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 4576
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 4576 · DAL → LGB
departs 8:00 PM CT · arrives 9:10 PM PT
Forecast issued Fri 2:00 PM ET · 55h before departure
Watch this flight
Other days
Sun 10/4
Wed 10/7 23%
Odds over time
Arrive at LGB more than 15 minutes late?
37%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
37%
Leave 15+ late
44%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.0d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at LGB more than 15 minutes late?
Calm-weather odds: 28% · changed – in 24h
–
37%
Yes 37%
No 63%
Leave DAL more than 15 minutes late?
Calm-weather odds: 38% · changed – in 24h
–
44%
Yes 44%
No 56%
Arrive at LGB more than an hour late?
Calm-weather odds: 6% · changed – in 24h
–
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to LGB?
On time or early
63%
15–30 min late
19%
30 min–1 hour late
9%
1–2 hours late
7%
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
↑
Later flights pick up delays from earlier in the day
↑
8pm departures from DAL are often late
↑
DAL is prone to delays
↓
Mostly benign weather forecast at LGB
↓
LGB usually runs smoothly
Weather at each end
DAL (origin)
Gusts 18 kt Ceiling 1,033 ft Visibility 7 mi Precip 0.07 in
LGB (destination)
Gusts 12 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.