Flight OddsDL4997 JFK → IAD
Delta Air Lines · New York, NY to Washington, DC · 16 flights observed, 2025-12-20 to 2026-01-04 · 228 mi
DL4997 covers more than one route in the data window — the stats below are for JFK → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
81%
Median delay
-7 min
90th percentile
+99 min
Cancellation rate
0%
How often is DL4997 on time?
Across 16 flights on JFK → IAD from 2025-12-20 to 2026-01-04, DL4997 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +99 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 13 | 81% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 6% |
| 2+ hrs | 2 | 13% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 12 | 75% | +24 min |
| 2026-01 | 4 | 100% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 2 | 50% |
| Tue | 2 | 100% |
| Wed | 2 | 100% |
| Thu | 2 | 100% |
| Fri | 2 | 100% |
| Sat | 3 | 33% |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…