Flight OddsAA1556 DCA → BOS
American Airlines · Washington, DC to Boston, MA · 27 flights observed, 2026-05-21 to 2026-06-30 · 399 mi
AA1556 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
96%
Median delay
-15 min
90th percentile
-1 min
Cancellation rate
4%
How often is AA1556 on time?
Across 27 flights on DCA → BOS from 2026-05-21 to 2026-06-30, AA1556 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived -1 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 25 | 96% |
| 16-30 min | 1 | 4% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 4 | 75% | -9 min |
| 2026-06 | 22 | 100% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 100% |
| Tue | 4 | 100% |
| Wed | 3 | 100% |
| Thu | 5 | 100% |
| Fri | 4 | 100% |
| Sat | 6 | 83% |
| 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…