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 3968
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
WN 3968 · STL → PHX
departs 1:20 PM CT · arrives 2:30 PM MT
Forecast issued Wed 6:00 AM ET · 32h before departure
Watch this flight
Other days
Thu 10/1
Fri 10/2 26%
Sat 10/3 8%
Sun 10/4 18%
Mon 10/5 19%
Odds over time
Arrive at PHX more than 15 minutes late?
26%
chance · ±3 pts
−4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
26%
Leave 15+ late
32%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at PHX more than 15 minutes late?
Calm-weather odds: 16% · changed −4 pts in 24h
−4 pts
26%
Yes 26%
No 74%
Leave STL more than 15 minutes late?
Calm-weather odds: 25% · changed +1 pt in 24h
+1 pt
32%
Yes 32%
No 68%
Arrive at PHX more than an hour late?
Calm-weather odds: 4% · changed −1 pt in 24h
−1 pt
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to PHX?
On time or early
74%
15–30 min late
11%
30 min–1 hour late
10%
1–2 hours late
4%
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
↑
Cloud base down to 600 ft, 0.3 in of rain forecast at STL that day
↑
This flight has been late 35% of the time recently
↑
PHX is prone to delays
↓
Mostly benign weather forecast at PHX
↓
STL usually runs smoothly
Weather at each end
STL (origin)
Gusts 16 kt Ceiling 600 ft Visibility 3 mi Precip 0.26 in
PHX (destination)
Gusts 5 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.