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.

ICELANDAIR · FLIGHT FI 645 LANDED 7:12 PM ET, ~11 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

FI 645 · KEF → IAD

took off 5:05 PM GMT · landed 7:12 PM ET (scheduled time unknown)
Forecast issued Mon 7:00 PM ET · 6h after departure

Odds over time

Arrive at IAD more than 15 minutes late?
21% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 10% 20% 30% 40% 1h Departs Lands