Schedule: a typical summer Friday (the flights of Jul 31, 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
Friday, October 2 Today
WN 3609 · SDF → MDW
departs 8:45 AM ET · arrives 9:00 AM CT
Forecast issued Fri 4:00 PM ET · 7h after departure
Watch this flight
Other days
Today
Sun 10/4 6%
Mon 10/5 6%
Odds over time
Arrive at MDW more than 15 minutes late?
7%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
7%
Leave 15+ late
6%
Arrive 1h+ late
2%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.4d
2d
1d
12h
6h
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
7%
Yes 7%
No 93%
Leave SDF more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Arrive at MDW more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
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
92%
15–30 min late
3%
30 min–1 hour late
3%
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 600 ft, visibility down to 2 mi, 1.5 in of rain forecast at SDF that day
↓
8am departures from SDF are usually not late
↓
Arrivals into MDW at that hour are usually not late
Weather at each end
SDF (origin)
Gusts 19 kt Ceiling 800 ft Visibility 4 mi Precip 0.24 in
MDW (destination)
Gusts 15 kt Ceiling 1,500 ft Visibility 7 mi Precip 0.12 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.