Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1255
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
WN 1255 · MDW → DAL
departs 7:00 PM CT · arrives 9:15 PM CT
Forecast issued Thu 2:00 PM ET · 54h before departure
Watch this flight
Odds over time
Arrive at DAL more than 15 minutes late?
29%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
29%
Leave 15+ late
25%
Arrive 1h+ late
6%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.9d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at DAL more than 15 minutes late?
Calm-weather odds: 16% · changed – in 24h
–
29%
Yes 29%
No 71%
Leave MDW more than 15 minutes late?
Calm-weather odds: 19% · changed – in 24h
–
25%
Yes 25%
No 75%
Arrive at DAL more than an hour late?
Calm-weather odds: 3% · changed – in 24h
–
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
1%
Yes 1%
No 99%
How late will it get to DAL?
On time or early
70%
15–30 min late
15%
30 min–1 hour late
7%
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 500 ft, 0.4 in of rain forecast at DAL that day
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into DAL at that hour are often late
↓
Mostly benign weather forecast at MDW
↓
Saturdays in October are usually quieter than average
Weather at each end
MDW (origin)
Gusts 8 kt Ceiling none (clear) Visibility 10+ mi Precip none
DAL (destination)
Gusts 14 kt Ceiling 500 ft Visibility 4 mi Precip 0.36 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.