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.

DELTA · FLIGHT DL 1205 LANDED 8:08 PM PT, ~19 MIN LATE · SCHEDULED TIME UNKNOWN

DL 1205 · ORD → SEA

took off 5:54 PM CT · landed 8:08 PM PT (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 3h after departure

Odds over time

Arrive at SEA more than 15 minutes late?
40% chance · ±2 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 15% 30% 45% 60% 1h Departs Lands