Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3609
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Yesterday
WN 3609 · SDF → MDW
departs 8:45 AM ET · arrives 9:00 AM CT
Forecast issued Thu 10:00 PM ET · 13h after departure
Watch this flight
Other days
Thu 10/1
Today 7%
Sun 10/4 6%
Mon 10/5 6%
Odds over time
Arrive at MDW more than 15 minutes late?
9%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
9%
Leave 15+ late
5%
Arrive 1h+ late
2%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Leave SDF more than 15 minutes late?
Calm-weather odds: 5% · changed −3 pts in 24h
−3 pts
5%
Yes 5%
No 95%
Arrive at MDW more than an hour late?
Calm-weather odds: 2% · changed −1 pt in 24h
−1 pt
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to MDW?
On time or early
90%
15–30 min late
4%
30 min–1 hour late
4%
1–2 hours late
<1%
Over 2 hours late
<1%
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, visibility down to 2 mi, 0.8 in of rain forecast at MDW that day
↑
Other factors
↑
MDW is busy at that time
↓
Early flights usually leave on time
↓
8am departures from SDF are usually not late
Weather at each end
SDF (origin)
Gusts 20 kt Ceiling none (clear) Visibility 10+ mi Precip none
MDW (destination)
Gusts 21 kt Ceiling 700 ft Visibility 1.25 mi Precip 1.18 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.