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 4388
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
WN 4388 · DAL → MDW
departs 4:05 PM CT · arrives 6:15 PM CT
Forecast issued Thu 2:00 PM ET · 51h before departure
Watch this flight
Odds over time
Arrive at MDW more than 15 minutes late?
28%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
54%
Arrive 1h+ late
7%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.8d
Now
1d
12h
6h
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 20% · changed – in 24h
–
28%
Yes 28%
No 72%
Leave DAL more than 15 minutes late?
Calm-weather odds: 27% · changed – in 24h
–
54%
Yes 54%
No 46%
Arrive at MDW more than an hour late?
Calm-weather odds: 3% · changed – in 24h
–
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
2%
Yes 2%
No 98%
How late will it get to MDW?
On time or early
71%
15–30 min late
11%
30 min–1 hour late
9%
1–2 hours late
4%
Over 2 hours late
3%
Cancelled
2%
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
↑
This flight has been late 22% of the time recently
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at MDW
↓
DAL is quiet at that time
Weather at each end
DAL (origin)
Gusts 14 kt Ceiling 500 ft Visibility 4 mi Precip 0.36 in
MDW (destination)
Gusts 8 kt Ceiling none (clear) Visibility 10+ 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.