Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 240
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
WN 240 · ATL → STL
departs 1:10 PM ET · arrives 1:50 PM CT
Forecast issued Fri 9:00 PM ET · 64h before departure
Watch this flight
Other days
Today 22%
Sun 10/4 31%
Mon 10/5
Thu 10/8 4%
Odds over time
Arrive at STL more than 15 minutes late?
20%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
20%
Leave 15+ late
27%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at STL more than 15 minutes late?
Calm-weather odds: 15% · changed – in 24h
–
20%
Yes 20%
No 80%
Leave ATL more than 15 minutes late?
Calm-weather odds: 17% · changed – in 24h
–
27%
Yes 27%
No 73%
Arrive at STL more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to STL?
On time or early
79%
15–30 min late
12%
30 min–1 hour late
4%
1–2 hours late
2%
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
↑
Cloud base down to 300 ft, visibility down to 2 mi, 1.0 in of rain forecast at ATL that day
↑
WN's recent on-time record
↑
1pm departures from ATL are often late
↓
Mondays in October are usually quieter than average
↓
Mostly benign weather forecast at STL
Weather at each end
ATL (origin)
Gusts 14 kt Ceiling 300 ft Visibility 2 mi Precip 0.67 in
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.