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 3766
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 3766 · RDU → MDW
departs 7:20 PM ET · arrives 8:20 PM CT
Forecast issued Fri 2:00 PM ET · 53h before departure
Watch this flight
Other days
Today 55%
Sun 10/4
Mon 10/5 22%
Wed 10/7 16%
Odds over time
Arrive at MDW more than 15 minutes late?
33%
chance · ±3 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
35%
Arrive 1h+ late
7%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.9d
Now
1d
12h
6h
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 24% · changed – in 24h
–
33%
Yes 33%
No 67%
Leave RDU more than 15 minutes late?
Calm-weather odds: 24% · changed – in 24h
–
35%
Yes 35%
No 65%
Arrive at MDW more than an hour late?
Calm-weather odds: 4% · changed – in 24h
–
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
1%
Yes 1%
No 99%
How late will it get to MDW?
On time or early
66%
15–30 min late
12%
30 min–1 hour late
13%
1–2 hours late
5%
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 200 ft, visibility down to 1 mi, 1.3 in of rain forecast at RDU that day
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into MDW at that hour are often late
↓
Mostly benign weather forecast at MDW
↓
RDU usually runs smoothly
Weather at each end
RDU (origin)
Gusts 8 kt Ceiling 200 ft Visibility 1 mi Precip 1.31 in
MDW (destination)
Gusts 11 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.