Flight OddsAA1421 DCA → BOS
American Airlines · Washington, DC to Boston, MA · 61 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 DCA → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
61%
Median delay
+7 min
90th percentile
+95 min
Cancellation rate
8%
How often is AA1421 on time?
Across 61 flights on DCA → BOS from 2025-07-01 to 2025-10-05, AA1421 arrived within 15 minutes of schedule 61% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +95 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 | 34 | 61% |
| 16-30 min | 7 | 13% |
| 31-60 min | 4 | 7% |
| 61-120 min | 7 | 13% |
| 2+ hrs | 4 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 3 | 67% | +12 min |
| 2025-08 | 20 | 90% | -7 min |
| 2025-09 | 28 | 36% | +49 min |
| 2025-10 | 5 | 80% | -5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 63% |
| Tue | 8 | 63% |
| Wed | 8 | 75% |
| Thu | 8 | 50% |
| Fri | 10 | 40% |
| Sat | 5 | 80% |
| Sun | 9 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…