Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3633
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3633 · SFO → AUS
departs 12:15 PM PT · arrives 5:55 PM CT
Forecast issued Wed 5:00 PM ET · 2h after departure
Watch this flight
Other days
Today
Thu 10/1 68%
Fri 10/2 39%
Mon 10/5 31%
Tue 10/6 23%
Odds over time
Arrive at AUS more than 15 minutes late?
39%
chance · ±1 pts
−7 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
39%
Leave 15+ late
39%
Arrive 1h+ late
7%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
12h
6h
Departs
Now
Lands
Arrive at AUS more than 15 minutes late?
Calm-weather odds: 37% · changed −7 pts in 24h
−7 pts
39%
Yes 39%
No 61%
Leave SFO more than 15 minutes late?
Calm-weather odds: 39% · changed −10 pts in 24h
−10 pts
39%
Yes 39%
No 61%
Arrive at AUS more than an hour late?
Calm-weather odds: 8% · changed −3 pts in 24h
−3 pts
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to AUS?
On time or early
61%
15–30 min late
20%
30 min–1 hour late
12%
1–2 hours late
5%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 52% of the time recently
↑
12pm departures from SFO are often late
↑
Arrivals into AUS at that hour are often late
↓
Mostly benign weather forecast at SFO
↓
Wednesdays in September are usually quieter than average
Weather at each end
SFO (origin)
Gusts 8 kt Ceiling none (clear) Visibility 10+ mi Precip none
AUS (destination)
Gusts 21 kt Ceiling 1,100 ft Visibility 6 mi Precip 0.14 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.