Flight OddsAA4643 DCA → BOS
American Airlines · Washington, DC to Boston, MA · 4 flights observed, 2025-07-01 to 2025-07-04 · 399 mi
AA4643 covers more than one route in the data window — the stats below are for DCA → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
100%
Median delay
-5 min
90th percentile
-5 min
Cancellation rate
25%
How often is AA4643 on time?
Across 4 flights on DCA → BOS from 2025-07-01 to 2025-07-04, AA4643 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived -5 min or later. 25% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 3 | 100% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 3 | 100% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | 1 | 100% |
| Thu | 1 | 100% |
| Fri | 1 | 100% |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…