Schedule: a typical summer Sunday (the flights of Jul 26, 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
Sunday, October 4
WN 3556 · SAT → ATL
departs 12:05 PM CT · arrives 3:30 PM ET
Forecast issued Fri 9:00 PM ET · 40h before departure
Watch this flight
Other days
Today 30%
Sun 10/4
Mon 10/5 19%
Odds over time
Arrive at ATL more than 15 minutes late?
26%
chance · ±5 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
26%
Leave 15+ late
30%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.6d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
26%
Yes 26%
No 74%
Leave SAT more than 15 minutes late?
Calm-weather odds: 16% · changed −1 pt in 24h
−1 pt
30%
Yes 30%
No 70%
Arrive at ATL more than an hour late?
Calm-weather odds: 2% · changed −1 pt in 24h
−1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to ATL?
On time or early
73%
15–30 min late
11%
30 min–1 hour late
9%
1–2 hours late
4%
Over 2 hours late
2%
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 1 mi, 2.0 in of rain forecast at ATL that day
↑
This flight has been late 34% of the time recently
↑
Arrivals into ATL at that hour are often late
↓
ATL usually runs smoothly
↓
Sundays in October are usually quieter than average
Weather at each end
SAT (origin)
Gusts 26 kt Ceiling 900 ft Visibility 10+ mi Precip none
ATL (destination)
Gusts 9 kt Ceiling 300 ft Visibility 1 mi Precip 1.38 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.