Schedule: the flights that flew on Monday, Nov 2, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3309
SCHEDULED · TYPICAL SCHEDULE
Monday, November 9 Tomorrow
WN 3309 · ONT → LAS
departs 8:40 PM PT · arrives 9:51 PM PT
Forecast issued Sun 4:00 PM ET · 32h before departure
Watch this flight
Other days
Today 27%
Mon 11/9
Thu 11/12 39%
Fri 11/13 43%
Odds over time
Arrive at LAS more than 15 minutes late?
29%
chance · ±4 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
29%
Leave 15+ late
37%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
7.0d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 30% · changed −1 pt in 24h
−1 pt
29%
Yes 29%
No 71%
Leave ONT more than 15 minutes late?
Calm-weather odds: 35% · changed +2 pts in 24h
+2 pts
37%
Yes 37%
No 63%
Arrive at LAS more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
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 LAS?
On time or early
71%
15–30 min late
17%
30 min–1 hour late
7%
1–2 hours late
3%
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
↑
WN's recent on-time record
↑
Arrivals into LAS at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at LAS
↓
Mondays in November are usually quieter than average
Weather at each end
ONT (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
LAS (destination)
Gusts 8 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.