Flight OddsUA4587 ORD → GRR
United Airlines · Chicago, IL to Grand Rapids, MI · 33 flights observed, 2026-05-22 to 2026-06-24 · 137 mi
UA4587 covers more than one route in the data window — the stats below are for ORD → GRR, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
82%
Median delay
-16 min
90th percentile
+56 min
Cancellation rate
0%
How often is UA4587 on time?
Across 33 flights on ORD → GRR from 2026-05-22 to 2026-06-24, UA4587 arrived within 15 minutes of schedule 82% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +56 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 | 27 | 82% |
| 16-30 min | 2 | 6% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 3 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 9 | 78% | +17 min |
| 2026-06 | 24 | 83% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 100% |
| Tue | 5 | 100% |
| Wed | 5 | 60% |
| Thu | 4 | 50% |
| Fri | 5 | 80% |
| Sat | 5 | 100% |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…