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 868 SCHEDULED · SCHEDULED TIME UNKNOWN
Tomorrow

UA 868 · NRT → ORD

departs 1:27 AM JST · arrives 10:46 PM CT
Your aircraft is N20904 (B788), coming in as UA 867 from ORD: landed 2:40 PM JST.
Forecast issued Wed 4:00 AM ET · 8h before departure

Odds over time

Arrive at ORD more than 15 minutes late?
15% chance · ±0 pts – · 24h
HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.
WEATHER FORECASTS LIVE IN THE AIR 0% 5% 10% 15% 20% 11h Now 6h Departs Lands