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 2520
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 2520 · MEM → MDW
departs 5:10 AM CT · arrives 6:45 AM CT
Forecast issued Fri 1:00 PM ET · 41h before departure
Watch this flight
Odds over time
Arrive at MDW more than 15 minutes late?
6%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
6%
Leave 15+ late
5%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
5.3d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 5% · changed −1 pt in 24h
−1 pt
6%
Yes 6%
No 94%
Leave MEM more than 15 minutes late?
Calm-weather odds: 4% · changed −1 pt in 24h
−1 pt
5%
Yes 5%
No 95%
Arrive at MDW more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
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
93%
15–30 min late
3%
30 min–1 hour late
<1%
1–2 hours late
2%
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 400 ft forecast at MEM that day
↑
MEM is prone to delays
↑
Other factors
↓
Early flights usually leave on time
↓
5am departures from MEM are usually not late
Weather at each end
MEM (origin)
Gusts 17 kt Ceiling 200 ft Visibility 8 mi Precip 0.09 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.