Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3976
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3976 · LGA → MDW
departs 10:55 AM ET · arrives 12:15 PM CT
Forecast issued Wed 3:00 PM ET · 4h after departure
Watch this flight
Other days
Today
Tue 10/6 19%
Odds over time
Arrive at MDW more than 15 minutes late?
39%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
39%
Leave 15+ late
28%
Arrive 1h+ late
7%
Cancelled
4%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 39% · changed +2 pts in 24h
+2 pts
39%
Yes 39%
No 61%
Leave LGA more than 15 minutes late?
Calm-weather odds: 28% · changed +6 pts in 24h
+6 pts
28%
Yes 28%
No 72%
Arrive at MDW more than an hour late?
Calm-weather odds: 6% · changed +2 pts in 24h
+2 pts
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: 4% · changed +2 pts in 24h
+2 pts
4%
Yes 4%
No 96%
How late will it get to MDW?
On time or early
58%
15–30 min late
20%
30 min–1 hour late
10%
1–2 hours late
5%
Over 2 hours late
2%
Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,000 ft, visibility down to 2.5 mi, 1.1 in of rain forecast at MDW that day
↑
10am departures from LGA are often late
↑
LGA is prone to delays
↓
Mostly benign weather forecast at LGA
↓
Wednesdays in September are usually quieter than average
Weather at each end
LGA (origin)
Gusts 9 kt Ceiling 2,700 ft Visibility 10+ mi Precip none
MDW (destination)
Gusts 17 kt Ceiling 1,000 ft Visibility 2.5 mi Precip 1.09 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.