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 4144
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 4144 · MDW → SEA
departs 9:50 PM CT · arrives 12:25 AM PT
Forecast issued Wed 7:00 PM ET · 4h before departure
Watch this flight
Other days
Today
Thu 10/1 39%
Fri 10/2 30%
Sat 10/3 26%
Mon 10/5 30%
Tue 10/6 29%
Odds over time
Arrive at SEA more than 15 minutes late?
67%
chance · ±0 pts
+32 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
67%
Leave 15+ late
76%
Arrive 1h+ late
24%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.7d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 37% · changed +32 pts in 24h
+32 pts
67%
Yes 67%
No 33%
Leave MDW more than 15 minutes late?
Calm-weather odds: 59% · changed +19 pts in 24h
+19 pts
76%
Yes 76%
No 24%
Arrive at SEA more than an hour late?
Calm-weather odds: 9% · changed +15 pts in 24h
+15 pts
24%
Yes 24%
No 76%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
<1%
Yes <1%
No 100%
How late will it get to SEA?
On time or early
33%
15–30 min late
44%
30 min–1 hour late
0%
1–2 hours late
22%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
9pm departures from MDW are often late
↑
This flight has been late 37% of the time recently
↑
WN's recent on-time record
↓
Wednesdays in September are usually quieter than average
↓
Cloud base down to 1,300 ft forecast at SEA that day
Weather at each end
MDW (origin)
Gusts 21 kt Ceiling 700 ft Visibility 2.5 mi Precip 0.94 in
SEA (destination)
Gusts 9 kt Ceiling 1,300 ft 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.