Flight OddsAA4628 BOS → ORD
American Airlines · Boston, MA to Chicago, IL · 29 flights observed, 2026-02-15 to 2026-04-06 · 867 mi
AA4628 covers more than one route in the data window — the stats below are for BOS → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
-4 min
90th percentile
+94 min
Cancellation rate
17%
How often is AA4628 on time?
Across 29 flights on BOS → ORD from 2026-02-15 to 2026-04-06, AA4628 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +94 min or later. 17% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 17 | 74% |
| 16-30 min | 1 | 4% |
| 31-60 min | 1 | 4% |
| 61-120 min | 3 | 13% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 1 | 100% | 0 min |
| 2026-03 | 18 | 78% | +20 min |
| 2026-04 | 4 | 50% | +13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 75% |
| Tue | 3 | 67% |
| Wed | 4 | 50% |
| Thu | 2 | 100% |
| Fri | 4 | 75% |
| Sat | No data | — |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…