Flight OddsUA4439 GRR → ORD
United Airlines · Grand Rapids, MI to Chicago, IL · 36 flights observed, 2025-10-26 to 2025-12-01 · 137 mi
UA4439 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
58%
Median delay
+9 min
90th percentile
+143 min
Cancellation rate
8%
How often is UA4439 on time?
Across 36 flights on GRR → ORD from 2025-10-26 to 2025-12-01, UA4439 arrived within 15 minutes of schedule 58% of the time. The median arrival delay was +9 min, and the worst 10% of flights arrived +143 min or later. 8% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 19 | 58% |
| 16-30 min | 4 | 12% |
| 31-60 min | 2 | 6% |
| 61-120 min | 4 | 12% |
| 2+ hrs | 4 | 12% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 67% | +17 min |
| 2025-11 | 27 | 56% | +77 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | 5 | 80% |
| Wed | 5 | 60% |
| Thu | 4 | 50% |
| Fri | 5 | 40% |
| Sat | 4 | 50% |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…