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 1660SCHEDULED · TYPICAL SCHEDULE
UA 1660 · ORD → SEA
departs 1:30 PM CT · arrives 4:09 PM PT
Forecast issued Sun 12:00 AM ET · 62h before departure
Odds over time
Arrive at SEA more than 15 minutes late?
15%chance · ±1 pts– · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to SEA?
On time or early
85%
15–30 min late
7%
30 min–1 hour late
4%
1–2 hours late
2%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.