Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3354
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 3354 · PHX → STL
departs 8:55 PM MT · arrives 1:55 AM CT
Forecast issued Thu 10:00 PM ET · 2h before departure
Watch this flight
Other days
Thu 10/1
Mon 10/5 23%
Fri 10/9 32%
Odds over time
Arrive at STL more than 15 minutes late?
62%
chance · ±0 pts
+29 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
62%
Leave 15+ late
70%
Arrive 1h+ late
19%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 30% · changed +29 pts in 24h
+29 pts
62%
Yes 62%
No 38%
Leave PHX more than 15 minutes late?
Calm-weather odds: 50% · changed +20 pts in 24h
+20 pts
70%
Yes 70%
No 30%
Arrive at STL more than an hour late?
Calm-weather odds: 7% · changed +9 pts in 24h
+9 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to STL?
On time or early
37%
15–30 min late
34%
30 min–1 hour late
8%
1–2 hours late
17%
Over 2 hours late
2%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 25 kt forecast at STL that day
↑
8pm departures from PHX are often late
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at PHX
↓
STL usually runs smoothly
Weather at each end
PHX (origin)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
STL (destination)
Gusts 25 kt Ceiling 2,420 ft Visibility 4.4 mi Precip 0.12 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.