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 3988 LANDED 7:29 PM ET, ON TIME · SCHEDULED TIME UNKNOWN

Tuesday, September 29 Yesterday

WN 3988 · BWI → ATL

took off 6:08 PM ET · landed 7:29 PM ET (scheduled time unknown)

Forecast issued Tue 10:00 PM ET · 4h after departure

Arrive at ATL more than 15 minutes late?

26% chance · ±0 pts +4 pts · 24h

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

What’s moving the odds

↑ 6pm departures from BWI are often late

↑ Other factors

↑ Arrivals into ATL at that hour are often late

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at ATL

Weather at each end

BWI (origin) Gusts7 kt Ceiling3,600 ft Visibility9.2 mi Precipnone

ATL (destination) Gusts9 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 3988 · BWI → ATL

Odds over time