Flight OddsAA3645 ORD → GRR
American Airlines · Chicago, IL to Grand Rapids, MI · 22 flights observed, 2026-03-08 to 2026-04-06 · 137 mi
AA3645 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
76%
Median delay
-7 min
90th percentile
+70 min
Cancellation rate
5%
How often is AA3645 on time?
Across 22 flights on ORD → GRR from 2026-03-08 to 2026-04-06, AA3645 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +70 min or later. 5% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 16 | 76% |
| 16-30 min | 2 | 10% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 10% |
| 2+ hrs | 1 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 16 | 88% | +7 min |
| 2026-04 | 5 | 40% | +36 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 4 | 75% |
| Fri | 4 | 50% |
| Sat | 4 | 75% |
| Sun | 5 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…