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 4219
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
WN 4219 · LGB → DEN
departs 8:00 AM PT · arrives 11:15 AM MT
Forecast issued Sun 7:00 AM ET · 4h before departure
Watch this flight
Odds over time
Arrive at DEN more than 15 minutes late?
10%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
10%
Leave 15+ late
6%
Arrive 1h+ late
2%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
5.5d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 6% · changed +2 pts in 24h
+2 pts
10%
Yes 10%
No 90%
Leave LGB more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Arrive at DEN more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to DEN?
On time or early
90%
15–30 min late
5%
30 min–1 hour late
4%
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
↓
8am departures from LGB are usually not late
Weather at each end
LGB (origin)
Gusts 12 kt Ceiling none (clear) Visibility 10+ mi Precip none
DEN (destination)
Gusts 25 kt Ceiling 7,500 ft 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.