Flight OddsDL5818 DCA → BOS
Delta Air Lines · Washington, DC to Boston, MA · 152 flights observed, 2025-07-01 to 2025-12-19 · 399 mi
DL5818 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
74%
Median delay
-6 min
90th percentile
+57 min
Cancellation rate
4%
How often is DL5818 on time?
Across 152 flights on DCA → BOS from 2025-07-01 to 2025-12-19, DL5818 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +57 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 | 108 | 74% |
| 16-30 min | 9 | 6% |
| 31-60 min | 16 | 11% |
| 61-120 min | 8 | 5% |
| 2+ hrs | 5 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 25 | 72% | +15 min |
| 2025-08 | 26 | 88% | -8 min |
| 2025-09 | 24 | 54% | +18 min |
| 2025-10 | 26 | 65% | +19 min |
| 2025-11 | 26 | 88% | +6 min |
| 2025-12 | 19 | 74% | +7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 23 | 78% |
| Tue | 25 | 76% |
| Wed | 24 | 75% |
| Thu | 21 | 62% |
| Fri | 20 | 70% |
| Sat | 10 | 100% |
| Sun | 23 | 70% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…