Flight OddsDL4959 JAX → JFK
Delta Air Lines · Jacksonville, FL to New York, NY · 349 flights observed, 2025-07-01 to 2026-06-30 · 829 mi
DL4959 covers more than one route in the data window — the stats below are for JAX → JFK, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
92%
Median delay
-14 min
90th percentile
+11 min
Cancellation rate
4%
How often is DL4959 on time?
Across 349 flights on JAX → JFK from 2025-07-01 to 2026-06-30, DL4959 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived +11 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 | 305 | 92% |
| 16-30 min | 9 | 3% |
| 31-60 min | 7 | 2% |
| 61-120 min | 3 | 1% |
| 2+ hrs | 9 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 26 | 100% | -7 min |
| 2025-08 | 30 | 93% | -5 min |
| 2025-09 | 30 | 90% | +1 min |
| 2025-10 | 31 | 94% | 0 min |
| 2025-11 | 29 | 93% | 0 min |
| 2025-12 | 19 | 89% | -2 min |
| 2026-01 | 22 | 86% | -7 min |
| 2026-02 | 26 | 77% | +15 min |
| 2026-03 | 30 | 93% | -9 min |
| 2026-04 | 30 | 93% | -3 min |
| 2026-05 | 30 | 93% | -14 min |
| 2026-06 | 30 | 93% | -7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 47 | 87% |
| Tue | 49 | 88% |
| Wed | 48 | 100% |
| Thu | 47 | 91% |
| Fri | 48 | 94% |
| Sat | 49 | 92% |
| Sun | 45 | 89% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…