Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3121
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Today
WN 3121 · OKC → MDW
departs 5:00 AM CT · arrives 6:55 AM CT
Forecast issued Sat 3:00 AM ET · 3h before departure
Watch this flight
Other days
Today
Sun 10/4 4%
Mon 10/5 4%
Fri 10/9 4%
Odds over time
Arrive at MDW more than 15 minutes late?
5%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
5%
Leave 15+ late
5%
Arrive 1h+ late
1%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.3d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at MDW more than 15 minutes late?
Calm-weather odds: 5% · changed +2 pts in 24h
+2 pts
5%
Yes 5%
No 95%
Leave OKC more than 15 minutes late?
Calm-weather odds: 3% · 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
1%
Yes 1%
No 99%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to MDW?
On time or early
95%
15–30 min late
3%
30 min–1 hour late
<1%
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
↑
Other factors
↓
Early flights usually leave on time
↓
5am departures from OKC are usually not late
Weather at each end
OKC (origin)
Gusts 10 kt Ceiling 1,500 ft Visibility 9 mi Precip none
MDW (destination)
Gusts 8 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.