Flight OddsAA840 DCA → BOS
American Airlines · Washington, DC to Boston, MA · 7 flights observed, 2025-12-18 to 2026-01-04 · 399 mi
AA840 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
71%
Median delay
-4 min
90th percentile
+69 min
Cancellation rate
0%
How often is AA840 on time?
Across 7 flights on DCA → BOS from 2025-12-18 to 2026-01-04, AA840 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +69 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 | 5 | 71% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 14% |
| 61-120 min | 1 | 14% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 6 | 83% | +4 min |
| 2026-01 | 1 | 0% | +110 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 1 | 100% |
| Tue | 1 | 100% |
| Wed | No data | — |
| Thu | 1 | 100% |
| Fri | 1 | 0% |
| Sat | No data | — |
| Sun | 3 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…