Flight OddsAA1421 BOS → DCA
American Airlines · Boston, MA to Washington, DC · 60 flights observed, 2025-07-01 to 2025-10-05 · 399 mi
AA1421 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
52%
Median delay
+15 min
90th percentile
+115 min
Cancellation rate
8%
How often is AA1421 on time?
Across 60 flights on BOS → DCA from 2025-07-01 to 2025-10-05, AA1421 arrived within 15 minutes of schedule 52% of the time. The median arrival delay was +15 min, and the worst 10% of flights arrived +115 min or later. 8% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 28 | 52% |
| 16-30 min | 6 | 11% |
| 31-60 min | 8 | 15% |
| 61-120 min | 6 | 11% |
| 2+ hrs | 6 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 2 | 50% | +41 min |
| 2025-08 | 19 | 84% | +3 min |
| 2025-09 | 28 | 29% | +78 min |
| 2025-10 | 5 | 60% | +8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 50% |
| Tue | 8 | 75% |
| Wed | 8 | 63% |
| Thu | 8 | 38% |
| Fri | 9 | 33% |
| Sat | 5 | 80% |
| Sun | 8 | 38% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…