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 1223
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
WN 1223 · HOU → ATL
departs 5:15 PM CT · arrives 8:20 PM ET
Forecast issued Sat 2:00 PM ET · 28h before departure
Watch this flight
Odds over time
Arrive at ATL more than 15 minutes late?
58%
chance · ±6 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
58%
Leave 15+ late
43%
Arrive 1h+ late
13%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
5.8d
2d
Now
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 23% · changed −1 pt in 24h
−1 pt
58%
Yes 58%
No 42%
Leave HOU more than 15 minutes late?
Calm-weather odds: 32% · changed −5 pts in 24h
−5 pts
43%
Yes 43%
No 57%
Arrive at ATL more than an hour late?
Calm-weather odds: 4% · changed −4 pts in 24h
−4 pts
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to ATL?
On time or early
42%
15–30 min late
25%
30 min–1 hour late
20%
1–2 hours late
9%
Over 2 hours late
4%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 600 ft forecast at HOU that day
↑
Cloud base down to 300 ft, visibility down to 2 mi, 1.2 in of rain forecast at ATL that day
↑
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
HOU (origin)
Gusts 19 kt Ceiling 600 ft Visibility 3 mi Precip 0.19 in
ATL (destination)
Gusts 9 kt Ceiling 300 ft Visibility 2 mi Precip 1.17 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.