Schedule: the flights that flew on Tuesday, Oct 6, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3677
SCHEDULED · TYPICAL SCHEDULE
Tuesday, October 13
WN 3677 · SAN → SFO
departs 1:38 PM PT · arrives 3:12 PM PT
Forecast issued Sun 11:00 PM ET · 42h before departure
Watch this flight
Other days
Today 33%
Tue 10/13
Wed 10/14 39%
Thu 10/15 41%
Fri 10/16 43%
Sun 10/18 39%
Odds over time
Arrive at SFO more than 15 minutes late?
33%
chance · ±3 pts
+5 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
28%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.7d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 23% · changed +5 pts in 24h
+5 pts
33%
Yes 33%
No 67%
Leave SAN more than 15 minutes late?
Calm-weather odds: 27% · changed +0 pts in 24h
+0 pts
28%
Yes 28%
No 72%
Arrive at SFO more than an hour late?
Calm-weather odds: 6% · changed +3 pts in 24h
+3 pts
9%
Yes 9%
No 91%
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
67%
15–30 min late
14%
30 min–1 hour late
10%
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 33% of the time recently
↑
Arrivals into SFO at that hour are often late
↑
1pm departures from SAN are often late
↓
Tuesdays in October are usually quieter than average
↓
Mostly benign weather forecast at SFO
Weather at each end
SAN (origin)
Gusts 13 kt Ceiling 4,400 ft Visibility 10+ mi Precip 0.03 in
SFO (destination)
Gusts 20 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.