Schedule: the flights that flew on Sunday, Oct 25, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1341
SCHEDULED · TYPICAL SCHEDULE
Sunday, November 1
WN 1341 · SJC → ONT
departs 3:21 PM PT · arrives 4:49 PM PT
Forecast issued Fri 6:00 PM ET · 49h before departure
Watch this flight
Odds over time
Arrive at ONT more than 15 minutes late?
31%
chance · ±2 pts
+4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
31%
Leave 15+ late
42%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.8d
Now
1d
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 26% · changed +4 pts in 24h
+4 pts
31%
Yes 31%
No 69%
Leave SJC more than 15 minutes late?
Calm-weather odds: 39% · changed +0 pts in 24h
+0 pts
42%
Yes 42%
No 58%
Arrive at ONT more than an hour late?
Calm-weather odds: 8% · changed +0 pts in 24h
+0 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
68%
15–30 min late
12%
30 min–1 hour late
11%
1–2 hours late
6%
Over 2 hours late
3%
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
↑
Later flights pick up delays from earlier in the day
↑
0.3 in of rain forecast at ONT that day
↓
Mostly benign weather forecast at SJC
↓
Sundays in November are usually quieter than average
Weather at each end
SJC (origin)
Gusts 15 kt Ceiling 3,600 ft Visibility 10+ mi Precip 0.02 in
ONT (destination)
Gusts 15 kt Ceiling 1,500 ft Visibility 3 mi Precip 0.32 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.