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.
UNITED · FLIGHT UA 678SCHEDULED · TYPICAL SCHEDULE
UA 678 · MFE → IAH
departs 7:00 AM CT · arrives 8:19 AM CT
Forecast issued Thu 3:00 AM ET · 53h before departure
Odds over time
Arrive at IAH more than 15 minutes late?
20%chance · ±1 pts– · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to IAH?
On time or early
79%
15–30 min late
10%
30 min–1 hour late
3%
1–2 hours late
1%
Over 2 hours late
5%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.