Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3144
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 3144 · ONT → DEN
departs 5:50 AM PT · arrives 9:05 AM MT
Forecast issued Fri 10:00 PM ET · 13h after departure
Watch this flight
Other days
Fri 10/2
Today 5%
Mon 10/5 4%
Fri 10/9 5%
Odds over time
Arrive at DEN more than 15 minutes late?
4%
chance · ±0 pts
−3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
4%
Leave 15+ late
3%
Arrive 1h+ late
<1%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
3.5d
2d
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 4% · changed −3 pts in 24h
−3 pts
4%
Yes 4%
No 96%
Leave ONT more than 15 minutes late?
Calm-weather odds: 3% · changed −3 pts in 24h
−3 pts
3%
Yes 3%
No 97%
Arrive at DEN more than an hour late?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
<1%
Yes <1%
No 99%
Cancelled?
Calm-weather odds: <1% · changed −4 pts in 24h
−4 pts
<1%
Yes <1%
No 100%
How late will it get to DEN?
On time or early
95%
15–30 min late
2%
30 min–1 hour late
1%
1–2 hours late
<1%
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
↑
DEN is busy at that time
↓
Early flights usually leave on time
↓
5am departures from ONT are usually not late
Weather at each end
ONT (origin)
Gusts 11 kt Ceiling none (clear) Visibility 8 mi Precip none
DEN (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.