Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3673
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 3673 · SJC → HOU
departs 9:20 AM PT · arrives 3:10 PM CT
Forecast issued Fri 10:00 PM ET · 10h after departure
Watch this flight
Other days
Fri 10/2
Today 16%
Mon 10/5 14%
Fri 10/9 13%
Odds over time
Arrive at HOU more than 15 minutes late?
16%
chance · ±0 pts
−5 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
16%
Leave 15+ late
11%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.6d
2d
1d
12h
6h
Departs
Lands
Arrive at HOU more than 15 minutes late?
Calm-weather odds: 16% · changed −5 pts in 24h
−5 pts
16%
Yes 16%
No 84%
Leave SJC more than 15 minutes late?
Calm-weather odds: 11% · changed −3 pts in 24h
−3 pts
11%
Yes 11%
No 89%
Arrive at HOU more than an hour late?
Calm-weather odds: 4% · changed −2 pts in 24h
−2 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 HOU?
On time or early
84%
15–30 min late
6%
30 min–1 hour late
6%
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
↑
Visibility down to 1.25 mi, 0.6 in of rain forecast at HOU that day
↑
Arrivals into HOU at that hour are often late
↑
HOU is prone to delays
↓
9am departures from SJC are usually not late
↓
Cloud base down to 700 ft forecast at SJC that day
Weather at each end
SJC (origin)
Gusts 5 kt Ceiling 700 ft Visibility 4 mi Precip none
HOU (destination)
Gusts 17 kt Ceiling 1,800 ft Visibility 1.25 mi Precip 0.41 in
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.