +34 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 2 | 100% |
| Tue | 3 | 67% |
| Wed | 3 | 67% |
| Thu | 3 | 0% |
| Fri | 4 | 75% |
| Sat | 2 | 100% |
| Sun | 2 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…