Flight OddsAA4020 BOS → SDF
American Airlines · Boston, MA to Louisville, KY · 6 flights observed, 2026-04-12 to 2026-05-17 · 829 mi
AA4020 covers more than one route in the data window — the stats below are for BOS → SDF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-2 min
90th percentile
+20 min
Cancellation rate
0%
How often is AA4020 on time?
Across 6 flights on BOS → SDF from 2026-04-12 to 2026-05-17, AA4020 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +20 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 5 | 83% |
| 16-30 min | 1 | 17% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 3 | 67% | +6 min |
| 2026-05 | 3 | 100% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| 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…