DL519 ATL → DEN
Delta Air Lines · Atlanta, GA to Denver, CO · 365 flights observed, 2025-07-01 to 2026-06-30 · 1,199 mi
DL519 covers more than one route in the data window — the stats below are for ATL → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
66%
Median delay
+4 min
90th percentile
+61 min
Cancellation rate
1%
How often is DL519 on time?
Across 365 flights on ATL → DEN from 2025-07-01 to 2026-06-30, DL519 arrived within 15 minutes of schedule 66% of the time. The median arrival delay was +4 min, and the worst 10% of flights arrived +61 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 | 236 | 66% |
| 16-30 min | 41 | 11% |
| 31-60 min | 45 | 13% |
| 61-120 min | 29 | 8% |
| 2+ hrs | 7 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 28% | +48 min |
| 2025-08 | 30 | 53% | +30 min |
| 2025-09 | 30 | 77% | +9 min |
| 2025-10 | 30 | 73% | +5 min |
| 2025-11 | 30 | 70% | +11 min |
| 2025-12 | 31 | 52% | +29 min |
| 2026-01 | 30 | 83% | +6 min |
| 2026-02 | 28 | 79% | +4 min |
| 2026-03 | 29 | 76% | +5 min |
| 2026-04 | 30 | 73% | +2 min |
| 2026-05 | 31 | 65% | +12 min |
| 2026-06 | 30 | 63% | +13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 55% |
| Tue | 50 | 68% |
| Wed | 52 | 73% |
| Thu | 52 | 67% |
| Fri | 52 | 75% |
| Sat | 50 | 64% |
| Sun | 51 | 59% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…