Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1677
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 1677 · SAN → SFO
departs 11:15 AM PT · arrives 1:00 PM PT
Forecast issued Thu 10:00 PM ET · 8h after departure
Watch this flight
Other days
Thu 10/1
Mon 10/5 24%
Fri 10/9 33%
Odds over time
Arrive at SFO more than 15 minutes late?
42%
chance · ±0 pts
−8 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
42%
Leave 15+ late
42%
Arrive 1h+ late
14%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 42% · changed −8 pts in 24h
−8 pts
42%
Yes 42%
No 58%
Leave SAN more than 15 minutes late?
Calm-weather odds: 42% · changed −3 pts in 24h
−3 pts
42%
Yes 42%
No 58%
Arrive at SFO more than an hour late?
Calm-weather odds: 14% · changed −3 pts in 24h
−3 pts
14%
Yes 14%
No 86%
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
57%
15–30 min late
13%
30 min–1 hour late
15%
1–2 hours late
9%
Over 2 hours late
4%
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 37% of the time recently
↑
Arrivals into SFO at that hour are often late
↑
11am departures from SAN are often late
↓
Mostly benign weather forecast at SFO
↓
Other factors
Weather at each end
SAN (origin)
Gusts 19 kt Ceiling 500 ft Visibility 4 mi Precip none
SFO (destination)
Gusts 24 kt Ceiling 500 ft Visibility 6 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.