Flight OddsAA4505 BOS → DCA
American Airlines · Boston, MA to Washington, DC · 62 flights observed, 2025-07-05 to 2026-06-30 · 399 mi
AA4505 covers more than one route in the data window — the stats below are for BOS → DCA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
92%
Median delay
-15 min
90th percentile
+11 min
Cancellation rate
0%
How often is AA4505 on time?
Across 62 flights on BOS → DCA from 2025-07-05 to 2026-06-30, AA4505 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +11 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 | 57 | 92% |
| 16-30 min | 3 | 5% |
| 31-60 min | 2 | 3% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 24 | 100% | -24 min |
| 2025-08 | 4 | 75% | -10 min |
| 2026-05 | 8 | 100% | -2 min |
| 2026-06 | 26 | 85% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 11 | 91% |
| Tue | 11 | 100% |
| Wed | 9 | 100% |
| Thu | 10 | 90% |
| Fri | 10 | 90% |
| Sat | 1 | 100% |
| Sun | 10 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…