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 1431
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 1431 · MDW → HOU
departs 7:15 PM CT · arrives 9:50 PM CT
Forecast issued Fri 4:00 PM ET · 4h before departure
Watch this flight
Other days
Today
Sun 10/4 14%
Mon 10/5 24%
Odds over time
Arrive at HOU more than 15 minutes late?
38%
chance · ±0 pts
+4 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
38%
Leave 15+ late
30%
Arrive 1h+ late
4%
Cancelled
9%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at HOU more than 15 minutes late?
Calm-weather odds: 38% · changed +4 pts in 24h
+4 pts
38%
Yes 38%
No 62%
Leave MDW more than 15 minutes late?
Calm-weather odds: 39% · changed −8 pts in 24h
−8 pts
30%
Yes 30%
No 70%
Arrive at HOU more than an hour late?
Calm-weather odds: 9% · changed −5 pts in 24h
−5 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +8 pts in 24h
+8 pts
9%
Yes 9%
No 91%
How late will it get to HOU?
On time or early
57%
15–30 min late
14%
30 min–1 hour late
17%
1–2 hours late
1%
Over 2 hours late
2%
Cancelled
9%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into HOU at that hour are often late
↑
WN's recent on-time record
↓
Mostly benign weather forecast at MDW
↓
Fridays in October are usually quieter than average
Weather at each end
MDW (origin)
Gusts 15 kt Ceiling 1,500 ft Visibility 7 mi Precip 0.12 in
HOU (destination)
Gusts 11 kt Ceiling 1,800 ft Visibility 1.25 mi Precip 0.47 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.