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 1256
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
WN 1256 · DAL → CHS
departs 3:20 PM CT · arrives 6:50 PM ET
Forecast issued Thu 11:00 PM ET · 41h before departure
Watch this flight
Other days
Sat 10/3
Tue 10/6 23%
Wed 10/7 23%
Odds over time
Arrive at CHS more than 15 minutes late?
46%
chance · ±6 pts
+9 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
46%
Leave 15+ late
55%
Arrive 1h+ late
12%
Cancelled
3%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at CHS more than 15 minutes late?
Calm-weather odds: 23% · changed +9 pts in 24h
+9 pts
46%
Yes 46%
No 54%
Leave DAL more than 15 minutes late?
Calm-weather odds: 25% · changed +9 pts in 24h
+9 pts
55%
Yes 55%
No 45%
Arrive at CHS more than an hour late?
Calm-weather odds: 5% · changed +3 pts in 24h
+3 pts
12%
Yes 12%
No 88%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
3%
Yes 3%
No 97%
How late will it get to CHS?
On time or early
53%
15–30 min late
20%
30 min–1 hour late
13%
1–2 hours late
7%
Over 2 hours late
5%
Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 400 ft, 0.5 in of rain forecast at DAL that day
↑
3pm departures from DAL are often late
↑
DAL is prone to delays
↓
DAL is quiet at that time
↓
CHS usually runs smoothly
Weather at each end
DAL (origin)
Gusts 14 kt Ceiling 400 ft Visibility 3 mi Precip 0.48 in
CHS (destination)
Gusts 9 kt Ceiling 4,500 ft Visibility 6 mi Precip 0.16 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.