Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4399
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Yesterday
WN 4399 · DAL → LBB
departs 8:40 AM CT · arrives 9:50 AM CT
Forecast issued Thu 10:00 PM ET · 12h after departure
Watch this flight
Other days
Thu 10/1
Today 33%
Sun 10/4 15%
Mon 10/5 9%
Tue 10/6 8%
Wed 10/7 8%
Odds over time
Arrive at LBB more than 15 minutes late?
45%
chance · ±0 pts
−15 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
45%
Leave 15+ late
24%
Arrive 1h+ late
12%
Cancelled
7%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at LBB more than 15 minutes late?
Calm-weather odds: 45% · changed −15 pts in 24h
−15 pts
45%
Yes 45%
No 55%
Leave DAL more than 15 minutes late?
Calm-weather odds: 24% · changed −29 pts in 24h
−29 pts
24%
Yes 24%
No 76%
Arrive at LBB more than an hour late?
Calm-weather odds: 12% · changed −18 pts in 24h
−18 pts
12%
Yes 12%
No 88%
Cancelled?
Calm-weather odds: 7% · changed −1 pt in 24h
−1 pt
7%
Yes 7%
No 93%
How late will it get to LBB?
On time or early
51%
15–30 min late
17%
30 min–1 hour late
13%
1–2 hours late
6%
Over 2 hours late
5%
Cancelled
7%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,167 ft, visibility down to 2 mi, 1.8 in of rain, thunderstorms forecast at DAL that day
↑
DAL is prone to delays
↑
Other factors
↓
Early flights usually leave on time
↓
Arrivals into LBB at that hour are usually not late
Weather at each end
DAL (origin)
Gusts 22 kt Ceiling 500 ft Visibility 1.25 mi Precip 3.06 in
LBB (destination)
Gusts 23 kt Ceiling 5,500 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.