Schedule: a typical Sunday (the flights of Jul 26, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

SOUTHWEST · FLIGHT WN 1578 SCHEDULED · TYPICAL SCHEDULE

Sunday, October 4

WN 1578 · DAL → HOU

departs 8:00 AM CT · arrives 9:15 AM CT

Forecast issued Thu 9:00 PM ET · 60h before departure

Arrive at HOU more than 15 minutes late?

18% chance · ±3 pts – · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to HOU?

On time or early
79%
15–30 min late
4%
30 min–1 hour late
5%
1–2 hours late
7%
Over 2 hours late
1%
Cancelled
4%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ Cloud base down to 400 ft, 0.5 in of rain forecast at HOU that day

↑ HOU is prone to delays

↑ Cloud base down to 600 ft forecast at DAL that day

↓ Early flights usually leave on time

↓ Arrivals into HOU at that hour are usually not late

Weather at each end

DAL (origin) Gusts18 kt Ceiling600 ft Visibility7 mi Precip0.14 in

HOU (destination) Gusts19 kt Ceiling400 ft Visibility3 mi Precip0.73 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 1578 · DAL → HOU

Odds over time

How late will it get to HOU?