Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 939SCHEDULED · TYPICAL SCHEDULE
DL 939 · LAX → JFK
departs 11:30 AM PT · arrives 8:10 PM ET
Forecast issued Thu 6:00 PM ET · 44h before departure
Odds over time
Arrive at JFK more than 15 minutes late?
17%chance · ±1 pts−2 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to JFK?
On time or early
82%
15–30 min late
7%
30 min–1 hour late
4%
1–2 hours late
3%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.