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 721SCHEDULED · TYPICAL SCHEDULE
DL 721 · SNA → ATL
departs 6:45 AM PT · arrives 2:19 PM ET
Forecast issued Thu 6:00 PM ET · 40h before departure
Odds over time
Arrive at ATL more than 15 minutes late?
19%chance · ±3 pts+0 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to ATL?
On time or early
81%
15–30 min late
10%
30 min–1 hour late
4%
1–2 hours late
2%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.