Flight OddsDL5857 BOS → DCA
Delta Air Lines · Boston, MA to Washington, DC · 129 flights observed, 2025-12-20 to 2026-06-30 · 399 mi
DL5857 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
76%
Median delay
-3 min
90th percentile
+43 min
Cancellation rate
2%
How often is DL5857 on time?
Across 129 flights on BOS → DCA from 2025-12-20 to 2026-06-30, DL5857 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +43 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 96 | 76% |
| 16-30 min | 15 | 12% |
| 31-60 min | 9 | 7% |
| 61-120 min | 6 | 5% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 9 | 89% | +1 min |
| 2026-01 | 27 | 74% | +10 min |
| 2026-02 | 14 | 79% | +12 min |
| 2026-03 | 1 | 0% | +17 min |
| 2026-04 | 18 | 67% | -2 min |
| 2026-05 | 31 | 77% | +3 min |
| 2026-06 | 27 | 78% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 19 | 74% |
| Tue | 20 | 65% |
| Wed | 17 | 71% |
| Thu | 16 | 75% |
| Fri | 18 | 72% |
| Sat | 20 | 90% |
| Sun | 17 | 82% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…