Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3353
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 3353 · PHX → STL
departs 4:40 PM MT · arrives 9:35 PM CT
Forecast issued Fri 10:00 PM ET · 2h after departure
Watch this flight
Other days
Fri 10/2
Mon 10/5 28%
Fri 10/9 37%
Odds over time
Arrive at STL more than 15 minutes late?
41%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
41%
Leave 15+ late
50%
Arrive 1h+ late
10%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.9d
2d
1d
12h
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 38% · changed +0 pts in 24h
+0 pts
41%
Yes 41%
No 59%
Leave PHX more than 15 minutes late?
Calm-weather odds: 50% · changed +3 pts in 24h
+3 pts
50%
Yes 50%
No 50%
Arrive at STL more than an hour late?
Calm-weather odds: 9% · changed +1 pt in 24h
+1 pt
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to STL?
On time or early
58%
15–30 min late
15%
30 min–1 hour late
16%
1–2 hours late
7%
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
↑
4pm departures from PHX are often late
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↓
Mostly benign weather forecast at PHX
↓
Fridays in October are usually quieter than average
Weather at each end
PHX (origin)
Gusts 22 kt Ceiling none (clear) Visibility 10+ mi Precip none
STL (destination)
Gusts 20 kt Ceiling 600 ft Visibility 9 mi Precip 0.01 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.