DL479 BOS → LAX
Delta Air Lines · Boston, MA to Los Angeles, CA · 363 flights observed, 2025-07-01 to 2026-06-30 · 2,611 mi
On-time arrival
80%
Median delay
-4 min
90th percentile
+34 min
Cancellation rate
2%
How often is DL479 on time?
Across 363 flights on BOS → LAX from 2025-07-01 to 2026-06-30, DL479 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +34 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 | 286 | 80% |
| 16-30 min | 31 | 9% |
| 31-60 min | 17 | 5% |
| 61-120 min | 12 | 3% |
| 2+ hrs | 10 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 87% | 0 min |
| 2025-08 | 31 | 94% | +13 min |
| 2025-09 | 30 | 93% | -9 min |
| 2025-10 | 30 | 77% | +5 min |
| 2025-11 | 29 | 90% | -3 min |
| 2025-12 | 31 | 71% | +14 min |
| 2026-01 | 29 | 62% | +23 min |
| 2026-02 | 26 | 62% | +19 min |
| 2026-03 | 31 | 87% | +0 min |
| 2026-04 | 27 | 74% | +9 min |
| 2026-05 | 31 | 87% | -3 min |
| 2026-06 | 30 | 77% | +7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 48 | 77% |
| Tue | 51 | 88% |
| Wed | 52 | 73% |
| Thu | 52 | 77% |
| Fri | 52 | 77% |
| Sat | 49 | 80% |
| Sun | 52 | 90% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…