Schedule: the flights that flew on Saturday, Nov 7, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4740
SCHEDULED · TYPICAL SCHEDULE
Saturday, November 14 Tomorrow
WN 4740 · DEN → ONT
departs 7:37 PM MT · arrives 8:56 PM PT
Forecast issued Fri 5:00 PM ET · 29h before departure
Watch this flight
Other days
Today 69%
Sat 11/14
Sun 11/15 39%
Mon 11/16 36%
Thu 11/19 45%
Odds over time
Arrive at ONT more than 15 minutes late?
46%
chance · ±8 pts
−8 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
46%
Leave 15+ late
39%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.9d
2d
Now
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 32% · changed −8 pts in 24h
−8 pts
46%
Yes 46%
No 54%
Leave DEN more than 15 minutes late?
Calm-weather odds: 31% · changed −11 pts in 24h
−11 pts
39%
Yes 39%
No 61%
Arrive at ONT more than an hour late?
Calm-weather odds: 5% · changed −6 pts in 24h
−6 pts
9%
Yes 9%
No 91%
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
54%
15–30 min late
25%
30 min–1 hour late
12%
1–2 hours late
7%
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
↑
7pm departures from DEN are often late
↑
WN's recent on-time record
↑
Later flights pick up delays from earlier in the day
↓
Saturdays in November are usually quieter than average
↓
DEN usually runs smoothly
Weather at each end
DEN (origin)
Gusts 13 kt Ceiling 200 ft Visibility 0.3 mi Precip none
ONT (destination)
Gusts 13 kt Ceiling 2,700 ft Visibility 7 mi Precip 0.08 in
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.