Schedule: the flights that flew on Monday, Oct 26, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4175
SCHEDULED · TYPICAL SCHEDULE
Monday, November 2
WN 4175 · SAN → SFO
departs 8:30 PM PT · arrives 10:07 PM PT
Forecast issued Sat 8:00 AM ET · 64h before departure
Watch this flight
Other days
Mon 11/2
Tue 11/3 39%
Wed 11/4 50%
Thu 11/5 66%
Fri 11/6 54%
Odds over time
Arrive at SFO more than 15 minutes late?
31%
chance · ±7 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
31%
Leave 15+ late
35%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
7.0d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 29% · changed – in 24h
–
31%
Yes 31%
No 69%
Leave SAN more than 15 minutes late?
Calm-weather odds: 37% · changed – in 24h
–
35%
Yes 35%
No 65%
Arrive at SFO more than an hour late?
Calm-weather odds: 9% · changed – in 24h
–
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SFO?
On time or early
68%
15–30 min late
9%
30 min–1 hour late
12%
1–2 hours late
7%
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
↑
WN's recent on-time record
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 44% of the time recently
↓
Mostly benign weather forecast at SFO
↓
Mondays in November are usually quieter than average
Weather at each end
SAN (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFO (destination)
Gusts 7 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.