Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4042
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
WN 4042 · SRQ → STL
departs 8:10 AM ET · arrives 9:35 AM CT
Forecast issued Fri 1:00 PM ET · 19h before departure
Watch this flight
Odds over time
Arrive at STL more than 15 minutes late?
6%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
6%
Leave 15+ late
5%
Arrive 1h+ late
1%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.4d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Leave SRQ more than 15 minutes late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
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 99%
How late will it get to STL?
On time or early
93%
15–30 min late
3%
30 min–1 hour late
2%
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
↑
0.3 in of rain, thunderstorms forecast at SRQ that day
↑
Other factors
↓
8am departures from SRQ are usually not late
↓
Early flights usually leave on time
Weather at each end
SRQ (origin)
Gusts 16 kt Ceiling 7,000 ft Visibility 10+ mi Precip 0.26 in
STL (destination)
Gusts 10 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.