Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 5081
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
WN 5081 · LAS → ONT
departs 5:15 PM PT · arrives 6:20 PM PT
Forecast issued Sun 12:00 PM ET · 8h before departure
Watch this flight
Odds over time
Arrive at ONT more than 15 minutes late?
38%
chance · ±0 pts
−4 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
38%
Leave 15+ late
48%
Arrive 1h+ late
11%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
5.9d
2d
1d
12h
Now
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 40% · changed −4 pts in 24h
−4 pts
38%
Yes 38%
No 62%
Leave LAS more than 15 minutes late?
Calm-weather odds: 43% · changed +2 pts in 24h
+2 pts
48%
Yes 48%
No 52%
Arrive at ONT more than an hour late?
Calm-weather odds: 8% · changed +2 pts in 24h
+2 pts
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to ONT?
On time or early
62%
15–30 min late
7%
30 min–1 hour late
19%
1–2 hours late
8%
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
↑
5pm departures from LAS are often late
↑
LAS is prone to delays
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at LAS
↓
Mostly benign weather forecast at ONT
Weather at each end
LAS (origin)
Gusts 12 kt Ceiling none (clear) Visibility 10+ mi Precip none
ONT (destination)
Gusts 17 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.