Schedule: the flights that flew on Monday, Oct 26, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4570
SCHEDULED · TYPICAL SCHEDULE
Monday, November 2 Tomorrow
WN 4570 · LAS → ONT
departs 10:51 PM PT · arrives 12:02 AM PT
Forecast issued Sun 4:00 AM ET · 46h before departure
Watch this flight
Other days
Mon 11/2
Thu 11/5 36%
Fri 11/6 44%
Odds over time
Arrive at ONT more than 15 minutes late?
27%
chance · ±5 pts
−2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
42%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
7.1d
Now
1d
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 27% · changed −2 pts in 24h
−2 pts
27%
Yes 27%
No 73%
Leave LAS more than 15 minutes late?
Calm-weather odds: 43% · changed −2 pts in 24h
−2 pts
42%
Yes 42%
No 58%
Arrive at ONT more than an hour late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to ONT?
On time or early
72%
15–30 min late
11%
30 min–1 hour late
10%
1–2 hours late
4%
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
↑
WN's recent on-time record
↑
10pm departures from LAS are often late
↑
LAS is prone to delays
↓
Mostly benign weather forecast at LAS
↓
Mondays in November are usually quieter than average
Weather at each end
LAS (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
ONT (destination)
Gusts 11 kt Ceiling none (clear) Visibility 9 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.