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 4088
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 4088 · MDW → CLE
departs 1:40 PM CT · arrives 3:50 PM ET
Forecast issued Wed 10:00 PM ET · 7h after departure
Watch this flight
Other days
Wed 9/30
Today 16%
Fri 10/2 8%
Sat 10/3 4%
Sun 10/4 6%
Mon 10/5 6%
Tue 10/6 13%
Odds over time
Arrive at CLE more than 15 minutes late?
33%
chance · ±0 pts
−1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
43%
Arrive 1h+ late
11%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at CLE more than 15 minutes late?
Calm-weather odds: 33% · changed −1 pt in 24h
−1 pt
33%
Yes 33%
No 67%
Leave MDW more than 15 minutes late?
Calm-weather odds: 43% · changed +1 pt in 24h
+1 pt
43%
Yes 43%
No 57%
Arrive at CLE more than an hour late?
Calm-weather odds: 11% · changed +1 pt in 24h
+1 pt
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to CLE?
On time or early
65%
15–30 min late
15%
30 min–1 hour late
6%
1–2 hours late
8%
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 800 ft, visibility down to 2.5 mi, 0.8 in of rain forecast at MDW that day
↑
1pm departures from MDW are often late
↑
WN's recent on-time record
↓
Wednesdays in September are usually quieter than average
↓
CLE usually runs smoothly
Weather at each end
MDW (origin)
Gusts 21 kt Ceiling 700 ft Visibility 2.5 mi Precip 0.94 in
CLE (destination)
Gusts 11 kt Ceiling 9,600 ft Visibility 8 mi Precip 0.07 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.