Schedule: the flights that flew on Friday, Oct 23, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 553
SCHEDULED · TYPICAL SCHEDULE
Friday, October 30
WN 553 · AUS → ONT
departs 11:41 AM CT · arrives 12:48 PM PT
Forecast issued Wed 7:00 PM ET · 42h before departure
Watch this flight
Other days
Thu 10/29 22%
Fri 10/30
Mon 11/2 23%
Odds over time
Arrive at ONT more than 15 minutes late?
22%
chance · ±3 pts
+7 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
22%
Leave 15+ late
22%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.5d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 14% · changed +7 pts in 24h
+7 pts
22%
Yes 22%
No 78%
Leave AUS more than 15 minutes late?
Calm-weather odds: 22% · changed +0 pts in 24h
+0 pts
22%
Yes 22%
No 78%
Arrive at ONT more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
4%
Yes 4%
No 96%
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
78%
15–30 min late
11%
30 min–1 hour late
7%
1–2 hours late
3%
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
↑
This flight has been late 43% of the time recently
↑
Cloud base down to 700 ft forecast at AUS that day
↑
WN's recent on-time record
↓
Arrivals into ONT at that hour are usually not late
↓
Mostly benign weather forecast at ONT
Weather at each end
AUS (origin)
Gusts 14 kt Ceiling 467 ft Visibility 3.66667 mi Precip 0.07 in
ONT (destination)
Gusts 14 kt Ceiling 4,100 ft Visibility 5 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.