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 4538 IN THE AIR (OFF 3:58 PM CT, ETA 7:10 PM ET) · SCHEDULED TIME UNKNOWN

Tuesday, September 29 Today

WN 4538 · DAL → FLL

took off 3:58 PM CT · expected to land 7:10 PM ET (scheduled time unknown)

Forecast issued Tue 4:00 PM ET · 1h before departure

Arrive at FLL more than 15 minutes late?

41% chance · ±2 pts +8 pts · 24h

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

What’s moving the odds

↑ Other factors

↑ Arrivals into FLL at that hour are often late

↑ Later flights pick up delays from earlier in the day

↓ Tuesdays in September are usually quieter than average

↓ Mostly benign weather forecast at DAL

Weather at each end

DAL (origin) Gusts21 kt Ceilingnone (clear) Visibility10+ mi Precipnone

FLL (destination) Gusts26 kt Ceiling2,500 ft Visibility0.75 mi Precip2.19 in

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 4538 · DAL → FLL

Odds over time