Flight OddsDL384 BOS → SEA
Delta Air Lines · Boston, MA to Seattle, WA · 365 flights observed, 2025-07-01 to 2026-06-30 · 2,496 mi
On-time arrival
76%
Median delay
+2 min
90th percentile
+30 min
Cancellation rate
2%
How often is DL384 on time?
Across 365 flights on BOS → SEA from 2025-07-01 to 2026-06-30, DL384 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +30 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 | 270 | 76% |
| 16-30 min | 54 | 15% |
| 31-60 min | 21 | 6% |
| 61-120 min | 9 | 3% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 79% | +4 min |
| 2025-08 | 31 | 97% | -10 min |
| 2025-09 | 30 | 87% | -2 min |
| 2025-10 | 31 | 81% | -9 min |
| 2025-11 | 30 | 83% | +2 min |
| 2025-12 | 30 | 67% | +17 min |
| 2026-01 | 30 | 67% | +9 min |
| 2026-02 | 26 | 69% | +2 min |
| 2026-03 | 30 | 37% | +22 min |
| 2026-04 | 30 | 83% | -4 min |
| 2026-05 | 31 | 84% | +2 min |
| 2026-06 | 29 | 72% | +20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 49 | 78% |
| Tue | 51 | 69% |
| Wed | 51 | 78% |
| Thu | 52 | 69% |
| Fri | 51 | 78% |
| Sat | 51 | 76% |
| Sun | 52 | 81% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…