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.

SOUTHWEST · FLIGHT WN 2826 LANDED 6:06 PM PT, ~28 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 2826 · MDW → SEA

took off 4:00 PM CT · landed 6:06 PM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 5h after departure

Odds over time

Arrive at SEA more than 15 minutes late?
46% chance · ±0 pts +5 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 1.1d 12h 6h Departs Lands