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 4143
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 4143 · AUS → LAS
departs 3:50 PM CT · arrives 4:40 PM PT
Forecast issued Tue 6:00 PM ET · 47h before departure
Watch this flight
Other days
Today 52%
Wed 9/30 37%
Thu 10/1
Fri 10/2 28%
Sun 10/4 27%
Mon 10/5 22%
Odds over time
Arrive at LAS more than 15 minutes late?
46%
chance · ±5 pts
−4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
46%
Leave 15+ late
50%
Arrive 1h+ late
15%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.9d
Now
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 25% · changed −4 pts in 24h
−4 pts
46%
Yes 46%
No 54%
Leave AUS more than 15 minutes late?
Calm-weather odds: 34% · changed −5 pts in 24h
−5 pts
50%
Yes 50%
No 50%
Arrive at LAS more than an hour late?
Calm-weather odds: 7% · changed −1 pt in 24h
−1 pt
15%
Yes 15%
No 85%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
<1%
Yes <1%
No 99%
How late will it get to LAS?
On time or early
53%
15–30 min late
2%
30 min–1 hour late
28%
1–2 hours late
10%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,300 ft, 1.0 in of rain forecast at AUS that day
↑
3pm departures from AUS are often late
↑
This flight has been late 50% of the time recently
↓
Mostly benign weather forecast at LAS
↓
Thursdays in October are usually quieter than average
Weather at each end
AUS (origin)
Gusts 20 kt Ceiling 1,300 ft Visibility 3.66667 mi Precip 1.00 in
LAS (destination)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
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.