Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4166
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
WN 4166 · SAN → OAK
departs 9:50 AM PT · arrives 11:25 AM PT
Forecast issued Sun 7:00 AM ET · 30h before departure
Watch this flight
Other days
Mon 10/5
Fri 10/9 13%
Odds over time
Arrive at OAK more than 15 minutes late?
9%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
9%
Leave 15+ late
11%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.5d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at OAK more than 15 minutes late?
Calm-weather odds: 10% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Leave SAN more than 15 minutes late?
Calm-weather odds: 12% · changed +0 pts in 24h
+0 pts
11%
Yes 11%
No 89%
Arrive at OAK more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to OAK?
On time or early
90%
15–30 min late
4%
30 min–1 hour late
3%
1–2 hours late
2%
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
↑
9am departures from SAN are often late
↑
SAN is prone to delays
↑
This flight has been late 20% of the time recently
↓
Mostly benign weather forecast at SAN
↓
Mostly benign weather forecast at OAK
Weather at each end
SAN (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
OAK (destination)
Gusts 11 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.