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 2427
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 2427 · LAX → SFO
departs 10:45 AM PT · arrives 12:00 PM PT
Forecast issued Fri 6:00 PM ET · 44h before departure
Watch this flight
Other days
Today 41%
Sat 10/3 20%
Sun 10/4
Mon 10/5 31%
Odds over time
Arrive at SFO more than 15 minutes late?
31%
chance · ±5 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
31%
Leave 15+ late
31%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.7d
Now
1d
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 27% · changed +2 pts in 24h
+2 pts
31%
Yes 31%
No 69%
Leave LAX more than 15 minutes late?
Calm-weather odds: 31% · changed +2 pts in 24h
+2 pts
31%
Yes 31%
No 69%
Arrive at SFO more than an hour late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SFO?
On time or early
68%
15–30 min late
10%
30 min–1 hour late
12%
1–2 hours late
7%
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
↑
This flight has been late 60% of the time recently
↑
Arrivals into SFO at that hour are often late
↑
10am departures from LAX are often late
↓
Mostly benign weather forecast at SFO
↓
Early flights usually leave on time
Weather at each end
LAX (origin)
Gusts 12 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFO (destination)
Gusts 13 kt Ceiling none (clear) Visibility 8 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.