Tracked live by the FAA, but its flight plan was first seen after takeoff, so we don't know the scheduled time and can't say whether it's late.

UNITED · FLIGHT UA 1717 LANDED 6:55 PM CT, ~40 MIN LATE · SCHEDULED TIME UNKNOWN
Today

UA 1717 · STL → ORD

took off 6:03 PM CT · landed 6:55 PM CT (scheduled time unknown)
Forecast issued Sat 11:00 PM ET · 4h after departure

Odds over time

Arrive at ORD more than 15 minutes late?
46% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 25% 50% 75% 100% 9h 6h Departs Lands