Flight OddsAA4205 SDF → BOS
American Airlines · Louisville, KY to Boston, MA · 20 flights observed, 2026-02-12 to 2026-03-06 · 829 mi
AA4205 covers more than one route in the data window — the stats below are for SDF → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
89%
Median delay
-9 min
90th percentile
+16 min
Cancellation rate
5%
How often is AA4205 on time?
Across 20 flights on SDF → BOS from 2026-02-12 to 2026-03-06, AA4205 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +16 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 | 17 | 89% |
| 16-30 min | 2 | 11% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 13 | 85% | -7 min |
| 2026-03 | 6 | 100% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 2 | 100% |
| Tue | 3 | 100% |
| Wed | 3 | 67% |
| Thu | 4 | 100% |
| Fri | 4 | 100% |
| Sat | No data | — |
| Sun | 3 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…