Flight OddsDL5821 BWI → BOS
Delta Air Lines · Baltimore, MD to Boston, MA · 4 flights observed, 2025-12-25 to 2026-01-02 · 369 mi
DL5821 covers more than one route in the data window — the stats below are for BWI → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+21 min
90th percentile
+53 min
Cancellation rate
0%
How often is DL5821 on time?
Across 4 flights on BWI → BOS from 2025-12-25 to 2026-01-02, DL5821 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +21 min, and the worst 10% of flights arrived +53 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 | 2 | 50% |
| 16-30 min | 0 | 0% |
| 31-60 min | 2 | 50% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 2 | 100% | -5 min |
| 2026-01 | 2 | 0% | +51 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 2 | 50% |
| Fri | 2 | 50% |
| Sat | No data | — |
| 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…