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 3556
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 3556 · SAT → ATL
departs 3:40 PM CT · arrives 7:05 PM ET
Forecast issued Fri 10:00 AM ET · 7h before departure
Watch this flight
Other days
Today
Sun 10/4 33%
Mon 10/5 19%
Odds over time
Arrive at ATL more than 15 minutes late?
39%
chance · ±0 pts
+8 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
39%
Leave 15+ late
53%
Arrive 1h+ late
13%
Cancelled
5%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.8d
2d
1d
12h
Now
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 22% · changed +8 pts in 24h
+8 pts
39%
Yes 39%
No 61%
Leave SAT more than 15 minutes late?
Calm-weather odds: 37% · changed +15 pts in 24h
+15 pts
53%
Yes 53%
No 47%
Arrive at ATL more than an hour late?
Calm-weather odds: 6% · changed +4 pts in 24h
+4 pts
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: <1% · changed +4 pts in 24h
+4 pts
5%
Yes 5%
No 95%
How late will it get to ATL?
On time or early
58%
15–30 min late
15%
30 min–1 hour late
10%
1–2 hours late
10%
Over 2 hours late
2%
Cancelled
5%
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 SAT that day
↑
Arrivals into ATL at that hour are often late
↑
This flight has been late 34% of the time recently
↓
ATL usually runs smoothly
↓
SAT usually runs smoothly
Weather at each end
SAT (origin)
Gusts 16 kt Ceiling 200 ft Visibility 0.25 mi Precip 0.33 in
ATL (destination)
Gusts 8 kt Ceiling 600 ft Visibility 6 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.