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 4878 LANDED 8:42 AM CT, ~2 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, September 29

WN 4878 · CLT → MDW

took off 8:20 AM ET · landed 8:42 AM CT (scheduled time unknown)

Forecast issued Tue 10:00 PM ET · 14h after departure

Arrive at MDW more than 15 minutes late?

14% chance · ±0 pts – · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

What’s moving the odds

↑ Other factors

↑ CLT is prone to delays

↑ CLT is busy at that time

↓ Mostly benign weather forecast at CLT

↓ Early flights usually leave on time

Weather at each end

CLT (origin) Gusts11 kt Ceiling5,000 ft Visibility9 mi Precipnone

MDW (destination) Gusts15 kt Ceilingnone (clear) Visibility10+ mi Precipnone

How this resolves

Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.

Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.

WN 4878 · CLT → MDW

Odds over time