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 4421 LANDED 4:31 PM ET, ~7 MIN LATE · SCHEDULED TIME UNKNOWN

Tuesday, September 29

WN 4421 · AUS → DCA

took off 12:36 PM CT · landed 4:31 PM ET (scheduled time unknown)

Forecast issued Tue 10:00 PM ET · 8h after departure

Arrive at DCA more than 15 minutes late?

23% chance · ±0 pts – · 24h

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

What’s moving the odds

↑ Arrivals into DCA at that hour are often late

↑ This flight has been late 22% of the time recently

↑ 12pm departures from AUS are often late

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at DCA

Weather at each end

AUS (origin) Gusts21 kt Ceiling1,300 ft Visibility10+ mi Precipnone

DCA (destination) Gusts7 kt Ceiling4,000 ft Visibility9.6 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 4421 · AUS → DCA

Odds over time