Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4255
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Today
WN 4255 · AUS → HOU
departs 6:45 PM CT · arrives 7:45 PM CT
Forecast issued Thu 6:00 PM ET · 2h before departure
Watch this flight
Other days
Today
Fri 10/2 50%
Mon 10/5 26%
Tue 10/6 27%
Wed 10/7 26%
Odds over time
Arrive at HOU more than 15 minutes late?
81%
chance · ±0 pts
+5 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
81%
Leave 15+ late
81%
Arrive 1h+ late
44%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at HOU more than 15 minutes late?
Calm-weather odds: 64% · changed +5 pts in 24h
+5 pts
81%
Yes 81%
No 19%
Leave AUS more than 15 minutes late?
Calm-weather odds: 59% · changed +20 pts in 24h
+20 pts
81%
Yes 81%
No 19%
Arrive at HOU more than an hour late?
Calm-weather odds: 22% · changed +23 pts in 24h
+23 pts
44%
Yes 44%
No 56%
Cancelled?
Calm-weather odds: 2% · changed −5 pts in 24h
−5 pts
2%
Yes 2%
No 98%
How late will it get to HOU?
On time or early
18%
15–30 min late
23%
30 min–1 hour late
14%
1–2 hours late
33%
Over 2 hours late
9%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,233 ft, 2.6 in of rain, thunderstorms forecast at AUS that day
↑
6pm departures from AUS are often late
↑
Arrivals into HOU at that hour are often late
↓
Thursdays in October are usually quieter than average
↓
AUS usually runs smoothly
Weather at each end
AUS (origin)
Gusts 22 kt Ceiling 1,233 ft Visibility 3 mi Precip 2.21 in
HOU (destination)
Gusts 27 kt Ceiling 2,500 ft Visibility 1.75 mi Precip 0.72 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.