Flight OddsUA1866 GRR → ORD
United Airlines · Grand Rapids, MI to Chicago, IL · 24 flights observed, 2026-06-01 to 2026-06-24 · 137 mi
UA1866 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
43%
Median delay
+20 min
90th percentile
+190 min
Cancellation rate
4%
How often is UA1866 on time?
Across 24 flights on GRR → ORD from 2026-06-01 to 2026-06-24, UA1866 arrived within 15 minutes of schedule 43% of the time. The median arrival delay was +20 min, and the worst 10% of flights arrived +190 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 | 10 | 43% |
| 16-30 min | 6 | 26% |
| 31-60 min | 1 | 4% |
| 61-120 min | 2 | 9% |
| 2+ hrs | 4 | 17% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-06 | 23 | 43% | +51 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 4 | 25% |
| Wed | 4 | 50% |
| Thu | 2 | 0% |
| Fri | 3 | 33% |
| Sat | 3 | 100% |
| 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…