Schedule: the flights that flew on Wednesday, Sep 30, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4173
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 7
WN 4173 · LAX → STL
departs 6:54 AM PT · arrives 12:25 PM CT
Forecast issued Sun 5:00 PM ET · 65h before departure
Watch this flight
Other days
Tue 10/6 4%
Wed 10/7
Odds over time
Arrive at STL more than 15 minutes late?
5%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
5%
Leave 15+ late
5%
Arrive 1h+ late
1%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.7d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 5% · changed −1 pt in 24h
−1 pt
5%
Yes 5%
No 95%
Leave LAX more than 15 minutes late?
Calm-weather odds: 5% · changed −1 pt in 24h
−1 pt
5%
Yes 5%
No 95%
Arrive at STL more than an hour late?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to STL?
On time or early
94%
15–30 min late
3%
30 min–1 hour late
<1%
1–2 hours late
<1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Other factors
↑
This flight has been late 23% of the time recently
↓
Early flights usually leave on time
↓
WN's recent on-time record
Weather at each end
LAX (origin)
Gusts 11 kt Ceiling 5,133 ft Visibility 2 mi Precip none
STL (destination)
Gusts 9 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.