Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
UNITED · FLIGHT UA 1660SCHEDULED · TYPICAL SCHEDULE
Today
UA 1660 · SEA → IAH
departs 5:00 PM PT · arrives 11:26 PM CT
Forecast issued Fri 4:00 AM ET · 16h before departure
Odds over time
Arrive at IAH more than 15 minutes late?
22%chance · ±1 pts+2 pts · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to IAH?
On time or early
78%
15–30 min late
11%
30 min–1 hour late
5%
1–2 hours late
3%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.