Schedule: the flights that flew on Tuesday, Sep 29, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
UNITED · FLIGHT UA 4SCHEDULED · TYPICAL SCHEDULE
UA 4 · LHR → IAH
departs 5:17 PM BST · arrives 9:07 PM CT
Forecast issued Sun 7:00 AM ET · 53h before departure
Odds over time
Arrive at IAH more than 15 minutes late?
10%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
87%
15–30 min late
<1%
30 min–1 hour late
4%
1–2 hours late
3%
Over 2 hours late
2%
Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.