Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 644SCHEDULED · TYPICAL SCHEDULE
Tomorrow
DL 644 · IAH → ATL
departs 8:05 AM CT · arrives 11:10 AM ET
Forecast issued Wed 3:00 PM ET · 18h before departure
Odds over time
Arrive at ATL more than 15 minutes late?
15%chance · ±0 pts+6 pts · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to ATL?
On time or early
85%
15–30 min late
2%
30 min–1 hour late
7%
1–2 hours late
4%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.