Flight OddsDL855 ATL → BOS
Delta Air Lines · Atlanta, GA to Boston, MA · 365 flights observed, 2025-07-01 to 2026-06-30 · 946 mi
On-time arrival
89%
Median delay
-8 min
90th percentile
+21 min
Cancellation rate
1%
How often is DL855 on time?
Across 365 flights on ATL → BOS from 2025-07-01 to 2026-06-30, DL855 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +21 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 319 | 89% |
| 16-30 min | 20 | 6% |
| 31-60 min | 12 | 3% |
| 61-120 min | 6 | 2% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 94% | -4 min |
| 2025-08 | 31 | 97% | -10 min |
| 2025-09 | 30 | 77% | +2 min |
| 2025-10 | 31 | 84% | +9 min |
| 2025-11 | 30 | 93% | -1 min |
| 2025-12 | 31 | 87% | -3 min |
| 2026-01 | 28 | 64% | +8 min |
| 2026-02 | 26 | 92% | -3 min |
| 2026-03 | 31 | 94% | -3 min |
| 2026-04 | 30 | 93% | -6 min |
| 2026-05 | 31 | 97% | -13 min |
| 2026-06 | 30 | 90% | -7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 50 | 84% |
| Tue | 52 | 83% |
| Wed | 52 | 88% |
| Thu | 52 | 94% |
| Fri | 52 | 92% |
| Sat | 51 | 92% |
| Sun | 51 | 86% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…